Brake Master Cylinder: Testing and Inspection

BRAKE: BRAKE MASTER CYLINDER:

INSPECTION

1. INSPECT BRAKE MASTER CYLINDER
(a) Check the cylinder bore for rust or scoring.
2. INSPECT AND ADJUST BRAKE BOOSTER PUSH ROD





(a) Set SST on the master cylinder and lower the pin of the SST until it slightly touches the piston.
SST: 09737-00013
(b) Apply chalk to the flat surfaced tip of the SST pin.
(c) Turn SST upside down and measure the clearance between the brake booster push rod and SST.
Clearance:
0 mm (0 in.)

HINT:
- If there is a clearance between the SST main body and the shell of the brake booster (floating SST main body), the push rod is protruding too far.
- If the chalk does not stick on the tip of the brake booster push rod, the push rod protrusion is insufficient.

HINT: Adjust the clearance if either of the above conditions is detected.





(d) If the clearance is outside of the specified range, fix the push rod using SST and adjust the length of the protruding adjusting bolt.
SST: 09737-00020

HINT: When adjusting the push rod, depress the brake pedal sufficiently so that the push rod sticks out.