CH 160
18
8.PERIODIC MAINTENANCE
Always disengage the PTO and stop the
tractor and chipper fully before mainte-
nance or repair work.
Ensure that the disk is fully stopped be-
fore inserting anything inside the feed
chute.
Lock the disk before maintenance or re-
pairs.
Park the chipper on hard, level ground to
avoid it falling over.
Wear protective gloves when handling
knives or anvils.
WARNING!
8.1.LUBRICATING THE BEARINGS
D
The bearings are lubricated at the factory, and a similar
lubricant should be used for subsequent lubrication
(Shell Alvania Grease R 3. or Kendall L427). An
excessive amount of grease causes overheating and
impairs lubrication.
D
Lubricate the bearings every 200 working hours or at
least once a year.
1. Open the upper bearing housing --- see bearing
housing assembly drawing, Fig. 28.. Remove old
grease as carefully as possible and replace it with new
grease. Do not fill the bearing housing with grease.
2. Install the upper bearing housing and tighten to 50
Nm.
8.2.LUBRICATING THE PTO SHAFT
D
Lubricate the PTO shaft prior to operation and
regularly, as shown in Fig. 15..
D
Lubricate the inner surface of the PTO shaft, accessed
via the outer profile tube.
D
Lubricate the shield tubes in wintertime to prevent
them from freezing and sticking.
Lubricate the shield
tubes in wintertime to
prevent them from
freezing and sticking
Swing the joints sideways for lubrication
8 h
8 h
20 h
Lubricate the outer profi-
le tube’s inner surface
h = working hours
Fig. 15.Lubrication points and intervals for the PTO shaft.
8.3.PERIODIC INSPECTIONS
D
With new machines, check the mounting bolts for
tightness after the first operating hour, tightening them
if necessary. Tightening torques are shown in table 2.
D
Check the mounting bolts for tightness once a week.
D
The knife---to---anvil clearance is adjusted to the
specified values. For instructions on adjusting the
clearance, see Section 9.7.
3
2
1
4
5
Fig. 16.Checklist for tightening and checking clearances.
Item
Width across flats,
mm (inches)
Tightening torque, Nm
(lbf)
1.
Check the knife bolts for tightness.
17 mm (11/16”)
60 (44
3
/
16
)
2.
Check the bearing housing bolts for tight-
ness
on both sides.
19 mm (3/4”)
80 (55
15
/
16
)
3.
Check the anvil bolts for tightness.
24 mm (15/16”)
200 (147
15
/
16
)
4.
Check the clearance between knives and
vertical anvils.
19 mm (3/4”)
1.2–1.5 mm (0.05–0.06”)
5.
Check the bearings for radial clearance.
0.02–0.03 mm (0.0008–0.0012”)
Table 2.Tightening torques and clearences.
