P43.10-2004-09
| Removing, installing | ||
Danger! | Risk of poisoning from swallowing brake fluid. Risk of injury from skin and eye contact with brake fluid | Pour brake fluid only into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid. | |
| Notes on brake fluid | ||
| Notes on repairs to brake system | ||
1 | Remove, install stepped tandem brake master cylinder | Installation: Replace O-ring (18). | |
2 | Remove, install ASR charging pump | Models 129, 140 up to 31.5.94 with ASR code 471a | |
| Checking | ||
3 | Check master brake cylinder for leaks at rear piston | Visual inspection: | |
| Notes if loss of brake fluid is not visible externally | ||
4 | Unscrew or unplug vacuum line (8) from brake booster (16) | Operate brake pedal several times until the vacuum in the brake booster is reduced (only for plug-in vacuum lines). | |
| |||
5 | Unplug connector (A7/7x1, A7/7x2) from BAS control module or, on vehicles with ESP, unplug connectors from BAS solenoid valve release switch and BAS diaphragm travel sensor on brake booster | On vehicles with BAS and ESP, the BAS control module is integrated into the ESP control module. | |
6 | Remove cover below instrument panel | Model 129 | |
Model 140 | |||
Model 170 | |||
Model 202 | |||
Model 210 | |||
7 | Unhook brake pedal return spring (25) | Installation: | |
Remove and adjust stop lamp switch | |||
8 | Pull off retainer and pull out pin (26) | ||
9 | Unscrew nuts (23) from carrier (22) | | |
10 | Remove brake booster (16) | Do not damage the brake booster control housing. | |
| Checking | ||
11 | Check gasket (21) | Check gasket (21) for damage and proper seating, and replace if necessary. | |
12 | Install in the reverse order | ||
13 | Adjust and check parking shift lock | Transmission 722.3/5 | |
Transmission 722.6 (NAG transmission) |
Pneumatic brake booster
Number | Designation | Model 129 up to 09/89 | Model 129 as of 10/89 | Model 140 | Model 202 | |
BA43.10-P-1001-01A | Vacuum line to brake booster | Nm | 30 | 30 | 30 | 30 |
BA43.10-P-1002-01A | Nut, brake booster carrier to front end | Nm | 15 | 20 | 20 | 20 |
Pneumatic brake booster