A/C Belt - Squeaking Noise After a Cold Start

Group
8

Number
9403

Model
4 Cyl.

Part Identifier
8725

June 9, 1994

Subject:

968 Air Conditioner Belt Noise

ATTENTION: Service Manager / Service Technician

This bulletin replaces Technical Bulletin Group 8, Number 9301, Book J, page 107.

Models Affected:

Model Year 1992 and 1993 968's (NP)

Concern:

Squeaking noise from A/C belt after a cold start.

General Information:

On 968 vehicles with air conditioning, the poly-rib belt may squeak following a cold start. The noise may occur for up to two minutes after cold start.

Repair Information:

In the event of complaints, either of the following belts may be installed to rectify the squeak noise.

Make Size Part Number
Dayco K6X1000 999 192 299 50
Gates K6X998 999 192 283 50





Repair Procedure: (Figure 1)

1. Belt replacement should be done on a cold engine (approximately 70° F).

2. Remove poly-rib belt and install either Dayco or Gates poly-rib belt.

3. When adjusting belt tension, the thickness of the belt must be taken into consideration. Using special tool 9201, set the tension of the poly-rib belt to the scale units shown in the chart below:

4. Belt Thickness Scale Value Link Rod
4.4 - 4.8 8.5 -
4.9 - 5.2 9.5 -
5.3 - 9.5 9.5 Add 1 turn

5. Operate the vehicle for 15 minutes or 15 miles and allow the engine to cool. Recheck belt tension and reinstall all covers.