Brake Master Cylinder: Testing and Inspection

BRAKE MASTER CYLINDER:

INSPECTION

1. INSPECT BRAKE MASTER CYLINDER
(a) Check the inside of the brake master cylinder for scratch.

HINT: Replace the master cylinder sub-assembly if necessary.

2. INSPECT AND ADJUST BRAKE BOOSTER PUSH ROD





(a) Set SST on the master cylinder and lower the rod of the SST until it slightly touches the piston.
SST: 09737-00013
(b) Apply chalk to the flat tip of the SST rod. Turn the SST upside down and measure the clearance between the brake booster push rod and the SST.
Clearance:
-0.21 to 0 mm (-0.0083 to 0 in.)

HINT: If there is a clearance between the SST main body and the shell of the brake booster, 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.





(c) If the clearance is not within the standard, adjust the length by holding the rod using SST and turning the tip of the rod using a socket driver (7 mm).
SST: 09737-00020

HINT: Check the push rod clearance again after adjustment.