P42.31-2061-07
Shown on model 171.442
1 Spring washer
2 O-ring
A7/7x1 Diaphragm travel sensor connector
A7/7 BAS brake booster
A7/7b1 BAS diaphragm travel sensor
Modification notes
| Remove/install | ||
1 | Eliminate vacuum in BAS brake booster (A7/7) | To do this, press the brake pedal several times with the engine switched off. | |
2 | Open engine hood and raise to vertical position | ||
3 | Unlock the diaphragm travel sensor connector (A7/7x1) and disconnect. | ||
4 | Lift spring lock washer (1) using screwdriver and pull BAS diaphragm travel sensor (A7/7b1) out of BAS brake booster (A7/7). | In order to prevent a permanent set of the spring lock washer (1), left up the spring lock washer (1) by a maximum of 10 mm. | |
Installation: Replace O-ring (2). | |||
Installation: Check to make sure that spring lock washer (1) engages correctly in grooves at BAS diaphragm travel sensor (A7/7b1) and at BAS brake booster (A7/7). | |||
5 | Install in the reverse order | ||
6 | Read out and erase the fault memory using Star Diagnosis | ||
Danger! | Risk of death caused by limbs being caught or crushed by rotating parts when performing tests on the brake test stand | Never leave the vehicle unattended on the rollers except in an emergency. Ensure that no one is under the vehicle or near rotating parts during testing. In case of emergency, use the EMERGENCY STOP switch to shut down test stand. | |
7 | Carry out brake test on the test stand |
Referenced documents
- ad0000p200004a Connect STAR DIAGNOSIS and read out fault memory
- ad0000p200004a
- ap4200p4290ba Brake test
- ar8840p1000v Opening engine hood, moving to upright position and closing
- as4200z000101a Risk of death caused by limbs being caught or crushed by rotating parts when performing tests on the brake test stand