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ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – Engine Noise Excessive – Drive Belt

Symptom Tree  t170

This is symptom tree t170
Cause Correction

Drive belt incorrect or not routed correctly

Verify the proper belt part number is installed. Verify the belt tensioner arm stops are in the proper orientation with the drive belt installed. Refer to Procedure 008-002 in Section 8 and the OEM service manual.
 

Poor drive belt condition

Refer to Procedure 008-002 in Section 8.
 

Accessory pulley is out of alignment

Verify the drive system pulley alignment with the Belt Alignment Laser Tool, Part Number 3163524, or equivalent.. Refer to Procedure 008-002 in Section 8.
 

Loss of belt tension

Refer to Procedure 008-080 in Section 8.
 
Last Modified:  24-Aug-2010
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