See Figures 1, 2, 3, 4, 5 and 6
Only the 3.5L engine is equipped with a timing belt. It is recommended that the timing belt be inspected at 60,000 miles (96,000 km). If the belt is checked at the 60,000 mile (96,000 km) point and no wear is found, it is not necessary to replace the belt at this time. However the belt MUST be replaced at the 105,000 mile (168,000 km) mark.
Fig. Fig. 1: Do not bend, twist or turn the timing belt inside out. Never allow oil, water or steam to contact the belt
Fig. Fig. 2: Check for premature parting of the belt
Fig. Fig. 3: Check if the teeth are cracked or damaged
Fig. Fig. 4: Look for noticeable cracks or wear on the belt face
Fig. Fig. 5: You may only have damage on one side of the belt; if so, the guide could be the culprit
Fig. Fig. 6: Foreign materials can get in between the teeth and cause damage
Inspect both sides of the timing belt. Replace the belt with a new one if any of the following conditions exist:
Hardening of black rubber back side is glossy without resilience and leaves no indent when pressed with a fingernail.
Cracks on rubber backing.
Cracks or peeling of the canvas.
Cracks on rib root.
Cracks on belt sides.
Abnormal wear of belt sides. The sides are normal if they are sharp as if cut by a knife.
If none of these conditions exist, the belt does not need replacement, unless it is the 105,000 mile (168,000 km) service check. The belt MUST be replaced at this interval.
For removal and installation procedures, Refer to
Engine & Engine Overhaul