Technical data

6. Timing Gears and Injection Pump Gear
Check each gear for incorrect tooth contact, wear and damage. Replace if defective. Also check
the Oldham's coupling groove at the rear end of the injection pump camshaft for faults.
7. Camshaft
Measure the clearance between the camshaft
journals and cylinder block. If the clearance is
excessive, replace the camshaft or the cylinder
block.
If the cam surface is damaged or the cam lobe is
worn over the service limit, replace the
camshaft.
8. Fuel Injection Pump Camshaft
If the camshaft cam surface is badly worn or
damaged, or if the Oldham's coupling is
damaged, replace the camshaft.
9. Tappet
Check the bottom of tappets for cracks, spalling and nicks. Replace a tappet if it is seriously
defective.
Check the tappet to cylinder block clearance. If the clearance exceeds the specified value, replace
the tappet.
10. Tachometer Drive Unit
Check the gear and shaft for wear and damage. Also check the 0ring for damage. This unit is
generally not used for a mechanical tachometer connection.
REASSEMBLY
CAUTION: CLEAN EACH PART SUFFICIENTLY. CLEAN OIL HOLES, SLIDING
SURFACES AND ROTATING PARTS CAREFULLY.
BEFORE ASSEMBLING, APPLY ENGINE OIL TO ALL SLIDING AND ROTATING PARTS SUCH
AS BEARINGS AND CYLINDER INNER WALLS.
REPLACE GASKETS, PACKINGS AND OIL SEALS WITH NEW ONES. REUSE OF THESE PARTS
IS NOT PERMITTED.
APPLY SEALANT TO GASKETS AND PACKINGS AND TO THE SPECIFIED SEALING POINTS.
OBSERVE TIGHTENING TORQUE AND SEQUENCE WHERE SPECIFIED. IN OTHER PARTS
TIGHTEN TO THE GENERAL TORQUE SPECIFICATION FOR THE BOLT SIZE.
CHECK CLEARANCES AND END PLAYS WHEN INSTALLING.