Disassemble/assemble brake caliper with parking brake lever of rear axle

AR42.10-G-0551C

Disassemble/assemble brake caliper with parking brake lever of rear axle

06.08.2020

Model

437.420/425

Model

437.421/426 with rear axle 747.366

1

Cap

7

Spring retainer

17

Shim

2

Adjusting spindle

8

Retaining ring

18

Lock washer

3

Reset shaft

9

Compression spring

19

Retaining ring

5

Piston

10

Drive spindle

22

Nut

6

Sealing ring

11

Tappet

23

Screw plug

4

Vent valve

14

Actuating lever

20

Eccentric shaft

12

Sealing washer

15

Sealing ring

21

Needle bearing

13

Retaining ring

16

Support disk

 Caution

Risk of poisoning from swallowing brake fluid. Risk of injury from skin and eye contact with brake fluid

Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid.

AS42.50-Z-0001-01A

Topical note

Brake fluid notes

AH42.50-P-0001-01A

Topical note

Notes on repairs to brake system

AH42.00-P-0003-01A



Remove

1

Remove rear axle brake caliper

AR42.10-G-0080C



Disassemble

2

Disassemble rear axle brake caliper

AR42.10-G-0550-01C

Topical note

Notes on direction of rotation for adjustment of clearance

AH42.10-N-0007-01C

 Observe rotational direction of adjusting spindle (2) and reset shaft (3).

Spirit

*BR00.45-Z-1032-04A

 Mounting fixture

*418589003100

3

Disassemble second brake caliper on rear axle

Model 437.420/425
with code X18 (Load rating I)
Model 437.420/425
with code X20 (Load rating III)
Model 437.421/426 with rear axle 747.366
with code X18 (Load rating I)
Model 437.421/426 with rear axle 747.366
with code X20 (Load rating III)

AR42.10-G-0550C



Assemble

4

Assemble brake caliper on rear axle

AR42.10-G-0550-02C

Topical note

Notes on direction of rotation for adjustment of clearance

AH42.10-N-0007-01C

 Observe direction of rotation of adjusting spindle (2) and reset shaft (3).

 Bolt, brake caliper half to brake caliper half

*BA42.10-N-1001-12G

 Screw plug (flange side)

*BA42.10-N-1002-12G

 Jam nut (cover side)

*BA42.10-N-1003-12G

 Mounting fixture

*000589004000

 Resetting device

*000589524300

 Basic drift

*406589041500

 Insertion tool

*406589084300

 Assembly tool

*406589114300

 Insertion tool

*406589134300

 Mounting fixture

*418589003100

5

Assemble second brake caliper on rear axle

Model 437.420/425
with code X18 (Load rating I)
Model 437.420/425
with code X20 (Load rating III)
Model 437.421/426 with rear axle 747.366
with code X18 (Load rating I)
Model 437.421/426 with rear axle 747.366
with code X20 (Load rating III)

AR42.10-G-0550C



Install

6

Install rear axle brake caliper

AR42.10-G-0080C

7

Bleed brake system

Model 437.420/425
Model 437.421/426 with rear axle 747.366 with front axle 737.366

AR42.10-G-0010C



Check

8

Check brake system for leaks and proper function

 Rear axle brake caliper

Number

Designation

Model 437.420/425

Model 437.421/426 with rear axle 747.366

BA42.10-N-1001-12G

Bolt, brake caliper half to brake caliper half

Nm

295

295

 Rear axle brake caliper

Number

Designation

Model 437.420/425

Model 437.421/426 with rear axle 747.366

BA42.10-N-1002-12G

Screw plug (flange side)

Nm

42

42

 Rear axle brake caliper

Number

Designation

Model 437.420/425

Model 437.421/426 with rear axle 747.366

BA42.10-N-1003-12G

Jam nut (cover side)

Nm

40

40

Repair materials

Number

Designation

Order number

BR00.45-Z-1032-04A

Spirit

Use corresponding commercially available repair materials.