Electric Controller & Mfg. (EC&M) DC Magnetic Drum Brake - Class 5010-22, 8 to 23in Type F Guide d'installation

5010-22

1/01

Columbia, SC, USA

Drum Brakes Class 5010, Type F

8-Inch WB Brake, Series A

10-, 13-, 16-, 19-, and 23-Inch WB Brakes, Series C

Frenos de tambor clase 5010,

tipo F

Freno WB de 203 mm, serie A

Frenos WB de 254, 330, 406, 483 y 584 mm,

serie C

Freins à tambour de classe 5010,

type F

Frein WB de 203 mm, série A

Freins WB de 254, 330 , 406, 483 et 584 mm, série C

Instruction Boletín de Directives

Bulletin instrucciones d'utilisation

Retain for future use. / Conservar para uso futuro. / À conserver pour

usage ultérieur.

5010-22 Drum Brakes Class 5010, Type F

1/01 Introduction

3

ENGLISH

The Class 5010 WB brake is a spring-set, electrically released, shoe-type

friction brake. It is designed to meet AISE Standard No. 11 and NEMA

Standard ICS 9 Part 1 for torque rating, wheel diameter, mounting

dimensions, and electrical operating characteristics.

Table 1 shows the maximum brake torque ratings. The torque setting for the

standard brake can be adjusted down to 50% of the maximum rating. A half-

torque spring is available which limits the maximum torque to 50% of the

ratings listed and provides adjustment down to 25% of the ratings listed.

The Class 5010 WB brake, when used with either AC or DC motors, provides

a fixed torque for holding or stopping the drive. The brake is supplied with

either a DC series-wound coil or a DC shunt-wound coil. Shunt-wound

brakes use a partial voltage coil and require connection of a shunt brake

resistor in series with the brake coil. AC applications require a rectifier control

panel (refer to bulletin 5010-16 for details).

DC series-wound coils are designed to release the brake at 40% of rated

motor current and to hold the brake released at 10% of rated motor current.

DC shunt-wound coils are designed to release the brake at 80% of rated

voltage and operate continuously at 110% of rated voltage. For application

information see Tables 2–4.

Table 1: Maximum Brake Torque Rating (lb-ft.)

Brake

Size

(in.)

Series-Wound Brakes Shunt-Wound Brakes

1/2-Hour

Rating

1-Hour

Rating

1-Hour

Rating

8-Hour

Rating

High-Speed and

Rectifier Operated

8 100 65 100 75 100

10 200 130 200 150 200

13 550 365 550 400 550

16 1000 650 1000 750 1000

19 2000 1300 2000 1500 2000

23 4000 2600 4000 3000 4000

INTRODUCTION

HAZARDOUS VOLTAGE

Disconnect all power before servicing this equipment.

Failure to follow this instruction will result in death, serious injury,

or equipment damage.

DANGER

STORED ENERGY HAZARD

• The torque spring is under compression.

• Perform the disassembly and assembly steps in the exact order listed.

Failure to follow these instructions can result in death or serious

injury.

WARNING

SPECIFICATIONS

Drum Brakes Class 5010, Type F 5010-22

Specifications 1/01

4

ENGLISH

Table 2: Application Table for Shunt Brake Coils

Brake Coil

Resistance

@ 20 °C

(Ω)

DC Voltage

Rating (Vdc) Shunt Brake Resistors and Relay for 230 Vdc

1 Hour 8 Hour

1-Hour

Service

Resistor

8-Hour

Service

Resistor

High-Speed

Service

Resistor

High-Speed

Service

Relay

F-0857 50903-132-67 45.0 121 87 Class 5010,

Type RO-125

(50 Ω, 400 W)

Class 5010,

Type RO-126

(100 Ω, 400 W)

Class 5010,

Type RO-127

(400 Ω, 400 W)

Class 7001,

Type KFO-01,

Form F08

F-1077 50904-224-75 64.3 181 119 Class 5010,

Type RO-105

(17.5 Ω, 400 W)

Class 5010,

Type RO-128

(60 Ω, 400 W)

Class 5010,

Type RO-119

(225 Ω, 600 W)

Class 7001,

Type KFO-01,

Form F10

F-1375 50905-224-76 43.2 163 111

Class 5010,

Type RO-106

(20 Ω, 800 W)

Class 5010,

Type RO-111

(45 Ω, 600 W)

Class 5010,

Type RO-148

(150 Ω, 400 W)

Class 7001,

Type KFO-01,

Form F13

F-1674 50906-224-75 23.7 135 94 Class 5010,

Type RO-106

(20 Ω, 800 W)

Class 5010,

Type RO-109

(35 Ω, 800 W)

Class 5010,

Type RO-126

(100 Ω, 400 W)

Class 7001,

Type KFO-01,

Form F16

F-1959 50907-132-68 27.36 169 114

Class 5010,

Type RO-132,

(12.5 Ω, 400 W)

Class 5010,

Type RO-146

(40 Ω, 800 W)

Class 5010,

Type RO-148

(150 Ω, 400 W)

Class 7001,

Type KFO-01,

Form F19

F-2374 50908-251-66 15.1 149 92 Class 5010,

Type RO-136

(10 Ω, 1200 W)

Class 5010,

Type RO-138

(30 Ω, 1200 W)

C lass 5010,

Type RO-116

(100 Ω, 800 W)

Class 7001,

Type KFO-01,

Form F23

Table 3: Application Table for Rectifier-Operated Brake Coils

Brake

Size

(inches)

Brake Coil

Resistance

@ 20 °C

(Ω)

DC Voltage Rating (Vdc)

Rectifier-Operated Application

1 Hour 8 Hour

8F-0853 50903-132-63 7.30 49 35 Single brake coil

F-0851 50903-132-61 2.90 31 22 Two brake coils connected in series

10 F-1072 50904-224-70 6.32 56 37 Single brake coil

F-1070 50904-224-68 2.56 36 24 Two brake coils connected in series

13 F-1370 50905-224-71 4.28 51 35 Single brake coil

F-1385 50905-224-69 1.69 32 22 Two brake coils connected in series

16 F-1670 50906-224-71 3.73 53 37 Single brake coil

F-1686 50906-224-68 0.93 26.8 18.6 Two brake coils connected in series

19 F-1954 50907-132-63 2.83 54.6 36.7 Single brake coil

F-1951 50907-132-60 0.704 27.2 18.3 Two brake coils connected in series

23 F-2383 50908-251-62 2.38 59 36 Single brake coil

F-2384 50908-251-59 0.592 30 18 Two brake coils connected in series

5010-22 Drum Brakes Class 5010, Type F

1/01 Specifications

5

ENGLISH

Table 4: Application Table for Series Brake Coils

Brake

Size

(inches)

