In this type of engine, the oil pressure relief valve cannot be taken out of the oil pump housing; if that is done, it is necessary to replace the oil pump assembly with a new one. It should be pointed out that on the Hemi engine the oil pump is available only in sets. First, remove the cable from the negative terminal of the battery after that, drain the engines cooling system. Subsequently, the timing chain cover and the
Oil Pan have to be pulled off. Next there is a bolt to be disconnected right from the pick-up tube assembly and can be put down from the path of oil pump, finally the mounting bolts of oil pump have to be pulled to separate the pump from the block of the engine. To fit, place the pump on the engine so that the rotor of the pump is in the proper relation the crankshaft drive, and tighten the bolts that hold the oil pump firmly into place while using the correct torque. A new O-ring is then placed on the stick of the oil pump pick-up tube; the stick is then joined to the pump and the bolt is tightened to the recommended measure of torque. The rest of the installation is performed on the reversal of the process of removal. Last, add the correct amount and type of engine oil to crankcase, change the oil filter, and add the correct type of fluid in the cooling system. Start the engine and ensure that there is sufficient oil pressure and also ensure that there is no oil leakage.