QuestionI am replacing the cam in this engine before i pulled the cam i aligned the timing marks on both gears and then i marked the position of the oil pump drive housing with yellow paint and then pulled it out of the block how critical is the position of the oil pump drive when reinstalling it in the block i understand it does not conrol timing and i pulled it as a whole unit thank you for your time
AnswerINSTALLATION
Inspect the cam lobes for wear.
Inspect the bearing journals for uneven wear pattern or finish.
Inspect the bearings for wear.
Inspect the distributor drive gear for wear.
If the camshaft thrust surface appears to have excessive wear, examine the oil pressure relief holes in the rear cam journal. The oil pressure relief holes must be free of debris.
Lubricate the camshaft with Mopar Engine Oil Supplement, or equivalent.
Carefully install the camshaft to prevent damage to the camshaft bearings Camshaft
Inspect thrust plate surfaces for excessive wear, position thrust plate and install retaining screws. Tighten screws to 24 N·m (18 ft. lbs.)
Install the timing chain, crankshaft sprocket and camshaft sprocket with the timing marks aligned.
Install the camshaft sprocket bolt / cup washer. Tighten the bolt to 68 N·m (50 ft. lbs.)
Install the timing case cover with a replacement oil seal Timing Case Cover Components Refer to Timing Case Cover Installation.
Install the vibration damper Timing Case Cover Components
Install the hydraulic valve tappets.
Install the cylinder head gasket with the numbers facing up.
Install the cylinder head and head bolts (Refer to cylinder head R&I in this section for torque values and tightening sequence)
Install the push rods.
Install the rocker arms and pivot and bridge assemblies. Tighten each of the capscrews for each bridge alternately, one turn at a time, to avoid damaging the bridge (Refer to Rocker Arms and Push Rods in this section)
Install the engine cylinder head cover.
Position the oil pump gear. Refer to Camshaft position sensor in the Component Removal/Installation section of Group 14, Fuel Systems.
Install the Camshaft position sensor and ignition coil rail. Refer to Camshaft position sensor in the Component Removal/Installation section of Group 14, Fuel Systems.
Install the serpentine drive belt and tighten to the specified tension (refer to Group 7, Cooling System for the proper procedure)
NOTE: During installation, lubricate the hydraulic valve tappets and all valve components with Mopar Engine Oil Supplement, or equivalent. The Mopar Engine Oil Supplement, or equivalent must remain with the engine oil for at least 1609 km (1,000 miles) The oil supplement need not be drained until the next scheduled oil change.
Install the A/C condenser and receiver/drier assembly, if equipped (refer to Group 24, Heating and Air Conditioning)
CAUTION: Both service valves must be opened before the air conditioning system is operated.
Install the radiator, connect the hoses and fill the cooling system to the specified level (refer to Group 7, Cooling System for the proper procedure)
Install the grille and fascia, if removed.
Connect negative cable to battery
