The oil pump is removed for replacement when its supply decreases, causing a constant drop in oil pressure in the engine lubrication system, as well as when oil leaks through the sealing surfaces of the pump housing and cylinder block. Only the pump assembly is supplied as a spare part, so this section only describes the removal and installation of the pump.
To repair the oil pump, a set of new spare parts is required, which are not available separately at retail. Therefore, if the pump fails, replace it as an assembly or contact a specialized service for repair.
1. Disconnect the wire from the terminal «minus» battery.
2. Drain the liquid from the cooling system (see «Coolant replacement»).
3. Remove accessory drive belts (see «Replacing accessory drive belts»).
4. Remove the power steering pump (see «Removal and installation of the power steering pump»).
5. Remove the timing belt...
6.... and tension roller (see «Replacing the timing belt»).
WARNING: After removing the timing belt, do not turn the crankshaft and camshafts, as the valves may be damaged by the pistons.
7. Remove the toothed pulley from the crankshaft shank.
8. Turn out two bolts of fastening of a water distribution pipe to the water pump.
NOTE: The collector has been removed for clarity.
WARNING: The water distribution pipe flange is sealed with a rubber ring. Replace this ring each time the joint is disassembled.
9. Turn out three bolts of fastening of an oil crankcase to the oil pump...
10.... nine bolts securing the oil pump to the engine block...
NOTES: Please note that the oil pump mounting bolts vary in length (bolts A are short, bolts B are long). For clarity, shown on the removed engine.
11.... and remove the oil pump assembly with the water pump.
NOTE: Shown with removed engine for clarity.
12. Remove the sealing gasket installed under the flange of the oil pump housing.
NOTE: Replace the oil pump gasket with a new one each time the joint is disassembled, as the old gasket may not seal the joint when reinstalled.
GOOD ADVICE: Replace the crankshaft front oil seal every time you remove the pump. «Replacing the crankshaft seals»).
13. Install the pump in the reverse order of removal, and tighten the bolts of its fastening evenly crosswise to a torque of 20 Nm.
14. Install all previously removed parts and fill in coolant, see «Coolant replacement»).
USEFUL ADVICE: When installing a new oil pump, we recommend replacing the oil filter element.