Expedition 2WD V8-281 4.6L VIN W EFI (1997)
Drive Belt: Component Tests and General Diagnostics
Belt Tension
NOTE: Drive belt tension is not adjustable.
The drive belt tensioner automatically adjusts drive belt tension.
Check the automatic drive belt tensioner:
1. With the engine off, check for proper drive belt routing. Service as required.
2. Rotate the drive belt tensioner and check for a binding or frozen condition. Replace components as required.
Cracking/Chunking/Wear
V-Ribbed Belt With Cracks (Acceptable)
V-Ribbed Belt With Chunks Of Rib Missing (Not Acceptable)
Under severe operating conditions (high temperatures, low humidity), drive belt rib cracking can occur at less than 48,000 km (30,000 miles). Drive belt
rib cracking has no effect on belt performance. Drive belt "chunking" describes a condition when the rubber material actually chunks out between the rib
cracks. The drive belt must be replaced if chunking occurs.
Drive Belt Misalignment
CAUTION: Incorrect drive belt installation will cause excessive drive belt wear and may cause the drive belt to come off the drive pulleys.
Non-standard replacement drive belts may track differently or improperly. If a replacement drive belt tracks improperly, replace it with an original
equipment drive belt to avoid performance failure or loss of belt.
