Figure 300. Brake booster: 1 - vacuum hose; 2 - amplifier; 3 - gasket; 4 — nut, 25–28 N·m; 5 — pusher finger
The work on removing the booster is in many ways similar to the work described above on removing the master brake cylinder, especially since the latter must be removed before dismantling the booster. When working, use the drawing as a guide 300.
After removing the main brake cylinder, remove the cotter pin and remove the pusher pin 5, unscrew the fastening nut 4 from the pedal compartment. Remove the gasket 3 located on the rear side.
Assembly is carried out in reverse order. When installing, be careful not to pinch the brake fluid level indicator lamp wire. Tighten the 4 fastening nuts to a torque of 25–28 N·m.
After starting the engine, check the operation of the amplifier as described above.
Sometimes brake fluid from the master cylinder leaks into the booster. If after removal it is established that there was more than 100 ml of brake fluid in the booster, the booster must be replaced.