21CA 251/301 M251EN2
EVERY 250 HOURS OF OPERATION (Monthly)
1
3
2
1. Make sure the roller is level.
2. Wipe clean around the level plug (2) and loosen it a
few turns. Oil should run out from the plug if oil
level is correct.
3. If required, top off via the filler plug (1) until oil runs
from the level plug (2). Wipe clean around the filler
plug before unscrewing it. Use transmission oil. See
Lubricant Specification.
A level plug is fitted on both sides of the
transfer gearbox. The level need only be
checked on one side.
Fig. 32 Level Control
1. Filler plug
2. Level plug
3. Drain plug
Check all the rubber elements (1), replace all the
elements if more than 25% of them on one side of the
drum are cracked deeper than 10 to 15 mm (0.4-0.6").
Use a knife, or similar tool, to check depth of cracks.
Check that the fastening bolts (2) are tightened.
Using a vernier gauge, measure the length of
the rubber element, including the mounting
plates. See separate workshop instructions if
the size is greater than 76 mm (3").
Check tightening torque of
bolted joints
28
25
20
1. Rear axle suspension (25) 434 Nm (320 ftlbs).
2. Steering pump against propulsion pump (20) 38 Nm
(28 ftlbs).
3. Engine suspension (28). Check that all bolts are
tightened, 90 Nm (66 ftlbs).
4. Wheel nuts (23). Check that all the nuts are tight,
550 Nm (406 ftlbs) tightening torque.
(The above applies only to new or replaced
components.)
23
Fig. 33 Drive unit
Fig. 34 Drum, vibration side
1. Rubber element
2. Fastening bolts
Transfer Gearbox -
Checking the Oil Level
2
1
CAUTION
CAUTION
Rubber elements and fastening
bolts - Checking
Max 76mm (3")
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