Hardening, shrinkage, or damage of both gaskets and O-rings after disassembly can reduce sealing performance.
Remove old gaskets and clean the sealing surfaces thoroughly so that no gasket material or other material remains.
Install the new gaskets and replace the used O-rings when re-assembling.

Force
Liquid Gasket, Non-permanent Locking AgentPiston Ring Groove Width Inspection
Measure the piston ring groove width.
Use a vernier caliper at several points around the piston.
Piston Ring Groove Width
Standard:
Top [A] 0.82 0.84 mm (0.0323
0.0331 in.)
Second [B] 0.82 0.84 mm
(0.0323 0.0331 in.)
Service Limit:
0.92 mm (0.036 in.)
Second 0.92 mm (0.036 in.)
...
Brake Pedal Installation
Apply grease to the brake pedal pivot shaft [A].
Install:
Washers [B]
Brake Pedal [C]
Apply a non-permanent locking agent to the threads of
the brake pedal mounting bolt [D], and tighten it.
Torque - Brake Pedal Mounting Bolt: 8.8 N·m (0.90 kgf·m,
78 in·lb)
Install the re ...
Torque Limiter Installation
Apply molybdenum disulfide grease to the torque limiter
shaft [A].
Install the torque limiter [B], the collar [C] and the shaft.
Turn the large-hole end of the shaft to inside as shown in
the figure.
Replace the washer [D] with a new one.
Apply a non-permanent locking agent to the t ...