Timing Belt - Removal

TIMING BELT






CAUTION: The 4.0L is NOT a freewheeling engine. Therefore, the valve train rocker assemblies must be removed before attempting to rotate either crankshaft or camshafts independently of each other.

1. Disconnect and isolate the negative battery cable.
2. Remove the front timing belt cover Engine Timing Cover(s) - Removal.
3. Mark belt running direction, if timing belt is to be reused.

CAUTION: When aligning timing marks, always rotate engine by turning the crankshaft. Failure to do so will result in valve and/or piston damage.

4. Rotate engine clockwise until crankshaft (10) mark aligns with the TDC mark on oil pump housing (9) and the camshaft sprocket (2, 7) timing marks (1, 8) are aligned with the marks on the rear cover.
5. Raise and support the vehicle.





6. Remove bolt (2) and reposition oil cooler hose (1).





7. Remove the timing belt tensioner (12).
8. Lower vehicle.
9. Remove the timing belt (4).
10. Inspect the tensioner for fluid leakage.
11. Inspect the pivot and bolt for free movement, bearing grease leakage, and smooth rotation. If not rotating freely, replace the arm and pulley assembly.










12. When tensioner is removed from the engine it is necessary to compress the plunger into the tensioner body. CAUTION: Index the tensioner in the vise the same way it is installed on the engine. This ensures proper pin orientation when tensioner is installed on the engine.

a. Place the tensioner into a vise (1) and SLOWLY compress the plunger. Total bleed down of tensioner should take approximately two minutes.
b. When plunger is compressed into the tensioner body install a pin (2) through the body and plunger to retain plunger in place until tensioner is installed.