Brake master cylinder and vacuum brake booster, servicing
NOTE:
- Brake master cylinders and brake boosters from different suppliers are installed in production.
- If replacement is necessary, parts from different suppliers are interchangeable.
The following list pertains to Fig 1.
- Cap
- Seal
- Brake fluid reservoir
- Plug
- Moisten with brake fluid and press into reservoir
- Not for USA/Canada models
- Master cylinder
- Replace complete unit if necessary
- 20 N.m (15 ft lb)
- Washer
- Always replace
- Not for USA/Canada models
- Seal
- Always replace
- Vacuum brake booster
- Cannot be repaired, replace complete unit if necessary
- Booster function is OK if pedal drops slightly as vacuum builds and boost takes effect
- Separating from brake pedal, seeBRAKE PEDAL, SEPARATING FROM BRAKE BOOSTER
Checking function:
- Depress brake pedal several times with engine not running, to relieve vacuum
- Depress and hold brake pedal while starting engine
Check valve in vacuum line:
- It should be possible to blow air through valve in direction of arrow on valve (blowing air through valve in opposite direction should close valve)
- 20 N.m (15 ft lb)