Jeep Engines - Oljeep

l- ‘ T - l~~ ~68 MOPAR PERFORMANCE PARTSCleaning and Inspection1.2.3.4.5.6.Clean all the components with cleaning solvent and usecompressed air to blow out the oil passages in therocker arms and pushrods.Inspect the pivot surface area of each rocker arm.Replace any that are scuffed, pitted, cracked orexcessively worn.Inspect the valve stem tip contact surface of each rockerarm and replace any rocker arm that is deeply pitted.Inspect each pushrod end for excessive wear andreplace as required. If any pushrod is excessively wornbecause of lack of oil, replace it and inspect thecorresponding hydraulic tappet for excessive wear.Inspect the pushrods for straightness by rolling themon a flat surface or by shining a light between thepushrod and the flat surface.A wear pattern along the length of the pushrod is notnormal. Inspect the cylinder head for obstruction if thiscondition exists.Installation1.2.3.4.5.Lubricate the ball ends of each pushrod with MoparSuper Oil Conditioner (or equivalent) and installpushrods in their original locations. Ensure that thebottom end of each pushrod is centered in the tappetplunger cap seat.Lubricate the area of the rocker arm that the pivot contactswith Mopar Super Oil Conditioner (or equivalent) andinstall rocker arms, pivots and bridge above each cylinderfrom where they were originally removed.Loosely install capscrews through each bridge.At each bridge, tighten the capscrews alternately, oneturn at a time, to avoid damaging the bridge. Tightenthe capscrews to 26 Nom (19 ft-lbs) torque.Install the cylinder head cover (see Cylinder HeadCover Installation, ‘Cylinder Head’ section of thischapter, for the procedure).PUSHRODSThe valve train of the Jeep 2.SL engine is oiled through thepushrods. Jeep engine pushrods (all Jeep engines) are hollowso that oil can pass through them to oil the valve train.Warning! Because the 2.SL engine valve train is oiledthrough its hollow pushrods, SOLID SHAFT PUSHRODSCANNOT BE USED.Standard Length PushrodThis is a fully assembled, stock diameter hydraulicpushrod. It is hollow to provide valve train oiling (same asproduction pushrod). Factory approved and engineered forrebuild or repairs. For all 2.SL and 1987-2000 4.0Lengines. (Sold individually.)P45 292 19Standard length pushrod.Standard Length Pushrod SetComplete set of factory original pushrods for 2.5L engines(only). These are fully assembled, stock diameterpushrods. They are hollow to provide valve train oiling(same as production). Complete set of eight (8).P4S29674Standard length pushrod set.HYDRAULIC LIFTERS (TAPPETS)Note: The following removal and installation procedures canbe performed with the cylinder head installed on the engine.Hydraulic TappetFor use with general purpose, high performance hydrauliccamshafts. Can be used as a production replacement.(Sold individually.)P4529220Removal1.2.3.4.5.Hydraulic tappet.Remove the cylinder head cover (refer to CylinderHead Cover Removal, ‘Cylinder Head’ section of thischapter, for the procedure).Remove the bridge and pivot assemblies and rockerarms by removing the two capscrews at each bridge.Alternately loosen each capscrew one turn at a time toavoid damaging the bridge.Remove the pushrods. Place them on a workbench inthe same order as removed to facilitate installation intheir original locations.Remove the tappets through the pushrod openings inthe cylinder head with a hydraulic valve tappetremoval/installation tool (Figure 2-7 1). Place them ona workbench in the same order as removed to facilitateinstallation in their original locations.Inspect the tappets for wear. If worn, check the camlobes for wear. Replace if wear is found.