Power Steering Pump Drive Pulley Wobble - Part I

CONDITION:

1990 Grand Am and Grand Prix models equipped with a 2.3L Quad 4 or High Output Quad 4 engine built prior to engine number D041139, were assembled with a second design power steering pump drive pulley. Some of these pulleys may exhibit a noticeable wobble (side-to-side movement) while the engine is running.

CAUSE:

This condition is the result of greater than normal lateral run-out of the power steering pump drive pulley.

CORRECTION:

This condition can be corrected by installing a first design power steering pump drive pulley, part number 22532167. The first design pulley has been reinstated in 1990 Quad 4 and High Output Quad 4 production effective with engine number D041139.

PARTS INFORMATION:

Parts are currently available from GMSPO.

PULLEY DESIGN IDENTIFICATION:

First Design - 1987 through 1989: Pulley has solid face (no

holes) part number 22532167

Second Design - 1990: Pulley face has three (3) holes part
number 22545412.

1990 Grand Am and Grand Prix models equipped with a Quad 4 engine assembled with the second design pulley that exhibit a wobble condition, can be corrected by the following service procedure.

Figure 2:

SERVICE PROCEDURE:

Tools Required:

J 24420-B Puller
J 38343 Pulley Remover
J 36015 Pulley Installer

1. Position power steering pump aside to gain access to pulley. Refer to Figure 2.

2. Install forcing screw pilot J 38343-4 into pulley end of camshaft.

3. Install adapters J 38343-3 behind pulley one at a time while threading the 3/8" x 3-1/2" bolts included in J 38343 into them, through the holes in the pulley.

4. While holding J 38343-4 with a wrench, remove pulley with pulley remover J 38343.

5. Using tool J 36015 install new pulley, part number 22532167 onto end of intake camshaft.
6. Reposition and install power steering pump assembly, leaving adjustment bolts slightly loose.

7. Install power steering pump drive belt and tension as follows.

Figure 1:

ADJUSTING BELT TENSION:

Tool Required:

J 36018 Belt Tension Gage

1. Place gage on belt.

2. With pump adjusting bolts slightly loose, set belt tension to 500 newtons (110 pounds) by turning adjustment stud. Refer to Figure 1.
3. Tighten pump adjustment bolts to specifications noted in Figure 1.

WARRANTY INFORMATION:

Labor Operation: E8360

Labor Time 0.5 hours

Trouble Code 92