Brake Coil

Resistance

@ 20 °C

(Ω)

1/2-Hour Service @ 230 Vdc 1-Hour Service @ 230 Vdc

Ampere

Rating

Horsepower

Rating

Ampere

Rating

Horsepower

Rating

8

F-0809 50903-132-58 0.839 20.5 4.5 16.8 3.5

F-0808 50903-132-57 0.552 25.5 6.0 20.7 4.5

F-0807 50903-132-56 0.369 31.0 7.0 25.4 5.5

F-0806 50903-132-55 0.215 41.0 10.0 33.0 8.0

F-0805 50903-132-54 0.1304 52.5 13.0 42.5 10.5

F-0804 50903-132-53 0.0802 67.0 17.0 54.5 14.0

10

F-1030 50904-224-63 0.453 35.5 8.5 28.0 7.0

F-1027 50904-224-62 0.277 45.4 11.5 35.8 8.5

F-1026 50904-224-61 0.181 56.2 14.0 44.4 11.0

F-1029 50904-224-60 0.115 70.5 18.0 55.6 14.0

F-1025 50904-224-59 0.0713 89.5 23.0 70.6 18.0

F-1028 50904-224-64 0.688 28.8 7.0 22.7 5.0

F-1024 50904-224-58 0.0451 112 30 88.8 23.0

13

F-1326 50905-224-62 0.152 73 19.0 58 15.0

F-1325 50905-224-60 0.0603 115 30.5 93 24.0

F-1324 50905-224-59 0.0381 145 39.0 117 31.0

F-1323 50905-224-58 0.0238 184 49.5 148 40.0

F-1329 50905-224-57 0.01507 230 63.0 186 50.0

F-1321 50905-224-56 0.00943 292 80.0 235 64.0

16

F-1624 50906-224-59 0.033 176 47.0 137 36.0

F-1625 50906-224-58 0.021 222 60.0 173 46.0

F-1623 50906-224-57 0.013 281 77.0 219 59.0

F-1622 50906-224-56 0.0082 354 96.0 277 76.0

F-1621 50906-224-55 0.0051 448 122.0 350 95.0

19

F-1908 50907-132-54 0.0176 283 78.0 217 59.0

F-1907 50907-132-53 0.0107 363 97.0 278 76.0

F-1906 50907-131-56 0.00733 429 120.0 326 90.0

F-1905 50907-131-55 0.00431 560 155.0 426 116.0

F-1904 50907-131-54 0.00332 638 178.0 485 134.0

23

F-2326 50908-252-51 0.0119 379 102.0 299 80.0

F-2325 50908-252-52 0.0094 427 117.0 337 90.0

F-2324 50908-252-53 0.0051 577 160.0 456 127.0

F-2335 50908-252-56 0.0024 845 235.0 669 185.0

F-2322 50908-252-57 0.0013 1155 320.0 913 252.0

F-2321 50908-252-58 0.00098 1316 365.0 1041 290.0

F-2336 50908-252-54 0.0040 651 180.0 515 142.0

F-2323 50908-252-55 0.0031 745 206.0 589 162.0

Note: Contact your local Square D sales office for additional coils.

Drum Brakes Class 5010, Type F 5010-22

Installation 1/01

6

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Figure 1: Brake Installation

To locate parts during installation:

• See Figure 1 for parts identified by a letter, e.g., “(G)”

• See Tables 7 through 12 and Figures 6 through 11 for any parts not

referenced by letters.

1. Unpack the brake carefully. Remove the shipping strap securing the

inboard shoe levers to the magnet case.

2. Check nameplate data for correct equipment. Verify that the brake coil is

correct. Refer to Tables 2–4.

3. Verify that all parts are undamaged and secure.

4. Check that the brake wheel size and dimensions are correct (part number

is stamped on the face of the hub).

5. Check that the brake has been manually released by removing the cotter

pin (G) from the manual release nut (F) and tightening the manual release

nut until the armature is completely closed.

6. Mount the brake wheel (R) on the motor shaft and slide the brake into

position, using the lifting ears (Y) on the magnet case. Center the brake

wheel (R) between the shoes (L).

7. If machinery interference prevents the brake from sliding over the end of

the wheel, the brake can be disassembled and moved into position.

a. If the brake is equipped with a self-adjusting shoe mechanism,

disconnect the self-adjusting connecting rod from the crank assembly by

removing the screw, washers, and nut.

b. Relieve compression in the torque spring (D). See “Relieving Torque

Spring Compression” on page 7.

c. Slide the brake into position, using the lifting ears (Y) on the magnet case.

Center the brake wheel (R) between the shoes (L).

d. Tighten the manual release nut (F) against the yoke (E) and

simultaneously lower the overlever assembly (DD). Verify that the flange

on the manual release nut passes through the hole in the yoke and that

the torque spring (D) is seated on the yoke, allowing the overlever

assembly to pass.

e. Replace the connecting rod spring (H). Swing the outboard shoe lever (K)

into position. Replace the stop nut (J).

INSTALLATION

CAUTION

LIFTING HAZARD

Use lifting ears. Do not lift the brake by the

overlever assembly.

Failure to follow this instruction can result

in serious injury or equipment damage.

INSTALLATION HAZARD

Disconnect the self-adjusting connecting rod

from the crank assembly before relieving

compression in the torque spring.

Failure to follow this instruction can result

in equipment damage.

CAUTION

5010-22 Drum Brakes Class 5010, Type F

1/01 Installation

7

ENGLISH

f. If the brake is equipped with a self-adjusting mechanism, reconnect the

self-adjusting connecting rod to the crank assembly using the screw,

washers, and nut.

8. Align the brake so that the shoes (L) are centered on the face of the wheel

and the brake is perpendicular to the motor shaft, both vertically and

horizontally.

9. Mount the brake so that the center of the brake wheel (R) coincides with

the intersection of a horizontal line passing through the centers of the

shoes (L) and a vertical line passing through the hole (S) located on the

side of the brake frame below the wheel. See Figure 2.

Figure 2: Brake Alignment

10. Using customer-supplied hardware, securely fasten the base of the brake

using the four mounting holes (Q). Additional support is not normally

required under the magnet case.

11. Loosen the manual release nut (F) to its original position and secure with

the cotter pin (G).

