Camshaft rear oil seal (page 3 of 6)

16. Remove Allen bolt from belt tensioner, remove tensioner.
17. Remove 3 bolts securing timing belt back plate, remove backplate.
18. Fit original injection pump timing belt camshaft gear bolt to camshaft.

CAUTION: Do not tighten bolt and ensure camshaft does not rotate.

19. Screw body of tool 18G 1476 into camshaft rear oil seal.
20. Tighten centre screw of tool 18G 1476 and extract oil seal.
21. Remove and discard original camshaft gear bolt.

CAUTION: Ensure camshaft does not rotate.

Refit

1. Thoroughly clean the oil seal recess and running face of camshaft.
2. Smear running face of camshaft and sealing lip of oil seal with clean engine oil.
3. Apply smear of grease to periphery of oil seal recess and oil seal.

4. Ensure tool 18G 1716 is clean.

CAUTION: Ensure that when fitted ’open’ side of seal faces inwards.

5. Drift oil seal into recess using tool 18G 1716; ensure that seal is fully located in recess.
6. Clean timing belt back plate mating faces.
7. Fit back plate to engine, fit bolts and tighten to 8 Nm.
8. Clean tensioner pulley.
9. Fit tensioner pulley to gearbox mounting plate locating dowel, fit but do not tighten Allen bolt.
10. Clean camshaft gear.

CAUTION: If the sintered gear has been subjected to prolonged oil contamination, it must be soaked in a solvent bath and thoroughly washed with solvent before refitment. Because of the porous construction of the sintered material, oil impregnated in the gear will emerge and contaminate a new belt. If injection pump timing belt shows signs of oil contamination, renew belt. See this section.