Execution order
1. Remove the camshaft drive belt and vibration damper with the crankshaft gear (see paragraphs 2–5 of subsection 3.2.2.7).
2. Remove the oil pan (see subsection 3.1.2.13).
3. Remove gear wheel 6 of the camshaft (see Fig. Flywheel, crankshaft, oil pump), unscrewing the bolt that holds it in place.
4. Remove the rear cover 7 of the camshaft drive (see Fig. Camshaft Drive Parts), unscrewing the bolts that secure it.
5. Bend back the ends of the lock washers and unscrew the two bolts securing the oil pump receiver to the block.
6. Bend back the ends of the lock washers and unscrew the two bolts securing the receiver to the oil pump. Remove receiver 12 and gasket 13 (see Fig. Flywheel, crankshaft, oil pump).
7. Loosen the oil pump mounting bolts. Remove pump 1 and gasket 2.
8. Loosen the pump cover mounting screws and remove the cover.
9. Unscrew the pressure reducing valve.
10. Clean the pump parts from dirt and wash them in gasoline. Inspect the pump parts. If there are signs of wear on the cover, it must be replaced. The pump gears can only be replaced with new ones in pairs. Replace gasket 2 of the pump and gasket 13 of the receiver, front oil seal 16 of the crankshaft.
11. Assemble and install the oil pump in the reverse order. Before pressing in, lubricate the oil seal with engine oil. If a recess has formed on the crankshaft in the place where the oil seal worked, you need to press the oil seal deeper so that the working edge of the oil seal works on the crankshaft behind the recess. Replace the lock washers of the pump and receiver mounting bolts. There is a triangular mark on the pump gears; it should be directed toward the pump cover. Tighten the pump mounting bolts with the following torque: short bolts and stand - 10 N·m (1.0 kgf·m); long bolts – 20 N·m (2.0 kgf·m). Tighten the receiver mounting bolts to 10 N·m (1.0 kgf·m).