Fuel injection pump timing belt

FUEL INJECTION PUMP TIMING BELT

Service repair no - 12.65.51

Remove

1. Remove injection pump timing belt cover. See this section.
2. Remove camshaft timing belt upper front cover. See this section.
3. Remove front centre underbelly panel for access to crankshaft pulley bolt. See BODY, Exterior fittings.

4. Insert timing pin 18G 1523 through hole in gearbox mounting plate, hold pin in contact with flywheel.
5. Using assistance, rotate crankshaft clockwise until timing pin 18G 1523 can be felt to enter hole in flywheel.

CAUTION: Do not use camshaft gear, gear retaining bolt or timing belt to rotate crankshaft.

6. Check that camshaft gear timing mark is aligned with mark on back cover.

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

NOTE: Locking pin must be a sliding fit, if pin is tight, rotate pump shaft slightly using a socket on the nut until pin can be inserted correctly.

9. Check that camshaft gear timing mark is still aligned with mark on back cover.
10. If timing belt is to be refitted, mark direction of rotation on belt.
11. Loosen Allen bolt securing tensioner pulley to mounting plate. Move tensioner aside, tighten Allen bolt.
12. Remove injection pump timing belt.

CAUTION: Do not rotate camshaft or injection pump with belt removed. Ease timing belt from gears using fingers only. Metal levers may damage the belt and gears. Timing belts must be stored and handled with care. Store a belt on its edge with a radius greater than 50 mm. Do not use a belt which 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, (135,000 km) an existing belt should only be refitted if it has completed less than 42,000 miles, (65,000 km).