Operator’s manual
Rear disc mowers
KDT
- 33 -
Fig. 30.
Permissible wear of knife holder pin on disk a) knife base M12 b) knife base M12 with claw
NOTICE:
If the knife is missing or disc cover plate is damaged the vibrations may
occur, which leads to cutterbar’s damage. In that case warranty claim will be
revoked. If the disc or disc cover plate is damaged, the whole set must be
immediately replaced (2 knives) with new genuine ones.
6.9.2.
Checking the tension of the V-belts
Check the V-belt tension. V-belts are tensioned with spring tensioner (
Fig. 31
) equipped with
checking plate. Distance
S
between plate tip and holder should be 0.4". If the gap is wider the
V-belts will be looser. Tensioning is done by nuts
N.
When any of the belts are damaged,
the complete set must be replaced.
Fig. 31.
Spring V-belts tensioner
6.9.3.
Inspection of tension of toothed belt for gears of rollers and conditioner
Drive from cog gear shaft is transmitted on rollers/conditioner roller axles through toothed
belts. Constant belt tension is provided by tensioner adjustable with tensioning nut
N
(
Fig. 32b
)
Belt tightening can be checked through eye
O
(
Fig. 32a
and
c
). In order to tension the belt
remove safety guard (
Fig. 32a
and
c
) having unscrewed four nuts
S.
Then
,
tension the toothed belt
using tensioning screw and nut
N
(
Fig. 32b
and
d
)
.
Properly tensioned belt, when pressed with
thumb in the middle should deflect by approx.. 0.2".
S
N
10
min.
a)
b)