Mopar 53021622AF Pump-Engine Oil

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The early model replacement oil pumps may suffer from collapsed oil pressure relief valve and spring, leading to oil pressure problems. These pumps do not have a threaded plug but an expansion plug that seals off the oil pressure relief valve and its spring within the pump. Do consult a dealer parts department or other qualified repairer of automobiles for the correct oil pump. First, remove the primary timing chain as well as crankshaft sprocket in order to pull out the oil pump. However, it should be ensured that marks on crankshaft sprocket match those located on housing of the pump before they are disengaged from one another. This would be followed by removal of both: oil pan along with an oil pick up tube on it. Then gently take away oil pump housing by prying forward on dowel pins until pump is clear of engine block at front of engine or supported through bolts attaching pump to engine block. Once removed, examine all parts for wear or damage to them; especially certain front coverings which could then be cleaned using solvents for purposes of removing any residual particles contaminating these components. In case sliding surface or even valve spring holding back an this valve are spoilt, these ought to be replaced otherwise intact items left alone. By use of feeler gauge together with micrometer / dial caliper ensure you verify clearance between different parts pertaining to respective oils pumps before crosschecking measurements against specified clearance values; when any clearance becomes too big then whole assembly should be changed out entirely that's if some gap is beyond tolerable extent concerning its constituent components. Ensure there is petroleum jelly packed into the pump first prior its installation whereby all fasteners must be tightened up according torques given while assembling this device once again though this time including such additional elements as valves springs and washers alongside caps just above valves themselves so that latter ones stay in place after reassembling entire unit afterwards making sure each rotor comes into line with one of the crankshafts flats and finally putting these screws back into block or tightening until all tightening torques have been met as outlined by manufacturer instructions. The rest of installation takes place opposite to removal.

Do not remove the oil pressure relief valve, spring, and plunger from the oil pump. Replace the oil pump as one complete assembly if the oil pressure relief valve is damaged.

To remove the oil pump, first remove the bolt from the pick-up tube assembly and lower it away from the oil pump. Then, remove the oil pump mounting bolts and detach the pump from the engine block.

Position a straightedge across the face of the oil pump assembly and check the clearance between the pump surface and the rotors. If the clearance is greater than the limit, the pump should be replaced.

The oil pumps have an expansion plug instead of a threaded plug to seal the oil pressure relief valve and spring inside.

After installing the oil pump, fill the crankcase with the proper type and quantity of engine oil, change the oil filter, and refill the cooling system. Finally, run the engine and check for oil pressure and leaks.

The remainder of the installation follows the reverse order of removal.

Measure the clearance using a straightedge, feeler gauge, and micrometer, including cover flatness, outer rotor diameter and thickness, inner rotor thickness, outer rotor-to-body clearance, inner rotor-to-outer rotor tip clearance, and side clearances.

The oil pumps have an expansion plug instead of a threaded plug to seal the oil pressure relief valve and spring inside.

Prime the oil pump by filling the housing with engine oil.

After installing the oil pump, fill the crankcase with the proper type and quantity of engine oil, change the oil filter, and refill the cooling system. Finally, run the engine and check for oil pressure and leaks.