RAV4 4WD L4-2.5L (2AR-FE) (2009)
Brake Master Cylinder: Testing and Inspection
Inspection
BRAKE: BRAKE MASTER CYLINDER: INSPECTION
INSPECTION
NOTICE:
-
The master cylinder and piston are designed so that the piston can easily fall out. Prevent this by making sure that the tip of the master
cylinder points downward when handling the master cylinder.
-
Make sure foreign matter does not adhere to the piston of the master cylinder. If foreign matter adheres, clean it off with a cloth. Then
apply lithium soap base glycol grease to the entire outer circumference of the piston surface that contacts the booster.
1. INSPECT AND ADJUST BRAKE BOOSTER PUSH ROD
HINT: Adjust the booster push rod when the master cylinder is replaced with a new one. Adjustment is not necessary when the master
cylinder is reinstalled and the booster is replaced with a new one.
(a) Set SST on the master cylinder and lower the rod of SST until it just touches the piston.
SST: 09737-00013
HINT: SST 09737-00012 can also be used.
(b) Apply chalk to the flat tip of the rod of SST. Turn SST upside down and measure the clearance between the brake booster push rod and SST.
Standard clearance:
-0.21 to 0 mm (-0.0083 to 0 in.)
If there is clearance between the main body of SST and the shell of the brake booster, the push rod is protruding too far. If the chalk does not
stick to 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 7 mm socket
driver.
SST: 09737-00020
NOTE: Check the push rod clearance again after adjusting.