Jetta V6-2.8L (AFP) (1999)
Brake Master Cylinder: Service and Repair
Master Cylinder/Brake Booster, Servicing
Brake Master Cylinder/Brake Booster, Servicing
Note:
^
Master cylinders and brake boosters can be replaced separately
1. Brake booster
^
With gasoline engines vacuum is taken from the intake manifold
^
With Diesel engines a vacuum pump provides the required vacuum.
^
Functional check:
-
With engine switched off, depress brake pedal firmly several times (to exhaust vacuum in booster).
-
Depress brake pedal with average foot pressure, hold and start engine. If the booster is working properly, the pedal will give slightly under
foot (booster becomes effective).
^
If faulty replace complete.
^
Check valve (in vacuum hose), Functional check. Refer to Vacuum pump for brake booster, removing and installing (vehicles with Diesel
engines).
^
Separating booster from brake pedal.
^
Removing and installing. Refer to Brake booster, removing and installing.
2. Cap
3. Brake fluid reservoir
4. Sealing plug
^
Moisten with brake fluid and press into reservoir
5. Retainer pin
^
Insert through brake master cylinder
6. Brake master cylinder
^
Cannot be repaired. If faulty, replace complete.
7. Self-locking hex nut, 20 Nm (15 ft. lbs.)
8. Seal
^
Always replace
9. Sealing plug
10. Vacuum hose
^
Insert into brake booster
11. Gasket
12. Self-locking nut, 20 Nm (15 ft. lbs.)
13. Boot
^
Must be seated correctly or may cause air noise