For 1990-2009 cars

### Removal Procedure

1. Remove the oil pan. Refer to Oil Pan Replacement .
2. Remove the oil flow check valve.

Remove the closure bolt (1).

3. Remove the spring (2) and the piston (3).
4. Clean the parts.
5. Inspect the parts.
6. Clean the thread.

### Installation Procedure

Notice: Refer to Fastener Notice in the Preface section.

1. Install the oil flow check valve.

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

Tighten
Tighten the bolt to 10 N·m (89 lb in).

2. Install the oil pan. Refer to Oil Pan Replacement .