Cylinder head gasket (page 3 of 7)

10. Loosen but do not remove 4 bolts securing injection pump timing belt camshaft gear to hub.
11. Insert locking pin 18G 1717 through hole in injection pump drive gear and into hole in mounting plate.

CAUTION: Locking pin 18G 1717 must be a sliding fit. If difficulty is experienced, rotate pump hub using a socket on hub nut until pin can be inserted.

12. Check that timing marks on camshaft gear and back cover are still aligned.

CAUTION: If drive belt is to be refitted, mark direction of rotation on belt.

13. Loosen Allen bolt securing tensioner pulley, move tensioner away from belt and tighten Allen bolt.
14. Remove injection pump timing belt.

CAUTION: Do not rotate camshaft or injection pump with timing belt removed. Ease timing belt from gears using fingers only, metal levers may damage belt or gears. Store a belt on its edge with a radius greater than 50 mm. DO NOT use a belt that has been twisted or bent double as this can fracture the reinforcing fibres. Do not use an oil contaminated belt. Although the belt has a service life of 84,000 miles (65,000 km) an existing belt should only be refitted if it has completed less than 42,000 miles (65,000 km).

15. Remove and discard injection pump timing belt camshaft gear bolt.
16. Remove camshaft gear.

17. Remove crankshaft pulley bolt.
18. Remove crankshaft pulley.
19. Noting their fitted positions, remove 6 bolts securing camshaft timing belt lower cover.
20. Remove lower cover.

21. Remove camshaft timing belt tensioner access plug from timing belt rear cover.
22. Loosen but do not remove Allen bolt securing tensioner pulley.
23. Screw timing belt tensioner retractor tool 18G 1719 into timing belt tensioner.
24. Tighten nut on tool 18G 1719 until belt tension is released.