12. Connect the brake coil leads (refer to the wiring diagram supplied with the

brake).

Use one of the following methods to relieve the torque spring (D):

•Method 1: Loosen the torque adjusting nut (C) until the torque spring is

no longer under compression.

•Method 2: Perform disassembly steps a through d in the order listed.

a. Tighten the manual release nut (F) until the armature is completely

closed.

b. Remove the stop nut (J) from the end of the overlever assembly (DD).

c. Swing the outboard shoe lever (K) down and remove the connecting rod

spring (H).

NOTE: The latch pin assembly can be arranged to allow operation from

either side of the brake, whichever is most convenient.

The brake automatically

adjusts for ±1/4''

misalignment with respect

to the vertical line. The

brake must be accurately

positioned with respect to

the horizontal line.

INSTALLATION HAZARD

The resistor must be connected in series with

the brake coil on shunt-wound brakes.

Overheated coil can result in injury or

equipment damage.

CAUTION

Relieving Torque Spring Compression

DROP OR MOTION HAZARD

Restrain or remove the hoist load or restrain the bridge/trolley from

moving before releasing the brake.

Failure to follow this instruction will result in death or serious injury.

DANGER

STORED ENERGY HAZARD

• The torque spring is under compression.

• Perform the disassembly and assembly

steps in the exact order listed.

Failure to follow these instructions can

result in death or serious injury.

WARNING

Drum Brakes Class 5010, Type F 5010-22

Adjustments 1/01

8

ENGLISH

d. Loosen the manual release nut (F) and simultaneously raise the overlever

assembly (DD), gradually relieving compression in the torque spring (D).

Depress the spring-loaded latch pin (A), allowing the overlever assembly

to pass.

This section describes the adjustment of the armature gap, shoe clearance,

and brake torque. Letters in parentheses refer to Figure 1 on page 6.

The armature gap indicator (T) indicates the minimum and maximum

allowable armature gap setting. It is mounted on the frame near the bottom

of the magnet case (see Figure 3).

Figure 3: Armature Gap Indicator

On brakes not equipped with the self-adjuster, the stop nut (J) at the end of

the overlever assembly adjusts the armature gap. To adjust the armature

gap:

1. Turn the stop nut clockwise to reduce the armature gap.

2. With the brake set, adjust the stop nut so that the armature gap is at the

minimum setting. Use the jam nut (DD) to lock the stop nut (J) in place.

The self-adjusting brakes are designed to work with Square D factory brake

pads only. As the brake shoe wears, brakes equipped with a self-adjuster

automatically adjust to the correct armature gap/shoe clearance operating

gap. When initially setting up the brake, or after maintenance, manually

ADJUSTMENTS

HAZARDOUS VOLTAGE

Disconnect all power before servicing this equipment.

Failure to follow this instruction will result in death or serious

injury.

DANGER

UNINTENDED EQUIPMENT OPERATION

After performing any adjustment, maintenance, or troubleshooting

procedure, visually verify that the manual release nut (F) is backed off to

the original position and is secured with the cotter pin (G).

Unexpected brake release can result in death, serious injury, or

equipment damage.

WARNING

Armature Gap Adjustment

Armature

Magnet

Case

Armature

Gap

Indicator

Min.

Max.

The armature gap

indicator can be

mounted on either side

of the magnet case,

whichever is most

convenient.

Non Self-Adjusting Brakes

Self-Adjusting Brakes

5010-22 Drum Brakes Class 5010, Type F

1/01 Maintenance

9

ENGLISH

adjust the brake to the maximum gap indicated by the armature gap indicator

(T). This allows the brake to adjust to the correct armature gap.

Adjusting the armature gap also adjusts the shoe clearance. With the

armature gap at the minimum setting, shoe clearance between the wheel and

the brake shoe lining (L) is 1/32 in. Brake shoes automatically self-align for a

uniform gap between the shoe and the wheel. Operate the brake and check

for proper shoe clearance.

The brake torque setting is read directly from the torque calibration plate,

mounted next to the operating spring on the yoke.

Be sure that the brake is set before adjusting the brake torque. Adjust the

torque to the desired value by turning the adjusting nut (C). This varies the

length of the operating spring (D). Use the jam nut (B) to lock the adjusting

nut (C) in place.

This section describes items on the brake that may require periodic

maintenance. Inspect these items regularly. The brake is supplied with oil-

impregnated bearings that do not normally require lubrication in most

environments. Grease fittings are available as an option (standard on 19'' and

23'' brakes), and are recommended for brakes used outdoors or in high

temperature environments.

OSHA code requires the inspection of brakes at 1-month to 12-month

intervals, depending on activity, severity of service, and environment of the

brakes. The code specifically lists the following items for inspection:

deformed, cracked, or corroded members; loose bolts; worn, cracked, or

distorted parts. (OSHA code of Federal Regulations Part 1910.179 J2 and

J3.)

Depending upon the application and environment, wearing parts may require

more frequent inspection. It is your responsibility to determine appropriate

inspection intervals.

As linings wear, the armature gap increases. With the brake set, the armature

gap is correct when the inside of the armature aligns with the inside edge of

the slotted step of the armature gap indicator (T). The maximum allowable

gap is indicated by the outside edge of the slotted step of the armature gap

indicator (Figure 3). The stop nut (J) must be readjusted before the armature

gap reaches the maximum allowable limit.

A hex nut (M) on the shoe assembly acts as a gauge to indicate shoe lining

wear. Replace the lining when its wear surface is even with the top edge of

the hex nut (M). Brake shoe removal does not affect the torque setting.

Shoe Clearance

Brake Torque

MAINTENANCE

HAZARDOUS VOLTAGE

Disconnect all power before servicing the equipment.

DROP OR MOTION HAZARD

Restrain or remove the hoist load or restrain the bridge/trolley from

moving before releasing the brake.

Failure to follow these instructions will result in death or serious

injury.

DANGER

Periodic Inspection

Brake Shoe and Lining

Replacement

Drum Brakes Class 5010, Type F 5010-22

Maintenance 1/01

10

ENGLISH

Replace the brake linings using the following procedures (refer to Figure 1):

1. Disconnect power to the brake.

2. Manually release the brake by removing the cotter pin (G) from the

manual release nut (F) and tightening the manual release nut (F) until the

armature is completely closed.

3. Remove the two hex nuts (M), hex-head cap screws (P), and springs (N)

from each shoe.

