Oil Pump Assemble

Tools Required

• EN 46342  Driver Handle. See Special Tools .
• EN 46347  Crankshaft Front Oil Seal Driver. See Special Tools .

Fig 1: Exploded View Of Oil pump Assembly
Courtesy of GENERAL MOTORS CORP.
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).
NOTE: Refer to Fastener Notice in Cautions and Notices.
5. Install the bolts (435).

   Tighten:  Tighten the bolts to 6 N.m (53 lb in).

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:  Tighten the bolt to 39 N.m (28 lb ft).

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:  Tighten the switch to 18 N.m (13 lb ft).

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).

    Tighten: 

    1. Tighten plug (438) to 44 N.m (32.5 lb ft).
    2. Tighten plug (439) to 34.3 N.m (25.3 lb ft).

Fig 2: Installing Crankshaft Front Oil Seal
Courtesy of GENERAL MOTORS CORP.
12. Use the EN 46347  (2) and the EN 46342  (1) in order to install the oil seal. See Special Tools . Gently tap and install the NEW oil seal until the tool bottoms on the oil pump housing.