AR42.10-P-0165FF | Remove/install brake shoes at rear axle | 21.4.08 |
MODEL 454.0 except CODE (30Y) Disk brakes on rear axle
P42.10-2521-11
1 Wheel brake cylinder
2 Retaining pin
3 Clamping spring
4 Brake shoe
5 Handbrake cable
6 Support bushing
Modification notes
| Remove/install | ||
Danger! | Risk of poisoning caused by swallowing brake fluid. Risk of injury caused by brake fluid coming into contact with skin and eyes. | Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid. | |
| Brake fluid notes | ||
| Notes on repairs to brake system | ||
1 | Remove brake drum | ||
2 | Remove wheel bearing | The wheel bearing bolts remain in the rear axle so that the brake anchor plate cannot fall off. | |
3 | Unhook brake shoes (4) from support bushing (6) using suitable tool | ||
4 | Remove clamping springs (3) from brake shoes (4) using pliers and detach retaining pins (2) | | |
5 | Lift out brake shoes (4) together with springs and slack adjuster, while simultaneously pushing together pistons of wheel brake cylinder (1) | Do not damage the dust boots of the wheel brake cylinder (1), otherwise a new wheel brake cylinder will have to be installed. | |
6 | Unhook hand brake cable (5) from rear brake shoe (4) | ||
7 | Remove brake shoes (4) | Installation: The brake lining of the brake shoes (4) must be free of grease, otherwise the braking effect will be uneven. | |
8 | Clean brake anchor plate | Installation: Apply a thin coating of brake paste to the contact surfaces of the brake shoes (4) on the brake anchor plate. | |
Brake paste | |||
9 | Check the ease of movement of the wheel brake cylinder (1) and leaktightness of the boots | Install a new wheel brake cylinder (1) at the first sign of brake fluid leakage or sluggishness. Refer to: | |
Remove/install wheel brake cylinder | |||
10 | Disassemble brake shoes (4) | Only if individual components are to be replaced. | |
| Checking | ||
11 | Check wear and condition of brake shoes (4) and brake drums using vernier caliper; replace if necessary | Brake drum diameter | |
Brake lining thickness | |||
| |||
12 | Install in the reverse order |
Test values for drum brake
Number | Designation | Model | ||
BE42.10-P-1001-12D | Brake drum diameter | New | mm | 203.0 |
Wear limit for maintenance service | mm | 204.4 | ||
BE42.10-P-1002-12D | Brake lining thickness | Wear limit for maintenance service | mm | 2 |
450 589 01 19 00
Vernier caliper
Pliers
168 589 00 37 00
Repair materials
Number | Designation | Order number |
BR00.45-Z-1060-06A | Brake paste | Q0007414V000000000 |
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