Only the pump assembly is supplied as spare parts, therefore this section describes only the removal and installation of the pump. The work is shown on the example of the A16 XER engine, on other engines the pump is removed using almost the same techniques.
To repair the oil pump, you need a set of new spare parts, which are not available separately at retail. Therefore, if the pump fails, replace it as a whole or contact a specialized service for repair.
You will need: all the tools needed to remove the accessory and timing belts, the right powertrain suspension support, as well as a TORX T30 key and a TORX E12 socket head.
1. Disconnect the wire from the negative terminal of the battery.
2. Drain the cooling system (see Replacing the coolant).
3. Remove the accessory drive belt (see Replacement of auxiliary drive belt).
4. Remove the right powertrain mount..
5. …and the bracket for attaching it to the engine (see Replacing the powertrain suspension mounts).
6. Remove the crankshaft pulley…
7. …tension roller of the auxiliary drive belt…
8. …and the lower cover of the timing drive (see Replacing the timing belt).
9. Remove the timing belt intermediate roller by unscrewing its mounting bolt…
10. …timing drive belt…
Caution! After removing the timing belt, do not turn the crankshaft or camshafts, as the pistons may damage the valves.
11. ...and the timing belt tension roller, having unscrewed its mounting bolt (see Replacing the timing belt).
12. Remove the toothed pulley from the crankshaft end.
13. Remove the two bolts securing the water distribution pipe to the water pump.
Note: For clarity, the cat collector has been removed.
Caution! The flange of the water distribution pipe is sealed with a rubber ring. Replace this ring each time the connection is disassembled.
14. Remove the three bolts securing the oil pan to the oil pump…
15. …nine bolts securing the oil pump to the engine cylinder block…
Notes: Please note that the oil pump mounting bolts vary in length (bolts A short, bolts B long). For clarity, shown on a removed engine.
16. …and remove the oil pump assembly with the water pump.
Note: Shown with engine removed for clarity.
17. Remove the sealing gasket installed under the oil pump housing flange.
Note: Replace the oil pump gasket with a new one each time the connection is disassembled, as the old gasket may not provide a tight seal when reinstalled.
Note: Replace the front crankshaft oil seal whenever the pump is removed (see Replacing crankshaft seals).
18. Install the pump in the reverse order of removal and tighten its mounting bolts evenly crosswise to a torque of 20 N·m (2.0 kgf·m).
19. Install all previously removed parts and fill with coolant (see Replacing the coolant).
Note: When installing a new oil pump, we recommend replacing the oil filter element.
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