Cherokee 4WD LHD L6-4.0L VIN S (2001)
weighted arm away and allow the plunger to rise to the normal position.
6. Adjust the nose of the ram to align the pointer with the SET mark on the scale of the tester and tighten the hex nut.
7. Slowly swing the weighted arm onto the push rod.
8. Rotate the cup by turning the handle at the base of the tester clockwise one revolution every 2 seconds.
9. Observe the leak-down time interval from the instant the pointer aligns with the START mark on the scale until the pointer aligns with the 0.125
mark. A normally functioning tappet will require 20 - 110 seconds to leak-down. Discard tappets with leak-down time interval not within this
specification.
INSTALLATION
Retain all the components in the same order as removed.
It is not necessary to charge the tappets with engine oil. They will charge themselves within a very short period of engine operation.
1. Dip each tappet in Mopar Engine Oil Supplement, or equivalent.
2. Use Hydraulic Valve Tappet Removal/Installation Tool to install each tappet in the same bore from where it was originally removed.
3. Install the cylinder head.
4. Install the push rods in their original locations.
5. Install the rocker arms and bridge and pivot assemblies at their original locations. Loosely install the capscrews at each bridge.
6. Tighten the capscrews alternately, one turn at a time, to avoid damaging the bridges. Tighten the capscrews to 28 Nm (21 ft. lbs.) torque.
7. Pour the remaining Mopar Engine Oil Supplement, or equivalent over the entire valve actuating assembly. The Mopar Engine Oil Supplement, or
equivalent must remain with the engine oil for at least 1,609 km (1,000 miles). The oil supplement need not be drained until the next scheduled oil
change.
8. Install the cylinder head cover.