For 1990-2009 cars

## Oil Pressure Relief Valve Replacement Primary

### Removal Procedure

1. Remove the oil pan. Refer to Oil Pan Replacement.
2. Remove the oil pressure relief valve plug (3).
3. Remove the valve spring (2).
4. Remove the valve piston (1).

### Installation Procedure

1. Clean the plug thread, spring and piston (1).
2. Install the valve piston (2).
3. Install the valve spring (3).

Caution: Refer to Fastener Caution in the Preface section.

4. Install the oil pressure relief valve plug.

Tighten
Tighten the oil pressure relief valve plug to 21 N·m (15.5 lb ft).

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

## Oil Pressure Relief Valve Replacement Secondary

### Removal Procedure

1. Remove the oil pan. Refer to Oil Pan Replacement.
2. Remove the oil overpressure relief valve plug (3).
3. Remove the valve spring (2).
4. Remove the valve piston (1).

### Installation Procedure

1. Clean the plug thread, spring and piston (1).
2. Install the valve piston (2).
3. Install the valve spring (3).

Caution: Refer to Fastener Caution in the Preface section.

4. Install the oil overpressure relief valve plug.

Tighten
Tighten the oil pressure relief valve plug to 10 N·m (88.5 lb in).

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