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(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 (9) Observe the leak-down time interval from the instant the pointer aligns with the START mark on 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 (1) Dip each tappet in Mopar t Engine Oil Supple- ment, or equivalent. (2) Use Hydraulic Valve Tappet Removal/Installa- tion Tool to install each tappet in the same bore from (3) Install the cylinder head (Refer to 9 - ENGINE/ CYLINDER HEAD - INSTALLATION). (4) Install the push rods in their original locations. assemblies at their original locations. Loosely install (6) Tighten the capscrews alternately, one turn at a time, to avoid damaging the bridges. Tighten the (7) Pour the remaining Mopar t Engine Oil Supple- ment, or equivalent over the entire valve actuating t Engine Oil Supplement, or equivalent must remain with the engine oil for at (8) Install the cylinder head cover (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - INSTALLATION). PISTON & CONNECTING ROD DESCRIPTION The pistons (Fig. 56) are made of a high strength aluminum alloy, the piston skirts are coated with a STANDARD PROCEDURE - PISTON FITTING (1) To correctly select the proper size piston, a cyl- inder bore gauge, capable of reading in 0.003 mm (2) Measure the inside diameter of the cylinder bore at a point 49.5 mm (1-15/16 inches) below top of (3) The coated pistons will be serviced with the piston pin and connecting rod pre-assembled. The Fig. 55 Leak-Down Tester 1 - POINTER Fig. 56 Piston and Connecting Rod Assembly TJ ENGINE 4.0L 9 - 111 HYDRAULIC LIFTERS (Continued) |