Jeep Engines - Oljeep

290 MOPAR PERFORMANCE PARTSTIMING CASE COVERThe timing case cover is provided with a seal and oil slingerto prevent oil leakage at the vibration damper hub.It is important that the timing case cover is properly alignedwith the crankshaft to prevent damage to the oil seal. Theoil seal may be replaced without removing the timing chaincover.Removal1.2.3.4.5.6.7.8.Remove the drive belt(s), engine fan and hub assembly,fan shroud, vibration damper, pulley and key. Refer toVibration Damper Removal, in this section, for theprocedure.Remove the A/C compressor and alternator bracketassembly, if equipped. Refer to the service manual foradditional information pertaining to the A/C system.Remove the oil pan-to-timing case cover bolts andcover-to-cylinder block bolts.Remove the timing case cover, front seal and gasketfrom the engine.Cut off the oil pan side gasket end tabs flush with thefront face of the cylinder block. Remove the gasket tabs.Clean the timing case cover, oil pan and cylinder blockgasket surfaces.Remove the crankshaft oil seal from the timing casecover.Remove the oil seal from the timing case cover.Installation1.2.3.4.5.6.7.Apply sealing compound (Mopar Gasket-In-A-Tube, orequivalent) to both sides of the replacement timing casecover gasket and position the gasket on the cylinderblock.Cut the end tabs off of replacement oil pan side gasketscorresponding to those cut off the original gasket.Cement the end tabs on the oil pan.Coat the front cover end tab recesses generously withRTV sealant (Mopar Gasket-In-A-Tube, or equivalent)and position the seal on the timing case cover. Applyengine oil to the seal-oil pan contact surface.Position the timing case cover on the cylinder block.Place a timing case cover alignment and sealinstallation tool in the crankshaft opening of the cover.Install the cover-to-cylinder block bolts and the oilpan-to-cover bolts.Tighten the cover-to-cylinder block bolts to 7 Nom (62in-lbs) torque and the oil pan-to-cover bolts to 13 Nom(11 ft-lbs) torque.8. Remove the cover alignment tool and position thereplacement oil seal on the tool with the seal lip facingoutward.9. .4pply a light film of Perfect Seal, or equivalent, on theoutside diameter of the seal.10. ]Lightly coat the crankshaft with engine oil.11. Position the tool and seal over the end of the crankshaftand insert a screw tool into timing case coveralignment and seal installation tool. Tighten the nutagainst the tool until the tool contacts the cover.12. Remove the tools and apply a light film of engine oilon the vibration damper hub contact surface of the seal.13. 'With the key inserted in the keyway in the crankshaft,install the vibration damper, washer and bolt. Lubricateand tighten the bolt to 108 Nom (80 ft-lbs) torque.14. Install the A/C compressor and alternator bracketassembly.15. Install the damper pulley, if removed. Tighten the boltsto 27 Nom (20 ft-lbs) torque.16. Install the engine fan and hub assembly. Install the fanshroud.17. Install the drive belt(s) and tighten to the specifiedtension. Refer to the service manual for the properprocedures.TIMING CHAIN AND SPROCKETSInstalllation of the timing chain with the timing marks of thecrankshaft and camshaft sprockets properly aligned assurescorrect valve timing. A worn timing chain will adversely affectvalve timing. If the timing chain deflects more than 1/2", itshould be replaced. The correct timing chain has 48 pins. Achain with more than 48 pins will cause excessive slack.Jeep Gear DrivesReplace conventional Jeep timing chain and gear sets andeliminate chain induced cam timing fluctuations with thisMopar Performance Parts dual idler gear drive camshaftcenterlining drive system. Rugged and durable for off-roadapplications. Fits all 4.0L, 4.2L, and 2.5L Jeep engines.P5249009RemovalJeep gear drives.1. Remove the drive belt(s).2. Remove the engine fan and hub (or Tempatrol fan)assembly.3. Remove the vibration damper pulley (V-belt drive only).4. Remove the vibration damper. Refer to VibrationDamper Removal, in this section, for the procedure.*.