WORKHORSE CUSTOM CHASSIS
Service Manual
W SeriesWCC
SECTION
6.2
PAGE
54
Engine Mechanical
W Series Chassis
TOC
© 2006 WorkhorseCustom Chassis — All Rights Reserved
DRIVE BELT CHIRPING, SQUEAL, AND WHINE DIAGNOSIS
Diagnostic Aids
• A chirping or squeal noise may be intermittent due to moisture on the drive belts or the pulleys. It may be necessary to
spray a small amount of water on the drive belts in order to duplicate the customers concern. If spraying water on the
drive belt duplicates the symptom, cleaning the belt pulleys may be the probable solution.
• If the noise is intermittent, verify the accessory drive components by varying their loads making sure they are operated
to their maximum capacity. An overcharged A/C system, power steering system with a pinched hose or wrong fl uid, or a
generator failing are suggested items to inspect.
• A chirping, squeal or whine noise may be caused by a loose or improper installation of a body or suspension component.
Other items of the vehicle may also cause the noise.
• The drive belts will not cause a whine noise.
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