B4000 V6-4.0L SOHC (2005)
Drive Belt: Initial Inspection and Diagnostic Overview
DRIVE BELT INSPECTION
1. Verify the customer's concern by operating the engine to duplicate the condition.
2. Inspect to determine if any of the following mechanical concerns apply:
3. Inspect for drive belt cracking/chunking/wear.
4. If the concerns remain after inspection, determine the symptoms.
Under severe operating conditions (high temperature, low humidity), drive belt rib cracking can occur at less than 96,000 km (60,000 miles). Drive
belt rib cracking (cracks across grooves):
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is not a reason for concern.
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has no detrimental effect on drive belt performance. Cracks parallel to grooves are acceptable.
The drive belt is still perfectly functional until rib chunking occurs. Drive belt chunking is where the rubber material actually chunks out between the
cracks. The drive belt should be replaced if chunking occurs.
5. If the concern(s) remains after inspection, determine the symptoms.