4. Slide the shoes (L) out from either side of the brake.

NOTE: Linings are riveted. Replacement lining kits are available (refer to

Tables 7 through 12).

5. Replace the shoes, springs, hex-head cap screws, and hex nuts. Tighten

the hex-head cap screws (P) until the spring (N) is fully compressed.

Loosen the hex-head screws as indicated in Table 5 according to the

brake size.

6. Readjust the armature air gap as explained in “Shoe Clearance” on

page 9.

7. Loosen the manual release nut (F) to its original position and secure with

the cotter pin (G).

The coil and coil core are encapsulated. The operating coil is removed from

the rear of the magnet case. When the coil is removed, the brake settings do

not change and the brake does not need to be released. Normally, it is not

necessary to remove the brake to change the coil.

To remove the coil from the magnet case, perform the following steps in the

order listed:

1. Disconnect power to the brake.

2. Disconnect the coil leads.

3. Remove the six hex-head cap screws (V) from the outer edge of the

magnet case cover.

4. Screw two hex-head cap screws (V) into the threaded blind holes in the

magnet case cover. This will break loose the magnet case cover and coil

core assembly from the magnet case. See Figure 4.

5. A lifting hole (X), located on the magnet case cover, aids in removing the

coil assembly. Slide the coil and core assembly out of the magnet case.

Table 5: Loosening the Brake Lining Spring Compression

Brake Size (inches) Number of Screw Turns Required

81-1/2

10 3/4

13 3/4

16 1-1/2

19 1

23 1-1/2

Coil Replacement

HAZARDOUS VOLTAGE

Disconnect power to the brake before working on the brake coil.

Failure to follow this instruction will result in death, serious injury,

or equipment damage.

DANGER

V

VV

W

X

Figure 4: Rear of Magnet Case

Threaded Blind

Hole

Threaded Blind

Hole

5010-22 Drum Brakes Class 5010, Type F

1/01 Maintenance

11

ENGLISH

6. Lay down the magnet case cover and coil assembly with the flat surface

of the coil downward. See Figure 5.

7. Remove the three hex-head cap screws (W) in the center of the magnet

case cover. Remove the terminal shield and the magnet case cover.

8. Remove any residue particles from inside the magnet case, and wipe it

clean.

9. Verify that the part number of the new coil is correct. See the brake coil

application tables on pages 4–5.

10. Place the new coil and coil core so that the back of the coil is horizontal,

with the coil leads extending vertically. See Figure 5.

11. Position the magnet case cover on top of the coil assembly.

12. Replace the terminal shield and secure with three hex-head cap

screws (W).

13. Seal the space between the coil lead bushing and the magnet case cover

with RTV compound, Dow Corning #RTV 732 or equivalent.

14. Using six hex-head cap screws (V), replace the magnet case cover and

the coil/core assembly into the magnet case.

Perform the following steps to remove the brake wheel (R) from the motor

shaft:

1. Disconnect power to the brake.

2. Manually release the brake by removing the cotter pin (G) from the

manual release nut (F) and tightening the manual release nut until the

armature completely closes.

If replacing the brake wheel and motor armature as a unit, disassemble the

brake according to Method 2 of “Relieving Torque Spring Compression” on

page 7.

Replacement of the frame bushings is recommended during a complete

brake overhaul. Remove power to the brake and secure the load before

removing the brake from the crane.

Perform the following steps to replace the frame bushings:

1. Press out the four stainless steel frame bushings.

2. Press in new bushings (use of the pilot device is recommended).

3. Ensure the lever pin rotates freely.

LIFTING HAZARD

Use lifting hole.

Failure to follow this instruction can result in serious injury or

equipment damage.

CAUTION

Figure 5: Coil and Core Assembly

Coil Leads

Flat Surface

DROP OR MOTION HAZARD

Restrain or remove the hoist load or restrain the bridge/trolley from

moving before releasing the brake.

Failure to follow this instruction will result in death or serious injury.

DANGER

Brake Wheel Replacement

F

rame

B

us

hi

ng

R

ep

l

acement

(Used only on Series C, 10'', 13'',

16'', 19'', and 23'' brakes.)

Drum Brakes Class 5010, Type F 5010-22

Disassembly 1/01

12

ENGLISH

This section contains instructions for disassembling the self-adjusting shoe

mechanism, overlever assembly, armature, and connecting rod lever.

Remove power to the brake before performing these operations.

If the brake is equipped with the self-adjusting shoe mechanism, it can be

removed by following step 7a on page 6.

Before removing the overlever assembly, relieve the compression of the

torque spring (D) using either method in “Relieving Torque Spring

Compression” on page 7.

To reassemble the overlever assembly:

1. Simultaneously tighten the manual release nut (F) against the yoke (E)

and lower the overlever assembly.

2. Ensure that the flange on the manual release nut passes through the hole

in the yoke and the torque spring (D) is seated on the yoke, to allow the

overlever assembly to pass.

3. Loosen the manual release nut (F) to its original position and secure with

the cotter pin (G).

To remove the armature and connecting rod lever, or to gain access to the

lower pins and bearings, perform the following steps in the order listed:

1. If the brake is equipped with the self-adjusting mechanism, remove the

self-adjusting connecting rod by removing the hex-head cap screws,

washers, lock washers, and nuts.

2. Relieve the compression in the torque spring (D) using either method in

“Relieving Torque Spring Compression” on page 7.

3. Disconnect the centering bracket (BB) by removing the cotter pins, nuts,

and springs (Z).

4. Remove the locking pin and the armature pin (AA).

5. Remove the locking pin and the inboard shoe pin (CC).

6. Remove the stop nut (J) from the end of the overlever assembly.

7. Lift the armature, inboard shoe assembly, connecting rod lever, and

overlever assembly from the brake.

When supplied, the self-adjusting shoe mechanism automatically

compensates for shoe lining wear. During normal operation, a ratchet type

assembly, coupled to the armature, automatically adjusts the armature gap

as the shoe linings wear. The standard brake is machined so that the self-

adjusting mechanism can be added as a field modification. Refer to the

bulletin furnished with the self-adjusting mechanism kit for detailed

installation instructions. The self-adjusting shoe mechanism does not require

lubrication.

After the initial brake installation or when replacing the brake shoes, adjust

the shoe clearance and the armature gap:

DISASSEMBLY

STORED ENERGY HAZARD

• The torque spring is under compression.

• Perform the disassembly and assembly steps in the exact order listed.

Failure to follow these instructions can result in death or serious

injury.

