Oil Pump Installation

Tools Required

• J 35268-A  Camshaft/Front Main Seal Installer. See Special Tools and Equipment .
• J 36660-A  Torque Angle Meter. See Special Tools and Equipment .
• J 42065  Crank Hub Holding Tool. See Special Tools and Equipment .
• J 42098  Crank Hub TORX® Socket. See Special Tools and Equipment .

Fig 1: Installing Oil Pump Gasket
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: Do not cover and/or restrict the gasket openings and oil passages with sealant. Only apply sealant to the crosshatched area of the gasket as shown in the illustration.
1. Coat only the pump side of the new oil pump gasket with a thin, even coating of GM P/N 1052942 (Canadian P/N 10953466) or equivalent.
2. Install the oil pump gasket.
Fig 2: Identifying Guide Pins
Courtesy of GENERAL MOTORS CORP.
3. Install the oil pump and align with the guide pins (2).
4. Coat the oil pump bolts with GM P/N 12345382, (Canadian P/N 10953489) or equivalent.
Fig 3: Installing Oil Pump Gasket
Courtesy of GENERAL MOTORS CORP.
NOTE: Refer to Fastener Notice in Cautions and Notices.
5. Install the oil pump bolts. Tighten in the sequence shown.

   Tighten:  Tighten the oil pump bolts to 12 N.m (9 lb ft).

Fig 4: Removing & Installing Oil Pressure Sensor
Courtesy of GENERAL MOTORS CORP.
6. Install the oil pressure sender.

   Tighten:  Tighten the oil pressure sender to 35 N.m (26 lb ft).

Fig 5: Removing & Installing Crankshaft Gear Bolt
Courtesy of GENERAL MOTORS CORP.
7. Install the oil pump collar.
8. Coat the lip of the front main oil seal with a small amount of clean engine oil, to aid in installation.
9. Install the front main oil seal.
10. Use the J 35268-A  to tap the front main oil seal into place. See Special Tools and Equipment .

    Ensure the front main oil seal if fully and evenly seated.

11. Install the crankshaft drive gear.
12. Install a new crankshaft drive gear bolt.

    Tighten:  Use the J 42098  to tighten the crankshaft drive gear bolt, while counterholding the crankshaft drive gear with the J 42065  to 250 N.m (184 lb ft).

13. Use the J 36660-A  to tighten the crankshaft drive gear bolt in the following sequence:

    Tighten: 

    1. The first pass rotate the crankshaft drive gear bolt 45 degrees.
    2. The second and the final pass rotate the crankshaft drive gear bolt an additional 15 degrees.

Fig 6: Locating Generator Mounting Bolt
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: The oil pump bolts must be re-tightened AFTER the generator mounting bolt has been tightened to specifications to allow for uniform compression of the oil pump gasket.
14. Temporarily mount the generator and install the generator lower mounting bolt (3).

    Tighten:  Tighten the generator lower mounting bolt (3) to 35 N.m (26 lb ft).

Fig 7: Installing Oil Pump Gasket
Courtesy of GENERAL MOTORS CORP.
15. Re-tighten the oil pump bolts. Tighten in the sequence shown.

    Tighten:  Tighten the oil pump bolts to 20 N.m (15 lb ft).

16. Remove the generator bolt and the generator.