RATTLE DUE TO LOOSE AIR PUMP TORQUE / PULLEY BOLTS

MODELS AFFECTED: ALL 1983 AND 1984 PASSENGER CARS EQUIPPED WITH A.I.R. SYSTEMS

A rattling noise from the engine compartment may be experienced due to loose A.I.R. pump pulley attaching bolts.

The following procedure must be used to correct this condition:

1. Remove the drive belt from the A. I. R. pump pulley.

2. Remove three (3) A. I. R. pump pulley attaching bolts and discard.

3. Inspect and remove any foreign material from the pulley and the pulley mounting surface on the pump.

4. Replace the pump and/or pulley if they have been damaged. (Elongated holes or stripped threads.)

5. Replace the pulley using three (3) bolts, P/N 14063759. Use torque wrench to torque all three (3) bolts to 14 N.m (124 in. lbs.).

6. Immediately recheck the bolts to insure they have not lost torque.

7. If specified torque cannot be reached, inspect pump threads for stripping and replace as necessary.

8. Replace and retension the belt.

Use applicable labor times.

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.