Oil pump - removal and refitting

Note: New oil pump and oil pick-up tube gaskets should be used when refitting.

Removal
1 With the engine removed, proceed as follows.

2 Remove the timing belt, crankshaft sprocket and thrustwasher.

3 Remove the sump.

4 Unscrew and remove the nut securing the oil strainer/pick-up tube to No 4 main bearing cap (see illustration).

28.4 Oil strainer/pick-up tube securing nut (arrowed) on No 4 main bearing
28.4 Oil strainer/pick-up tube securing nut (arrowed) on No 4 main bearing cap

5 Using a suitable Allen key, unscrew the two bolts securing the oil pick-up tube to the oil pump, and withdraw the oil strainer/pick-up tube. Recover the washers and gasket (see illustration).

28.5 Removing the oil pick-up tube from the oil pump
28.5 Removing the oil pick-up tube from the oil pump

6 Unscrew and remove the six securing bolts, and withdraw the oil pump over the front of the crankshaft. Recover the gasket.

Refitting
7 Commence refitting by prising the crankshaft front oil seal from the pump housing.

8 Prime the pump by injecting clean engine oil into it and turning it by hand.

9 Using a new gasket, fit the oil pump over the front of the crankshaft, ensuring that the central rotor engages with the flats on the crankshaft (see illustration).

28.9 Refitting the oil pump
28.9 Refitting the oil pump

Fit the securing
bolts, and using a straight-edge, ensure that the bottom face of the oil pump is aligned with the bottom face of the cylinder block before finally tightening the bolts.

10 Using a new gasket, fit the oil pick-up tube to the oil pump and secure with the two bolts.

11 Refit the oil strainer/pick-up tube securing nut to No 4 main bearing cap.

12 Refit the sump.

13 Fit the crankshaft front oil seal using a suitable tool.

14 Refit the thrustwasher, crankshaft sprocket and timing belt.

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