MAINTENANCE SCHEDULE & CHECKLISTS
4012/16 Diesel, February 1997 4
4
EVERY 250 HOURS OR EVERY 6 MONTHS
BEARINGS AND BELTS (COVRAD
RADIATOR)
Remove the mesh guard around the fan
belts, grease the fan bearings (2) and jockey
pulley bearings (4) Fig. 32, using high
melting point lithium LM grease at greasing
points (5).
Check the tension and wear of the fan belts.
Using moderate thumb pressure midway
between the crankshaft and fan pulley, a
total deflection of 12.5 mm (1/2") is
satisfactory.
If the fan belts are worn, the complete set
should be replaced and the fan pulley to
crankshaft pulley alignment checked.
If adjustment is found necessary, slacken
the two adjusting screws (3) and using a tube
extension (6) fitted over either the fan or
jockey pulley adjusting tag (1), move
outwards to tension the belts and inwards to
slacken the belts. Having set the tension of
the belts, tighten the adjusting screws (3)
and refit the fan belt guard.
FAN BEARINGS AND BELTS
(BEARWARD RADIATOR)
Remove the mesh guard around the fan
belts. The fan bearings (1) and jockey pulley
bearings (2) do not need greasing as these
are of the pre-packed type.
Check the tension and wear of the fan belts.
Using moderate thumb pressure midway
between the crankshaft and fan pulley (1), a
total deflection of 12.5 mm (1/2") is
satisfactory (see Fig. 33). If one or more fan
belts are faulty, a complete set must
always be fitted, and the fan pulley to
crankshaft pulley alignment checked. If
adjustment is found necessary slacken the
locking bolts (3) and adjust nut (4) either way
retighten locking bolts (3) and adjusting nut
(4).
WARNING
DISCONNECT
BATTERIES OR ANY
OTHER MEANS OF STARTING THE
ENGINE.
Fig. 32
1
2
3
4
5
6
Fig. 33
1
2
3
4