WARNING

Self-Adjusting Shoe Mechanism

Overlever Assembly

Armature and Connecting

Rod Lever

SELF-ADJUSTING

SHOE MECHANISM

5010-22 Drum Brakes Class 5010, Type F

1/01 Armature Gap Setup for 19 and 23 Inch Brakes Only

13

ENGLISH

Back off the starwheel stop nut located at the end of the overlever assembly,

until the armature gap is at the maximum allowable setting, as indicated by

the armature gap indicator (T). Manually hold the ratchet rod away from the

starwheel nut while making this adjustment. The self-adjuster will

automatically readjust the armature gap/shoe clearance gap to the correct

setting.

To check for proper assembly of the connecting rod and ratchet rod:

1. For proper operation, the length of the connecting rod, as measured

between the centers of the pivot points at the ends of the rod, should

match the length listed in Table 6.

2. Tighten the connecting rod screws to the torque value listed in Table 6.

There must not be any play between the screw head and bearings.

3. With the brake manually released (armature closed), verify that the

location of the top of the ratchet rod relative to the brake connecting rod

is as listed in Table 6. Ensure the spring holds the ratchet rod firmly

against the starwheel stop nut.

4. The ratchet rod must not be tightened snug to the crank assembly.

Tighten the ratchet rod screw completely, then loosen by one-third turn

(0.025'' clearance). Tighten the jam nut.

Set up the brake using one of two armature gaps, normal or wide. The

orientation of the connecting rod positioner in the crank assembly determines

the armature gap setting. When the brake wheel is subject to wide

temperature variations during operating and cool-off periods, the wider

armature gap may be required to maintain a 1/32 in. minimum shoe

clearance.

To adjust a normal armature gap:

1. Disconnect all power.

2. Install the conecting rod positioner with the larger (1/2 in.-13) tapped hole

positioned closest to the crank assembly pivot pin, refer to Figure 10 on

page 23 and Figure 11 on page 25. This sets the lever arm ration to the

minimum position.

When the self-adjuster overtightens (due to low ambient temperature) and

results in an armature gap less than 1/32 in. adjust a wide armature gap.

To adjust a wide armature gap:

1. Disconnect all power.

2. Rotate the connecting rod positioner 180°. This creates a larger lever arm

ratio, resulting in a larger armature operating gap.

Troubleshooting information can be found on page 26.

Table 6: Connecting Rod and Ratchet Rod Assembly Specifications

Brake Size

(inches)

Length of Connecting

Rod (inches)

Torque

(lb-in)

Ratchet Rod Location Above/

Below the Brake Connecting Rod

8 13.20 225 0.13 inches below center line

10 16.56 225 0.13 inches below center line

13 20.60 225 0.12 inches below center line

16 26.50 225 even with the center line

19 32.62 450 0.15 inches below center line

23 37.80 450 0.15 inches below center line

ARMATURE GAP SETUP FOR

19 AND 23 INCH BRAKES ONLY

Drum Brakes Class 5010, Type F 5010-22

Parts Lists 1/01

14

ENGLISH

NOTE: Refer to Figure 6 for the assembly drawing.

Table 7: Parts List for Class 5010 Type F-08•• 8'' WB Brake, Series A

Item

No. Part No. Description Item

No. Part No. Description

1[1] 5/16''-18 x 1'' hex-head cap screw—6 required 41 [1] 5/16'' plain washer—6 required

2 50903-143-01 Magnet case cover 42 50903-404-03 Lining wear indicator—4 required

3[1] 3/8''-16 x 1'' hex-head steel cap screw—3 required 43 50903-401-10 Pin for armature and shoe levers—4 required

4[1] 5/16'' lock washer—6 required 44 50903-129-50 Inboard shoe lever assembly, includes bearings

5[1] 3/8'' plain lock washer—3 required 45 50903-119-50 Connecting rod lever, includes bearings

6 50903-167-01 Terminal shield 46 50903-115-50 Connecting link assembly, includes bearings

7 50903-166-01 Lead bushing—2 required 47 50903-401-12 Pin for connecting link and rod—3 required

8 29206-00430 O-ring 11/16'' (inside diameter) x 1/8'' wide—

2 required

48 50903-139-01 Armature gap indicator

49 [1] 1/4''-20 x 1-1/4'' hex-head steel cap screw

9 51139-094-01 Nameplate 50 [1] 1/4''-20 hex-head steel jam nut—3 required

10 [1] #6 x 3/8'' drive screw—5 required

[3] 50903-809-51

Assorted hardware package, includes:

4 springs (item 16)

2 “E” rings (item 21)

1 spring (item 22)

1 calibration plate (item 27)

2 locking pins (item 33)

2 lining wear indicators (item 42)

1 armature gap indicator (item 48)

2 #6 x 3/8'' drive screws (item 10)

11 [2, 3] 50903-132-•• Operating coil assembly

12 50903-102-50 Base and magnet case assembly

13 50903-121-50 Armature

14 [3] 29005-40201 Bearing—16 required

15 50903-140-50 Centering bracket

16 50901-010-13 Centering bracket & shoe mounting spring—

6 required

18 [1] 5/16''-18 x 1-1/2'' hex-head steel cap screw—

2 required 60 50903-814-51 Self-adjusting shoe mechanism kit (includes items 61-

80)

20 50903-407-04 Latch pin 61 [1] 3/8'' lock washer—3 required

21 29907-02410 E-ring—2 required 62 50903-158-01 Connecting rod

22 50901-010-09 Latch pin spring 63 29013-02120 Connecting rod end bearings—2 required

23 50903-117-50 Connecting rod assembly 64 [1] 3/8''-24 hex-head jam nut—2 required

24 W10045 Spring seat 65 [1] 3/8''-16 x 1'' hex-head steel cap screw—2 required

25 50901-010-12 Operating spring 66 [1] 3/8''-16 hex-head nut

26 50903-137-50 Yoke 67 [1] 3/8'' plain washer

27 50903-141-01 Calibration plate 69 [1] 3/8''-16 x 1-1/4'' hex-head steel cap screw

28 50904-136-50 Manual release nut 70 [1] 3/8''-16 hex-head jam nut—2 required

29 [1] 3/32'' x 1-1/2'' Cotter pin 71 50903-826-50 Crank assembly

30 [1] Sash chain 72 50903-160-01 Ratchet rod

31 50901-010-11 Connecting rod spring 73 50903-415-01 Crank pin

32 50903-401-11 Yoke pin 74 50906-165-50 Ratchet rod end block

33 50903-402-03 Locking pin—9 required 75 21601-24660 3/8''-16 x 2-1/4'' socket head screw

