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

Engine Oil Control Valve: Service and Repair



Oil Pressure Relief Valve Replacement

Removal Procedure





1. Remove the oil pressure relief valve.
Remove the closure bolt (1).
2. Remove the spring and the piston.
3. Clean the parts.
4. Inspect the parts.
5. Clean the thread.



Installation Procedure

1. Install the oil pressure relief valve.

Notice: Refer to Fastener Notice (Fastener Notice) .

2. Install the spring and piston in the pump module together with the closure bolt.

Tighten the closure bolt to 21 N.m (16 lb ft).