Remove/install rear axle brake disk

AR42.10-D-0240FB

Remove/install rear axle brake disk

06.03.2020

Model

909.64

Model

909.8

Shown on left side of vehicle

1

Screw

2

Caliper support

3

Brake disk

4

Wheel flange ring

5

Screw

6

Brake linings

 Danger

Risk of accident when commissioning the vehicle due to a lack of braking effect when the service brake is operated for the first time after repair work.

Before starting the engine, actuate brake pedal several times until pressure is built up and maintained in the brake system.

AS42.50-Z-0002-01A

 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

Notes on evaluating brake disks

AH42.10-N-9406-07B

Topical note

Notes on repairs to brake system

AH42.00-P-0003-01A

 

Remove/install

1

Remove brake linings (6)

AR42.10-D-1700FC

2

Remove bolts (1) and remove brake caliper support (2)

 Bolt, brake caliper support to rear axle tube

*BA42.10-N-1001-12A

3

Apply parking brake

4

Unfasten screws/bolts (5) for wheel flange ring (4) and brake disk (3), but do not remove

 Collar bolt, wheel flange ring with brake disk to wheel hub

*BA42.10-N-1002-13A

5

Release parking brake and increase clearance of brake shoes of parking brake

 Use a suitable screwdriver to turn the adjustment wheel for the brake-shoe adjuster far enough for the parking brake's brake shoes to have sufficient play to enable the brake disk (3) to be removed.

6

Slacken clamp screw on eccentric disk of pressure transformer unit for brake cables

AR42.20-D-0520-03F

7

Remove bolts (5) and remove wheel flange ring (4)

8

Remove brake disk (3)

 Installation: Check all detachable parts of brake disk for wear and damage, replace if necessary.

Brake disk thickness

*BE42.10-N-1001-09B

9

Clean all detachable parts and contact surfaces of brake disk

Assembly cleaner

*BR00.45-Z-1028-04A

 Brake caliper brush

*000589266800

10

Install in the reverse order

11

Adjust parking brake

AR42.20-D-0540FB

12

Check brake system for leaks

AR42.10-D-0100-01F

13

Check fluid level in the brake fluid reservoir, correct if necessary



AP42.50-D-4210F

Check values for rear axle brake disks

Number

Designation

Model 909.64

Model 909.8

BE42.10-N-1001-09B

Brake disk thickness

New

mm

22

22

Wear limit

mm

19

19

Max. lateral runout

mm

0,1

0,1

Max. axial runout

mm

0,02

0,02

Repair limit dimension

mm

-

-

 Rear axle brake caliper

Number

Designation

Model 909.64

Model 909.8

BA42.10-N-1001-12A

Bolt, brake caliper support to rear axle tube

M121.5

Nm

-

-

M141.5

Stage 1

Nm

170

170

Stage 2

°

-

-

M161.5

Stage 1

Nm

-

-

Stage 2

°

-

-

 Rear axle brake disks

Number

Designation

Model 909.64

Model 909.8

BA42.10-N-1002-13A

Collar bolt, wheel flange ring with brake disk to wheel hub

M141.5

Stage 1

Nm

200

200

Stage 2

°

-

-

Repair materials

Number

Designation

Order number

BR00.45-Z-1028-04A

Assembly cleaner

A 000 986 56 01