REVISED-SERVICING OIL FILTER ADAPTER AND/OR GASKET

VEHICLES AFFECTED: 89 C,H,E,A,N (ENG VINS C AND N)

A revised procedure has been developed for replacing the oil filter adapter and/or gasket. The revised methods do not require the removal of the timing cover.

This bulletin contains four separate and complete procedures for servicing the oil filter adapter and/or gasket on C/H, E, A and N cars with 3300/3800 engines.

C/H CAR SERVICE PROCEDURES: -------------------------- REMOVE ------ 1. Raise car.

2. Right side engine splash shield.

3. 4 Adapter mounting bolts.

4. Adapter, oil filter and connector.

5. Old gasket.

CLEAN

- Engine and adapter mounting surfaces-

INSTALL

1. New adapter gasket.

2. Adapter with oil filter and connector.

3. 4 Adapter mounting bolts. - Tighten adapter bolts to 33 N.m (24 ft. lbs.).

4. Engine splash shield.

5. Lower car.

6. Engine oil as needed.

E Car Service Procedure

Tools required: J35551 90 degree torque wrench J28733 Drive axle spindle remover J35315 Ball joint separator

Remove or Disconnect

1. Raise car.

2. Right front wheel and tire assembly.

3. Right front hub nut and washer.

4. Stabilizer link.

5. Cotter pin and nut from ball joint.

6. Ball joint from steering knuckle.

7. Right drive axle.

8. 4 Adapter mounting bolts.

9. Adapter, oil filter and connector.

10. Old gasket.

CLEAN

-Engine and adapter mounting surfaces -

Install or Connect

1. New adapter gasket.

2. Adapter with oil filter and connector.

3. 4 Adapter mounting bolts. - Tighten adapter bolts to 33 N.m (24 ft. lbs.).

4. Right drive axle.

5. Ball joint to steering knuckle.

6. Ball joint nut and cotter pin.

- Tighten ball joint to steering knuckle nut to 10 N.M (84 in. lbs.) using J35551 90 degree torque wrench. Tighten nut an additional 120 degrees. When tightening nut, a minimum torque of 50 N.m (37 ft. lbs) must be obtained. If not obtained, inspect for stripped threads. If threads are satisfactory, replace balljoint and knuckle. If required, turn the nut up to an additional 60 degrees to allow for installation of the cotter pin.

7. Stabilizer link. - Tighten link nuts to 17 N.m (13 ft. lbs.).

8. Right front hub nut and washer. - Tighten hub nut to 245 N.m (180 ft. lbs.).

9. Wheel and tire assembly.

10. Lower car.

11. Engine oil as needed.

A CAR SERVICE PROCEDURE

REMOVE

1. Raise vehicle.

2. 4 Adapter mounting bolts.

3. Adapter, oil filter and connector.

4. Old gasket.

CLEAN

- Engine and adapter mounting surfaces -

INSTALL

1. New adapter gasket.

2. Adapter with oil filter and connector.

3. 4 Adapter mounting bolts. - Tighten bolts to 33 N.m (24 ft. lbs.).

4. Lower car.

5. Engine oil as needed.

N CAR SERVICE PROCEDURE

Tools required: J28467 Engine Support Fixture J28468 Axle Shaft Remover J33008 Axle Shaft Remover J29330 Ball Joint Separator INSTALL ------- 1. Engine support fixture - J28467 per Service Manual.

REMOVE OR DISCONNECT

1. Raise car.

2. Right front wheel and tire assembly.

3. Right front hub nut and washer.

4. Cotter pin and nut from ball joint.

5. Ball joint from steering knuckle.

6. Right drive axle.

7. Front engine mount, strut bracket and rear engine mount.

8. Lower engine for necessary clearance.

9. 4 Adapter mounting bolts.

10. Adapter, oil filter and connector.

11. Old gasket.

CLEAN

- Engine and adapter mounting surfaces.

INSTALL OR CONNECT

1. New adapter gasket.

2. Adapter with oil filter and connector.

3. 4 Adapter bolts. - Tighten adapter bolts to 33 N.m) (24 ft. lbs.).

4. Raise engine.

5. Front engine mount, strut bracket and rear engine mount.

6. Right drive axle.

7. Ball joint to steering knuckle.

8. Ball joint nut and cotter pin. - Tighten ball joint to steering knuckle nut to 55 N.m (41 ft. lbs.) minimum torque - 65 N.m (50 ft. lbs.), maximum torque to install pin.

9. Right front hub nut and washer. - Tighten hub nut to 260 N.m (185 ft. lbs.).

10. Wheel and tire assembly.

11. Lower car.

12. Engine oil as needed.

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.