944 S L4-2479cc 2.5L DOHC (1987)
1
Condition:
Cracks at base of teeth.
Cause:
Improper (too loose) belt tension.
Correction:
Replace belt and set to correct tension.
Remarks:
With belt installed, this condition is not easily seen. Bend the belt outward or if removed, bend belt. Use caution not to kink belt.
2
Condition:
One or more teeth cracked or broken. Teeth may be partially or completely broken out.
Cause:
Improper (too loose) belt tension or foreign objects in the belt. Also damaged belt wheel teeth or a seized belt tensioner roller.
Correction:
Replace belt and set to correct tension. Check for and remove foreign objects and replace damaged gear wheels or seized belt
tensioning roller.
3
Condition:
Teeth shaved off or cracked at base.
Cause:
Improper (too loose) belt tension.
Correction:
Replace belt and set to correct tension.
Remarks:
By applying thumb pressure on the teeth in the direction of curved arrows, the base cracks can be more easily detected.
4
Condition:
Front edge of belt frayed.
Cause:
Through improper (too loose) belt tension, the belt edges rub against the belt wheel shields.
Correction:
Replace belt and set to correct tension.
5
Condition:
Crack in edge of tooth.
Cause:
Improper (too loose) belt tension.
Correction:
Replace belt and set to correct tension.
Remarks:
This condition can be seen by applying thumb pressure on the edge of the tooth.
6
Condition:
Mechanical damage to the backing of the toothed belt. This condition can also occur on the edge of the belt.
Cause:
Foreign objects.
Correction:
Check for and remove foreign objects, replace belt, and set to correct tension.
7
Condition:
- Front edge of belt glazed.
-
Belt runs up on edge of water pump pulley.
-
Belt shredded lengthwise.
-
Belt not running properly on tensioning roller.
Cause:
Belt tensioning roller out of alignment.
Correction:
Refer to Technical Bulletin Group 1, No. 8502 dated April 26, 1985 for modification of the oil pump housing. Replace belt and
set to correct tension.
8
