Toyota 15103-31050 Rotor Subassembly Oil

To remove the liming chain cover, start by taking out the oil pipe mounting bolts and the oil pipe, discarding the two old oil pipe O-rings. Next, remove the oil pump cover bolts and the oil pump cover, followed by the oil pump drive rotor and driven rotor. Then, take out the oil pressure relief plug, valve spring, and valve from the oil pump cover. Clean all components with solvent and inspect for wear and damage, ensuring the oiled relief valve moves freely through its bore. Check the sliding surface of the oil pressure relief valve and the valve spring; if either is damaged, replace them as a set. Measure the clearance of the driven rotor-to-oil pump body, rotor side clearance, and rotor tip clearance with a feeler gauge, comparing the measurements to the specified standards. For installation, pry out the old crankshaft seal from the timing chain cover, apply multi-purpose grease or engine oil to the outer edge of the new crank seal, and carefully drive it into place. Lubricate the seal lip and apply petroleum jelly to the pump drive and driven rotors before positioning them in the timing chain cover with the pump marks facing out. Pack the pump cavity with petroleum jelly to help prime the pump, install the cover, and tighten the cover bolts to the specified torque. Lubricate the oil pressure relief valve with clean engine oil, insert the valve and spring into the pump cover, and screw in the plug, tightening it to the specified torque. Finally, install the timing chain cover, complete the installation in reverse order of removal, add oil, install a new filter, and run the engine to check for leaks.