4.7L Engine - Service Information: Overhaul RAM Pickup 2500

DISASSEMBLY

1. Remove oil pump cover screws and lift off cover plate.
2. Remove pump inner and outer rotors. NOTE: Once the oil pressure relief valve, cup plug, and pin are removed, the pump assembly must be replaced.
3. If it is necessary to remove the pressure relief valve, drive the roll pin from pump housing and remove cup plug, spring and valve.

ASSEMBLY

1. Wash all parts in a suitable solvent and inspect carefully for damage or wear.
2. Install inner and outer rotors
3. Install oil pump cover plate and install cover bolts and tighten them to 12 N.m (105 in. lbs.).
4. Prime oil pump before installation by filling rotor cavity with engine oil.
5. If oil pressure is low and pump is within specifications, inspect for worn engine bearings or other causes for oil pressure loss.

Scheme 244

Scheme 245

1. Position the oil pump onto the crankshaft and install one oil pump retaining bolt.
2. Position the primary timing chain tensioner and install three retaining bolts.
3. Tighten the oil pump and primary timing chain tensioner retaining bolts to 28 N.m (250 in. lbs.) in the sequence shown in illustration.
4. Install the secondary timing chain tensioners and timing chains. Refer to «CHAIN and SPROCKETS, Timing , Installation , 4.7L»(ref-457796-S29246556642012030200000) .
5. Install the timing chain cover. Refer to «COVER(S), Engine Timing , Installation , 4.7L»(ref-457796-S32975697962012030200000) .
6. Install the pick-up tube and oil pan. Refer to «PAN, Oil , Installation , 4.7L»(ref-457796-S30829834102012030200000) .