KC-246

Service Bulletin Details

Public Details for: KC-246

Mack chassis - equipped with a cummins 9 liter engine - serpentine belt excessively worn or damaged; fan belt shredding or fraying repeatedly


- 9999 -

Models from 9999
9999 CUMMINS L9
9999 MACK MACK 
12/23/21, 8:47 AM
Article
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Mack Chassis - Equipped With A Cummins 9 Liter
Engine - Serpentine Belt Excessively Worn Or
Damaged; Fan Belt Shredding Or Fraying
Repeatedly
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Internal Content
For a customer complaint regarding premature belt wear (fraying or
shredding):
1. Replace the belt tensioner arm.
Note: Cummins also offers an additional, optional idler pulley kit to
further minimize belt fatigue and noise. It is recommended that this kit
be installed on vehicles used in time-critical applications. See part
number below.
Part Information:
• Idler Kit, Cummins Part Number 5335096
• Belt - Refer to IMPACT
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12/23/21, 8:47 AM
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mack
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