Alternator Belt - Noise Caused By Pulley Misalignment

89Chrysler08

Models

1989 AA, AC, AG, AH, AJ, AK, AL, AP, AS With 2.2L or 2.5L Engines


Subject

Alternator Belt Noise Caused By Pulley Misalignment


Index

COOLING


Date

May 1, 1989


No.

07-03-89

(C07-01-9)
P-1717
BODY CODE LEGEND

AA - SPIRIT/ACCLAIM AK - ARIES/RELIANT
AC - DYNASTY/NEW YORKER/LANDAU AL - OMNI/HORIZON
AG - DAYTONA AP - SHADOW/SUNDANCE
AH - LANCER/LeBARON GTS (4-DOOR AS - CARAVAN/VOYAGER
HATCHBACK) CARAVAN C/V
AJ - LeBARON (2-DOOR COUPE/CONVERTIBLE)


SYMPTOM/CONDITION

- "Chirping" or "snapping" noise being generated near the front of the engine while the engine is running.

- The alternator drive belt is missing or has "walked" partially off pulley.

The "snapping" noise sounds similar to a bad alternator bearing or electrical arcing. The noise and belt "walking" can be caused by alternator pulley misalignment.

DIAGNOSIS

CAUTION: EXTREME CARE SHOULD BE USED WORKING UNDER THE HOOD WITH THE ENGINE RUNNING.

If the noise is being generated near the front of the engine, a spray-type water bottle should be used to spray the grooved side of the alternator belt with water while the engine is running. If the noise subsides (and as the belt dries, the noise returns) the alternator pulley misalignment is likely causing the noise.

If the vehicle is to be subjected to subfreezing temperatures, the engine should be run for at least five minutes after this test to allow the belts to dry.
If the alternator belt was found to be missing or had "walked" partially off either or both the alternator and crank pulleys, then the alternator belt, alternator pulley and crank pulley should be inspected for any foreign material lodged in their grooves. If nothing is found, the belt "walking" is likely due to alternator pulley misalignment.

PARTS REQUIRED

1 Flat Washer P/N 6500299
1 Flat Washer P/N 6501752

Figure 1:

REPAIR PROCEDURE

This procedure outlines the correction of alternator pulley misalignment. Refer to Figure 1 for this procedure.
1. Loosen and remove the alternator pivot nut "A". Remove and discard the front washer "B".

2. Install flat washers "C" (P/N 6500299) and "F" (P/N 6501752) positioned as shown and loosely assemble the alternator pivot nut "A".

3. Loosen the adjusting screw locking nut "D".

4. Tighten the adjusting bolt "E" to increase the alternator belt tension to 100 lbs.

5. Tighten the adjusting screw locking nut "D" to 250 in.lbs. (28 N-m).

6. Center the inner front flat washer "C" and torque the alternator pivot nut "A" to 30 in.lbs. (41 N-m).
POLICY: Reimbursable within the provisions of the warranty.


TIME ALLOWANCE:
Labor Operation No. 07-20-10-90 . . . . . . . . . . . . . 0.3 Hrs.


FAILURE CODE: 68 - Noisy