Oil Pump Installation

TOOLS REQUIRED 

• J35268A Camshaft/Front Main Seal Installer

1. Coat pump side of new oil pump gasket in crosshatched areas shown in illustration with a thin, even coating of anaerobic sealant Loctite 518® (or equivalent).

   IMPORTANT:  Do not cover and/or restrict gasket openings with excess sealant.

   Fig 1: Identifying Oil Pump Gasket Sealing Areas

   Courtesy of GENERAL MOTORS CORP.
2. Install oil pump gasket.
3. Install oil pump and align with the guide pins.
4. Apply thread sealant Loctite 242® (or equivalent) to oil pump bolts and install bolts.

   Torque: 

   Oil Pump Bolts: 9 N.m (80 in-lbs) 

5. Install oil pump collar.
6. Install front main oil seal. Coat lip of front main oil seal with a small amount of clean engine oil to aid in installation.
   Fig 2: Installing Front Crankshaft Oil Seal

   Courtesy of GENERAL MOTORS CORP.
7. Use Camshaft/Front Main Seal Installer J35268A to install front main oil seal.
8. Ensure that front main oil seal is fully and evenly seated.
9. Install crankshaft drive gear.
10. Install a new crankshaft drive gear bolt.

    Torque: 

    Crankshaft Drive Gear Bolt: 250 N.m (184 ft-lbs) +45° + 15° 

    Fig 3: Installing Crankshaft Drive Gear

    Courtesy of GENERAL MOTORS CORP.
11. Install oil pickup tube.

    Torque: 

    Oil Pickup Tube Bolts: 8 N.m (71 in-lbs) 

    Fig 4: Installing Oil Pump Pickup Tube & Oil Pan

    Courtesy of GENERAL MOTORS CORP.
12. Install oil pan. Refer to OIL PAN REPLACEMENT .
13. Release and pivot generator into place and install the generator lower mounting bolt.

    Torque: 

    Generator Mounting Bolts: 40 N.m (30 ft-lbs) 

14. Position A/C compressor and power steering pump bracket.
15. Install A/C compressor and power steering pump bracket bolts.

    Torque: 

    A/C Compressor Bracket Bolt: 40 N.m (30 ft-lbs) 

16. Install rear timing belt cover.
    Fig 5: Installing Rear Timing Belt Cover

    Courtesy of GENERAL MOTORS CORP.

    IMPORTANT:  The oil pump bolts must be re-tightened to the appropriate specifications AFTER the generator mounting bolts and the drive belt idler pulley for camshafts 3 and 4 have been tightened to specifications to allow for proper compression of the oil pump gasket.

17. Install and tighten drive belt idler pulley for camshafts 3 and 4 Re-tighten the oil pump bolts.

    Torque: 

    Oil Pump Bolts: 9 N.m (80 in-lbs) 

    Fig 6: Identifying Oil Pump Bolt Retightening Sequence

    Courtesy of GENERAL MOTORS CORP.
18. Install timing belt.
    Fig 7: Identifying Serpentine Belt Routing

    Courtesy of GENERAL MOTORS CORP.
19. Install air cleaner assembly.
20. Connect negative battery cable.

    Torque: 

    Battery Terminal Bolts: 17 N.m (13 ft-lbs) 

21. Fill cooling system. Refer to ENGINE COOLANT CHECK AND REPLACEMENT .