Oil Pump Assemble L98, LS2

Important: Prior to assembling the oil pump, coat all wear or internal surfaces with clean engine oil.

Important: Install the driven gear with the orientation mark facing the pump cover.

1. Install the driven gear (2).
2. Install the drive gear (1).



3. Install the oil pump cover (2).

Notice: Refer to Fastener Notice in the Preface section.

4. Install the oil pump cover to oil pump housing retaining bolts (3).

Tighten
Tighten the bolts to 12 N·m (106 lb in).




5. Install the pressure relief valve (3).
6. Install the pressure relief valve spring (2).
7. Install the pressure relief valve plug (1).

Tighten
Tighten the plug to 14 N·m (124 lb in).

8. Inspect the oil pump components. Refer to Oil Pump Cleaning and Inspection.
9. Inspect the oil pump for smooth operation by rotating the drive gear.

Oil Pump Assemble LS3

Important: Prior to assembling the oil pump, coat all wear or internal surfaces with clean engine oil.

1. Install the driven gear (412) into the pump housing (413).

Install the driven gear with the orientation mark facing the pump cover.

2. Install the drive gear (410) into the pump housing.
3. Install the oil pump cover (409).

Notice: Refer to Fastener Notice in the Preface section.

4. Install the oil pump cover bolts (408).

Tighten
Tighten the oil pump cover bolts to 12 N·m (106 lb in).

5. Install the relief valve (414).
6. Install the relief valve spring (415).
7. Install the relief valve plug (416).

Tighten
Tighten the relief valve plug to 12 N·m (106 lb in).

8. Inspect the oil pump for smooth operation by rotating the drive gear.