34 [1] 1/4'' plain lock washer—11 required 76 50901-003-01 Spring

35 [1] 1/4''-20 x 1/2'' hex-head steel cap screw—10 required 77 50904-154-50 Star wheel stop nut assembly

36 [3, 4] 50903-101-50 Shoe assembly, includes lining—2 required 78 50904-161-01 Ratchet rod guide

37 [3, 4] 50903-808-51 Shoe lining kit, includes linings and rivets for 2 shoes 79 [1] #10-24 x 3/8'' pan head screw with lock washer —

2 required

38 50903-127-50 Outboard shoe lever assembly, includes bearings

39 50903-411-50 Elastic stop nut and washer assembly 80 29005-3221 Bearing—2 required

40 [1] 5/16''-18 x 1-3/4'' hex-head cap screw—4 required

[1] Standard hardware, listed without a Square D part number, can be obtained from a local hardware supplier.

[2] Include coil part number or nameplate data.

[3] Parts recommended for general maintenance.

[4] Shoes are of a non-asbestos material.

PARTS LISTS

5010-22 Drum Brakes Class 5010, Type F

1/01 Parts Lists

15

ENGLISH

Figure 6: Class 5010 8” WB Brake Assembly

35

1

4

78

6

10 9

2

11

12

43

33

34

35

79

78

77

76

48

33

34

35

34

35

43

72

65

61

64

62

63 69

61

63

64

73

70

71

80

61

66

61

70

75

74

64

67

35 43

14

46

33

34

47

49

50 34 33 47

47

34

35

33

14

13

20

21 22

45

14

44

14 42

14

37

36

31

28

29

30

35

34

33

34

35

32

16

40

41

39

38

26

27

10

25

24

14

23

18

41

16

41

15

60

Overlever

Assembly

Drum Brakes Class 5010, Type F 5010-22

Parts Lists 1/01

16

ENGLISH

NOTE: Refer to Figure 7 for the assembly drawing.

Table 8: Parts List for Class 5010 Type F-10•• 10'' WB Brake, Series C

Item

No. Part No. Description Item

No. Part No. Description

1 50904-223-01 Magnet case cover 41 50903-401-01 Pin for armature and shoe levers—2 required

2[1] 5/16''-18 x 1-1/2'' hex-head cap screw—10 required 42 50904-129-50 Inboard shoe lever assembly, includes bearings

3[1] 5/16'' plain lock washer—10 required 43 50904-119-50 Connecting rod lever, includes bearings

4 50904-167-01 Terminal shield 44 50904-115-50 Connecting link assembly, includes bearings

5 50904-166-01 Lead bushing—2 required 45 50903-401-03 Pin for connecting link and rod—3 required

6 29206-00430 O-ring 11/16'' (inside diameter) x 1/8'' wide—

2 required

46 50904-226-01 Armature gap indicator

47 [1] 5/16''-18 x 1/2'' hex-head steel cap screw—2 required

7 51139-094-01 Nameplate 48 [1] 5/16''-18 x 1-1/2'' hex-head steel cap screw

8 21008-06120 #6 x 3/8'' drive screw—5 required 49 [1] 5/16''-18 hex-head steel jam nut

9 [2,3] 50904-224-•• Operating coil assembly 50 [1] 5/8''-11 jam nut—3 required

10 50904-218-50 Base and magnet case assembly

[3] 50903-809-52

Assorted hardware package, includes:

4 springs (item 38)

2 springs (item 14)

2 “E” rings (item 19)

2 locking pins (item 30)

1 calibration plate (item 25)

1 armature gap indicator (item 46)

1 spring (item 20)

4 lining wear indicators (item 40)

2 #6 x 3/8'' drive screws (item 8)

11 50904-215-50 Armature

12 [3] 29005-48240 Bearing—16 required

13 50904-140-50 Centering bracket assembly

14 50901-010-02 Centering bracket spring—2 required

15 [1] 3/8'' plain washer 1'' O.D.—4 required

16 [1] 3/8''-16 x 1-3/4'' hex-head steel cap screw—

2 required

18 50903-407-01 Latch pin 60 50903-814-52 Self-adjusting shoe mechanism kit (includes items

61–80)

19 29907-02410 E-ring—2 required

20 50901-010-09 Latch pin spring 61 [1] 3/8'' lock washer—5 required

21 50904-117-50 Connecting rod assembly (Includes items 12 and

50)

62 50904-516-01 Connecting rod

63 29013-02120 Connecting rod end bearing—2 required

22 W10045 Spring seat 64 [1] 3/8''-24 hex-head jam nut—3 required

23 W10020 Operating spring 65 [1] 3/8''-16 x 1-1/2'' hex-head steel cap screw—2 required,

grade 5

24 50904-137-50 Yoke

25 50904-141-01 Calibration plate 66 [1] 3/8''-16 hex-head nut—2 required

26 50904-136-50 Manual release nut 67 [1] 3/8'' plain washer—4 required

27 [1] 3/32'' x 1-1/2'' Cotter pin 69 [1] 3/8''-16 x 1-1/4'' hex-head steel cap screw

28 50901-010-01 Connecting rod spring 70 [1] 3/8''-16 hex-head jam nut—2 required

29 50903-401-02 Yoke pin 71 50904-515-50 Crank assembly

30 50903-402-01 Locking pin—9 required 72 50904-160-01 Ratchet rod

31 [1] 5/16'' plain lock washer—11 required 73 50903-415-01 Crank pin

32 [1] 5/16''-18 x 3/4'' hex-head steel cap screw—

8 required

74 50906-165-50 Ratchet rod end block

75 21601-24660 3/8''-16 x 2-1/4'' socket head screw

33 [3] 50904-101-50 Shoe assembly, includes lining—2 required 76 50901-003-01 Spring

34 [4] 50903-808-52 Shoe lining kit, includes linings and rivets for 2

shoes

77 50904-154-50 Star wheel stop nut assembly

78 50904-161-01 Ratchet rod guide

35 50904-127-50 Outboard shoe lever assembly, includes bearings 79 [1] #10-24 x 3/8'' pan head screw with lock washer—

2 required

36 50903-411-50 Nut and washer assembly

37 [1] 3/8''-16 x 2-1/4'' hex-head cap screw—4 required 80 [5] 50903-401-27 Base pins—2 required

38 50901-010-03 Shoe mounting spring—4 required 81 [5] 50903-827-02 Frame bushings—4 required

39 [1] 3/8'' plain washer—4 required 82 [5] 24201-12480 Cotter pins—2 required

40 50903-404-04 Lining wear indicator—4 required

[1] Standard hardware, listed without a Square D part number, can be obtained from a local hardware supplier.

