51. Oil Pump Assemble

Oil Pump Assemble

^ Tools Required
- EN 46342 Driver Handle
- EN 46347 Crankshaft Front Oil Seal Driver





1. Lubricate the rotors (432, 433) and valve (420) with clean engine oil.
2. Install the rotors (432, 433) to original direction.
3. Install the cover (434).
4. Apply threadlock GM P/N 12346240 (Canadian P/N 10953493) or equivalent to the threads of the bolts (435).

5. Notice: Refer to Fastener Notice in Service Precautions.

Install the bolts (435).
Tighten the bolts to 6 Nm (53 inch lbs.).
6. Apply sealant GM P/N 12346240 (Canadian P/N 10953493) to the threads of the bolt (422).
7. Install the valve (420), spring (421) and bolt (422). The valve must slide freely in the housing bore.
Tighten the bolt to 39 Nm (28 ft. lbs.).
8. Apply sealant GM P/N 12346240 (Canadian P/N 10953493) or equivalent to the threads of the switch (705).
9. Install the switch (705).
Tighten the switch to 18 Nm (13 ft. lbs.).
10. Apply sealant GM P/N 12346240 (Canadian P/N 10953493) to the threads of the plugs (438, 439).
11. Install the plugs (438, 439).
1 Tighten plug (438) to 44 Nm (32.5 ft. lbs.).
2 Tighten plug (439) to 34.3 Nm (25.3 ft. lbs.).





12. Use the EN 46347 (2) and the EN 46342 (1) in order to install the oil seal. Gently tap and install the NEW oil seal until the tool bottoms on the oil pump housing.