4 Runner 2WD L4-2693cc 2.7L DOHC MFI (1997)
2. Check piston return spring.
Check the return spring free length together with the spring seat.
Standard free length: 12.9 mm (0.508 in.)
FIRST AND REVERSE BRAKE PISTON ASSEMBLY
1. Install No.1 brake piston.
a. Coat the 3 new O-rings with ATF.
b. Install the 2 O-rings on No.1 brake piston.
c. Install the O-ring on the reaction sleeve.
d. Install the No.1 brake piston on the reaction sleeve.
2. Install reaction sleeve and No.1 brake piston to transmission case.
With the No.1 brake piston underneath (the rear side), install the brake reaction sleeve and No.1 brake piston to the transmission case.
NOTICE: Be careful not to damage the O-rings.
3. Install No.2 brake piston.
a. Coat the new O-ring with ATF. Install the O-ring on No.2 brake piston.
c. With the spring seat of the piston upwards (the front side), place the piston in the transmission case.
NOTICE: Be careful not to damage the O-rings.