Oil pump parts
1 – pulley; 2 – oil pump cover; 3 – inner rotor; 4 – circular section sealing gasket; 5 – outer rotor; 6 – oil pump housing; 7 – gasket; 8 – safety valve piston; 9 – spring; 10 – retainer; 11 – thrust ring
Removal
1. Remove the oil pan.
2. Unscrew the nuts and remove the oil receiver pipe.
3. Support the engine with a jack and remove the lower idler pulley, crankshaft auxiliary belt pulley, timing belt and crankshaft pulley.
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4. Remove 12 bolts and remove the oil pump from the engine.
5. Remove the two remaining bolts and remove the oil pump cover.
6. Secure the oil pump pulley in a vice with soft jaws and unscrew the pulley mounting nut. Remove the inner rotor of the oil pump.
7. Clean the mating surfaces of the oil pump and cylinder block from traces of the old gasket.
8. Remove the safety valve retaining ring and take out the retainer, spring and piston.
Examination
1. Thoroughly clean all oil pump parts and check their condition.
2. Check the condition of the safety valve piston and spring. If there is wear or damage, the piston and spring must be replaced as a set.
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3. Using a feeler gauge blade, check the gap between the inner and outer rotor teeth...
4....and also between the outer rotor and the oil pump housing.
Installation
Location of oil pump cover gasket and outer rotor in oil pump housing
(The material was taken from a resource: Toyotaman.ru)
1. Using a screwdriver, remove the old oil pump rotor seal and install a new seal.
2. Replace the front crankshaft oil seal.
3. Install the oil pump cover seal and the oil pump outer rotor into the groove of the oil pump housing.
4. Lubricate the shaft and install the inner rotor into the oil pump cover, then install the pulley and secure with the nut, tightening it to the required torque.
5. Install the cover onto the oil pump housing and secure with two long bolts.
6. Lubricate the relief valve piston with clean engine oil and install all valve components into the oil pump housing.
7. Install a new oil pump gasket onto the cylinder block.
8. Install the oil pump onto the cylinder block and secure with bolts.
9. Further installation is carried out in the reverse order of removal. Fill the engine with oil to the required level.