[2] Include coil part number or nameplate data.

[3] Parts recommended for general maintenance.

[4] Shoes are of a non-asbestos material.

[5] Used on brakes with bushings in the frame.

5010-22 Drum Brakes Class 5010, Type F

1/01 Parts Lists

17

ENGLISH

Figure 7: Class 5010 10” WB Brake Assembly

2

3

4

56

87

1

16

15 14

15

12

21

13

11

12

9

10

4130

31

32

79

78

77

76

46

31

47

30

31

32 80

30

31

32

45

30

32 31 48 49

31 30 45

50

22 23

8

25

24

27

28

26

29

32 32

31

30

31

20

19

18

19

12

43

12

45

12

44

30

31

32 41 12

42

33

34

40

12 38 37

39

36

50

35

66

61

67

65 63

64

62

60

72

69

63

64

61

67

73

70

64

74

75

71

61

70

66 61

81

80

82

Overlever

Assembly

Drum Brakes Class 5010, Type F 5010-22

Parts Lists 1/01

18

ENGLISH

NOTE: Refer to Figure 8 for the assembly drawing.

Table 9: Parts List for Class 5010 Type F-13•• 13'' WB Brake, Series C

Item

No. Part No. Description Item

No. Part No. Description

1 50905-223-01 Magnet case cover 38 [1] 5/16''-18 x 1-3/4'' hex-head steel cap screw

2[1] 3/8''-16 x 1-3/4'' hex-head steel cap screw—

10 required

39 [1] 5/16''-18 hex-head steel jam nut screw

40 50903-404-01 Lining wear indicator—4 required

3[1] 3/8'' plain lock washer—10 required 41 50903-401-07 Pin for armature and shoe levers—2 required

4 50905-167-01 Terminal shield 42 50905-129-50 Inboard shoe lever assembly, includes bearings

5 50905-168-01 Lead bushing—2 required 43 50905-119-50 Connecting rod lever, includes bearings

6 29206-00550 O-ring 7/8'' (inside diameter) x 1/8'' wide—

2 required

44 50905-115-50 Connecting link assembly, includes bearings

45 50903-401-09 Pin for connecting link and rod—3 required

7 51139-094-01 Nameplate 46 50904-226-01 Armature gap indicator

8 21008-06120 #6 x 3/8'' drive screw—5 required 47 [1] 5/16''-18 x 1/2'' hex-head steel cap screw—2 required

9 [2,4] 50905-224-•• Operating coil assembly 48 [1] 3/8'' plain washer—4 required

10 50905-218-50 Base and magnet case assembly

[3] 50903-809-53

Assorted hardware package, includes:

4 springs (item 14)

1 spring (item 20)

2 “E” rings (item 19)

2 locking pins (item 30)

1 calibration plate (item 25)

1 armature gap indicator (item 46)

4 lining wear indicators (item 40)

2 #6 x 3/8'' drive screws (item 8)

11 50905-215-50 Armature

12 [3] 29005-56404 Bearing—16 required

13 50905-140-50 Centering bracket

14 50901-010-07 Centering bracket and shoe mounting spring—

6 required

15 [1] 3/8'' plain washer 1'' O.D.—4 required

16 [1] 3/8''-16 x 1-3/4'' hex-head steel cap screw—

2 required 60 50903-814-53 Self-adjusting shoe mechanism kit (includes items 61-79)

18 50903-407-03 Latch pin 61 [1] 3/8'' lock washer—5 required

19 29907-03210 E-ring—2 required 62 50905-158-01 Connecting rod

20 50901-010-06 Latch pin spring 63 29013-02120 Connecting rod end bearing—2 required

21 50905-117-50 Connecting rod assembly (Includes items

12 and 80)

64 [1] 3/8''-24 hex-head jam nut—3 required

65 [1] 3/8''-16 x 1-1/2'' hex-head steel cap screw—2 required

22 W13045 Spring seat 66 [1] 3/8''-16 hex-head nut

23 W13020 Operating spring 67 [1] 3/8'' plain washer—2 required

24 50905-137-50 Yoke 70 [1] 3/8''-16 hex-head jam nut—3 required

25 50905-141-01 Calibration plate 71 50905-515-50 Crank assembly

26 50905-136-50 Manual release nut 72 50905-160-01 Ratchet rod

27 [1] 3/32'' x 1-1/2'' Cotter pin 73 50903-415-02 Crank pin

28 50901-010-08 Connecting rod spring 74 50906-165-50 Ratchet rod end block

29 50903-401-08 Yoke pin 75 21601-24660 3/8''-16 x 2-1/4'' socket head screw

30 50903-402-01 Locking pin—9 required 76 50901-003-03 Spring

31 [1] 5/16'' lock washer—11 required 77 50905-154-50 Star wheel stop nut assembly

32 [1] 5/16''-18 x 3/4'' hex-head steel cap screw—

8 required 78 50904-161-01 Ratchet rod guide

79 [1] #10-24 x 3/8'' pan head screw with lock washer—

2 required33 [3, 4] 50905-101-50 Shoe assembly, includes lining—2 required

34 [3, 4] 50903-808-53 Shoe lining kit, includes linings and rivets for 2

shoes

80 [1] 3/4''-10 jam nut—3 required

81 [5] 50903-401-28 Base pins—2 required

35 50905-127-50 Outboard shoe lever assembly, includes bearings 82 [5] 50903-827-03 Frame bushings—4 required

36 50903-411-51 Elastic stop nut and washer assembly 83 [5] 24201-12400 Cotter pin—2 required

37 [1] 3/8''-16 x 2-1/4'' hex-head cap screw—4 required

[1] Standard hardware, listed without a Square D part number, can be obtained from a local hardware supplier.

[2] Include coil part number or nameplate data.

[3] Parts recommended for general maintenance.

[4] Shoes are of a non-asbestos material.

[5] Used on brakes with bushings in the frame.

