Engine - Roaring Noise From Fan Clutch

Bulletin No.: 001/93
Issued: 1/11/93
Revised

Category
E

Applicable Model/s
1991-92 Navajo

Subject

ROARING NOISE FROM THE FAN CLUTCH

AFFECTED VINS

This bulletin applies to all 1991-92 Navajo models with a VIN of 4F2CU4*X*NUM06718 or lower.

This bulletin does not apply to 1991-92 models with a VIN equal to or greater than 4F2CU4*X*NUM06719.

DESCRIPTION





During cold starting some vehicles may experience a roaring noise from the fan clutch. The roaring noise is caused by a fully engaged fan clutch.

A modified fan clutch is now available as a replacement part. This new fan clutch does not fully engage during cold starting. As a result, the roaring noise is eliminated.

REPAIR PROCEDURE

If customer complains of excessive roaring during cold start:

1. Verify the fan is fully engaged and no slippage occurs.

2. If the fan is fully engaged, replace the fan clutch with the modified part.

Refer to Section E of the applicable Workshop Manual for removal and installation procedures.





PARTS INFORMATION

WARRANTY INFORMATION

(Applies to vehicles covered under warranty.)

Warranty Type Code: A
Customer Comment Code: 80
Damage Code: 9H
Part No. of Main Cause: ZZL4 15 150
Operation No: E0207XRX
Labor Hours: 0.5 Hrs.