Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Proportioning Valve

Removal

CAUTION: Do not allow brake fluid to get on painted surfaces.

1. Clean around reservoir cap and take out fluid with syringe or such.
2. Disconnect brake pipes (1) from P valve (2).





3. Remove P valve (2) from master cylinder (3).

WARNING: Never disassemble P valve assembly. If it is found faulty, replace it with new assembly.

Installation
1. Install P valve (2) to master cylinder (3).
Tightening torque
P valve bracket bolt (a): 10 Nm (1.0 kgf-m, 7.5 ft. lbs.)
P valve bolt (b): 23 Nm (2.3 kgf-m, 17.0 ft. lbs.)





2. Tighten flare nuts (1) to specified torque.
Tightening torque Brake pipe flare nut (c): 16 Nm (1.6 kgf-m, 11.5 ft. lbs.)
3. Fill reservoir with specified brake fluid.
4. After installing, check brake pedal play and bleed air from system.
5. Perform brake test and check each installed part for fluid leakage.