5010-22 Drum Brakes Class 5010, Type F

1/01 Parts Lists

19

ENGLISH

Figure 8: Class 5010 13” WB Brake Assembly

23

4

561

8

7

9

10

41

30

31

32

79

78

77

46

47

30

81

31

32

12

30

32 31 45

16

15

14 15

13

11

12

80

21

29

22 23

8

25

24

27

28

26

32

31

30

31

32

43

12

42

34

33

20

19

18

45

38

39 31 30 45

12

44

30

31

32

41

12 40

12 14

37

48

36

80

35

32 31

30

81

76

72

70

61

67

63

65

64

62

65

61

63

64

67

73

70

71

61

66

61

70

75

74

64

31

60

82

83

Overlever

Assembly

Drum Brakes Class 5010, Type F 5010-22

Parts Lists 1/01

20

ENGLISH

NOTE: Refer to Figure 9 for the assembly drawing.

Table 10: Parts List for Class 5010 Type F-16•• 16'' WB Brake, Series B

Item

No. Part No. Description Item

No. Part No. Description

1 50906-223-01 Magnet case cover 41 50903-404-02 Lining wear indicator—4 required

2[1] 1/2''-13 x 2'' hex-head cap screw—10 required 43 50903-401-04 Pin for armature and shoe levers—2 required

3[1] 1/2'' plain lock washer—12 required 44 50906-129-50 Inboard shoe lever assembly, includes bearings

4 50906-230-01 Terminal shield 45 50906-119-50 Connecting rod lever, includes bearings

5 50906-166-01 Lead bushing—2 required 46 50906-115-50 Connecting link assembly, includes bearings

6 29206-00665 O-rings 1-13/16'' inside diameter x 1/8'' wide—

2 required

47 50903-401-06 Pin for connecting link and rod—3 required

50 50904-226-01 Armature gap indicator

7 51139-094-01 Nameplate 51 [1] 5/16''-18 x 3/4'' hex-head steel cap screw—2 required

8 21008-06120 #6 x 3/8'' drive screw—5 required 52 [1] 3/8''-16 x 1-1/2'' hex-head steel cap screw

9 [3] 50906-224-•• Operating coil assembly 53 [1] 3/8''-16 hex-head steel jam nut

10 50906-218-50 Base and magnet case assembly 55 [1] 1''-8 jam nut—3 required

11 50906-215-50 Armature

[3] 50903-809-54

Assorted hardware package, includes:

4 springs (item 14)

1 spring (item 20)

2 “E” rings (item 19)

2 locking pins (item 31)

1 calibration plate (item 26)

1 armature gap indicator (item 50)

4 lining wear indicators (item 41)

2 #6 x 3/8'' drive screws (item 8)

12 [3] 29005-66446 Bearing—16 required

13 50906-228-50 Centering bracket assembly

14 50901-010-04 Centering bracket and shoe mounting spring—

6 required

15 [1] 3/8'' plain washer 1'' O.D.—4 required

16 [1] 1/2''-13 x 2-1/2'' hex-head steel cap screw—

2 required

18 50903-407-02 Latch pin 60 50903-814-54 Self-adjusting shoe mechanism kit (includes items 61–80)

19 29907-03210 E-ring—2 required 61 [1] 3/8'' lock washer—4 required

20 50901-010-06 Latch pin spring 62 50906-516-01 Connecting rod

21 50906-117-50 Connecting rod assembly (Includes items 12 and

55)

63 50906-517-51 Connecting rod end bearing—2 required

64 [1] 3/8''-24 hex-head jam nut

23 50903-405-01 Spring seat 65 [1] 3/8''-16 x 2'' hex-head steel cap screw (threaded to head)

24 WB416 Operating spring 66 [1] 3/8''-16 hex-head nut

25 50906-137-50 Yoke 69 [1] 3/8''-16 x 1-1/2'' hex-head steel cap screw grade 5

26 50906-141-01 Calibration plate 70 [1] 3/8''-16 hex-head jam nut—3 required

27 50906-136-50 Manual release nut 71 50906-515-50 Crank assembly

28 [1] 1/8'' x 2'' Cotter pin 72 50906-160-01 Ratchet rod

29 50901-010-05 Connecting rod spring 73 50903-415-03 Crank pin

30 50903-401-05 Yoke pin 74 50906-165-50 Ratchet rod end block, includes bearings

31 50903-402-02 Locking pin—9 required 75 21601-24660 3/8''-16 x 2-1/4'' socket head screw

32 [1] 3/8'' lock washer—9 required 76 50901-003-02 Spring

33 [1] 3/8''-16 x 1'' hex-head steel cap screw—7 required 77 50906-154-50 Star wheel stop nut assembly

34 [3] 50906-101-50 Shoe assembly, includes lining—2 required 78 50906-161-01 Ratchet rod guide

35 [3, 4] 50903-808-54 Shoe lining kit, includes linings and rivets for 2

shoes 79 [1] #10-24 x 1/2'' pan head screw with lock washer—

2 required

36 50906-127-50 Outboard shoe lever assembly, includes bearings 80 [1] 1/2''- 20 hex-head jam nut—2 required

37 50903-411-52 Elastic stop nut and washer assembly 81 [5] 50903-401-29 Base pins—2 required

38 [1] 1/2''-13 x 3-1/4'' hex-head cap screw—4 required 82 [5] 50903-827-04 Frame bushings—4 required

39 [1] 5/16'' lock washer—2 required 83 [5] 24201-16640 Cotter pin—2 required

[1] Standard hardware, listed without a Square D part number, can be obtained from a local hardware supplier.

[2] Include coil part number or nameplate data.

[3] Parts recommended for general maintenance.

[4] Shoes are of a non-asbestos material.

[5] Used on brakes with bushings in the frame.

5010-22 Drum Brakes Class 5010, Type F

1/01 Parts Lists

21

ENGLISH

Figure 9: Class 5010 16” WB Brake Assembly

23

4

56

8

7

1

9

10

43

31

32

33

50

39

51

79

78 77

52

53 3231

65

32

31

47

12

31

32

33

81 31

32

33

81

76

72

62

60

63 80

70

61

65

31

64

69

63

61

80

73

70

71

61

66

70

75

74

11 18

12

19

20

19

12

33

32 31 32 33

30 29

28

27

35

34

12

44

47

45

46

31

32

33

43 12 41

3

14

338

12

37

55

36

26

8

25

24

23

55 21

16 12

13

3

14

3

82

83

Overlever

Assembly

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Electric Controller & Mfg. (EC&M) DC Magnetic Drum Brake - Class 5010-22, 8 to 23in Type F Guide d'installation

Electric Controller & Mfg. (EC&M) DC Magnetic Drum Brake - Class 5010-22, 8 to 23in Type F Guide d'installation

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