LUBRICATING AND MAINTENANCE
INSTRUCTIONS
CH 140 CHIPPER
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8.3.2.ADJUSTING THE BEARING
CLEARANCE
1. Remove the fastening bolts (M10) (7) and
the upper bearing housings (6).
2. Remove the grease from the bearing hous-
ing.
3. Lift the disk.
4. Bend the claw of the securing ring (3) out
from the notch on the axle nut and open
the axle nut.
5. Remove the spacer ring (3) if the bearing is at
the feeder side.
6. Measure the radial clearance on top of the
bearing between the rollers and outer ring
with a feeler gauge. The clearance should be
0.02–0.03 mm. Measure the clearance by
pushing the feeler gauge between the rollers
(point
A
, Fig. 16.) through the bearing and
then moving the gauge back and forth be-
tween the rollers and outer ring --- see Fig.
17. Do not force the feeler gauge through the
clearance.
7. If the clearance exceeds 0.03 mm, bend the
claw of the securing ring (2) out from the
notch on the axle nut (1).
8. The bearing is tightened by turning the axle
nut clockwise with a 70 mm or 2
3
/
4
” hook
spanner until the right clearance is achieved.
Do not tighten by hammering the axle nut.
9. Turn the axle nut clockwise until the notch is
aligned with the nearest claw of the securing
ring. Bend the claw into the notch. Do not
bend the claw that was bent earlier.
10.Lower the disk to the bearing housing.
11.Install the upper bearing housing and tight-
en the bolts (6) to 50 Nm.
12.Lubricate the bearing housing. An excessive
amount of grease causes overheating and
impairs lubrication.
4
3
5
6
2
1
Fig.15. Bearing, feeder side.
A
Fig.16. Push the feeler gauge between the
rollers and outer ring.
Fig.17. Measuring the clearance.
Fig.18. Tightening the bearing
