SERVICE MANUAL UPDATE SEC. 6A ENGINE MECHANICAL-OIL PAN
SUBJECT: MANUAL UPDATE SECTION 6A ENGINE MECHANICAL (OIL PAN AND GASKET REPLACEMENT PROCEDURE)
VEHICLES AFFECTED: 1989-91 A-CAR W/2.5L (VIN CODE R)
The following Oil Pan and Gasket Replacement procedure updates and replaces the current procedure found in the 1989-91 A-car Service Manuals - Section 6A on the following pages, due to a new Labour Time Study.
Year Division/Carline Page ----- ----------------- ------- 1989 Chevrolet Celebrity 6A1-13 1990 Chevrolet Celebrity 6A1-20
1989 Pontiac 6000 6A1-l3 1990 Pontiac 6000 6A1-20 1991 Pontiac 6000 6A1-27
1989 Buick Century 6A1-13 1990 Buick Century 6A1-20 1991 Buick Century 6A1-27
1989 Oldsmobile Cutlass Ciera and Cutlass Cruiser 6A1-13 1990 Oldsmobile Cutlass Ciera and Cutlass Cruiser 6A1-20 1991 Oldsmobile Cutlass Ciera and Cutlass Cruiser 6A1-27
OIL PAN AND GASKET - REFER TO FIGURES 1 AND 2
Tools Required:
J 28467-A
Remove or Disconnect
1. Negative battery cable.
2. Air cleaner and duct assembly.
3. Serpentine belt.
4. Engine torque strut from engine bracket.
5. Two upper front A/C compressor bolts to mounting bracket.
6. Install J 28467-A.
7. Raise vehicle and suitably support. Refer to General Information (Section 0A).
8. Right front tire and wheel assembly. Refer to Tires and Wheels (Section 3E).
9. Right engine splash shield.
10. Exhaust pipe and converter.
11. Lower front A/C compressor mounting bolt and support brace.
12. Rear A/C compressor mounting bracket bolts.
13. Wire harness from bracket at transaxle.
14. Flywheel cover bolts.
15. Starter and support bracket, set aside.
16. Flywheel cover.
17. Engine support bracket bolts to engine.
18. Loosen transaxle mounting nuts.
19. Lower vehicle.
20. Raise front of engine about 75mm (3 inches) using J 28467-A.
21. Engine support bracket nuts to engine mount and frame assembly. Remove support bracket and mount. Refer to Frame and Underbody (Section 10-3).
22. Raise vehicle and suitably support. Refer to General Information (Section 0A).
23. Drain engine oil.
24. Using a jack stand, place a wood support along transaxle oil pan inside edge. Raise transaxle and engine assembly to normal sitting position using J 28467-A.
25. Oil pan retaining bolts.
26. Oil pan from engine block.
Clean Engine block and oil pan surfaces.
Install or Connect
1. Apply RTV sealer GM P/N 12345739 or equivalent.
2. Oil pan to engine block.
3. Oil pan retaining bolts.
Tighten Bolts to 10 N.m (89 in.lbs.).
4. Remove jack stand and wood support.
5. Lower vehicle.
6. Fill engine oil. Refer to Maintenance and Lubrication (Section 0B).
7. Nuts holding engine support bracket to engine mount and mount assembly to frame assembly, bracket and mount.
8. Lower front of engine.
9. Raise vehicle.
10. Transaxle mounting nuts.
Tighten Nuts to 50 N.m (37 ft.lbs.).
11. Engine support bracket bolts to engine.
Tighten Bolts to 50 N.m (37 ft.lbs.).
12. Flywheel cover.
13. Starter assembly and support bracket. Refer to Cranking System (Section 6D2) .
14. Flywheel cover bolts.
Tighten Bolts to 10 N.m (89 in.lbs.).
15. Wire harness to bracket at transaxle.
16. Rear A/C compressor mounting bracket bolts.
Tighten Bolts to 30 N.m (22 ft.lbs.)
17. Lower front A/C compressor mounting bolts and support brace.
Tighten Bolts to 25 N.m (18 ft.lbs.).
18. Exhaust pipe and converter.
19. Right engine splash shield.
20. Right front tire and wheel assembly. Refer to Tires and Wheels (Section 3E).
21. Lower vehicle.
22. Remove J 24867-A.
23. Upper front A/C compressor to mounting bracket bolts.
Tighten Bolts to 25 N.m (18 ft.lbs.).
24. Engine torque strut to engine bracket. Nuts to 56 N.m (41 ft.lbs.).
25. Serpentine belt.
26. Air cleaner and duct assembly.
Inspect:
Oil level - Leaks
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.
