Question 1

What precautions should be taken when handling the oil pressure relief valve and oil pump during replacement in 3.5L V6 engine on Chrysler Sebring?

Accepted Answer

If the oil pressure relief valve is damaged do not take out the oil pressure relief valve, spring, and the plunging of the oil pump; replace the oil pump in-toto. First, the crankshaft sprocket should be undid together with the oil pan and then with the oil pump pick-up tube. Following this, flip the cover over and undo the four bolts securing it to the back of the oil pump housing to release the inner and outer rotors, pay attention to the installed orientation that you will be required to reinstall in its proper place. Wash all the components as a flood in solvent and check the face of the rotors, the inner surface of the pump cover and the exterior surface of the oil pump housing to look for nicks, scratches or burrs and replace the set if get damaged. Check the oil pump cover for warpage to a straightedge by using the feeler gauge in this size: if beyond these limits, replace the pump. Check the thickness and diameter of the outer rotor and in case of any thickness or diameter being less than the standard size as provided, replace the pump; confirm the thickness of the inner rotor and in case it is thin size as provided, replace the pump. Place the outer rotor into the oil pump housing so that it will rest against one end while using an inside micrometer that will read at the hole at the other end of the pump housing; if the clearance is larger than the maximum allowable, then the pump should be replaced. Screw in the inner rotor and check the free space between the lobes of the inner and outer rotors, the pump should be changed if the gap is larger than the permissible one, check that the mark on the inner rotor should be oriented to the top. Place a straight-edge across the face of the oil pump assembly to check the other side clearance from the face of the oil pump housing to the rotors; if more than the limit then change the pump. For installation, prime the oil pump by pouring in some engine oil in the housing of the pump and then put on the pump cover with the bolts being tightened to the prescribed degree of turn. The gasket should be fitted to the engine block mating surface, the flat surfaces in the rotor should be aligned with those on the crankshaft, while the oil pump housing should be put on the engine block. Last of all, fit the pump to block bolts and tighten to recommended torque and the work is done in a sequence which is reverse of dismantling.

Question 2

How to remove and replace the oil pump in 2.7L V6 engine on Chrysler 300?

Accepted Answer

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.

OEM Chrysler Oil Pump

28 Oil Pumps found

Chrysler Oil Pump Part Number: 68127987AK

Chrysler Oil Pump Part Number: 68297857AM

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Chrysler Oil Pump Part Number: 68297857AC

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Chrysler Oil Pump Part Number: 4397746AB

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