
131
ADJUSTMENTS - MAINTENANCE
KNIFE ADJUSTMENT - FIGURE 193
CAUTION: Do not hitch the Forage Harvester to
the tractor for the KNIFE ADJUSTMENT OPER-
ATION.
CAUTION: Always proceed with the knife adjust-
ment with great precautions.
CAUTION: Be careful when working inside the
cutting chamber. A piece of wood should block
the cutting head in order to prevent any sudden
rotating motions from the latter (see Figure 246).
The Forage Harvester knives should be readjusted
after successive grindings have shortened them by
approximately 1/4” (6) since the shear bar cannot be
moved forward by more than 1/4” (6).
To adjust the knives:
1. The previous day, clean and apply oil on all cutter
head bolts (items 1 and 2).
2. Remove the shear bar, the cutter head cover, and
the guard used as support of the cutter head cover
(items 5 and 7).
3. Loosen the knife bolts (item 2) and adjusting screws
(item 1) supporting the knives.
4. Install the round guiding bar (item 3) (located in the
tool box of the Forage Harvester) (item 7) in the
holes (item 4) meant for this operation; it will be
used as a guide for the knife adjustment.
5. Both adjusting screws (item 1) on the back side of
each knife will be used for adjusting the knives so
that they slightly touch the guiding bar (item 3) on
its full length.
6. Slightly tighten the four knife bolts and readjust by
using the two screws (item 1) on the reverse side of
each knife. Then, tighten the four knife bolts (item
2) permanently to 300 - 320 lb-ft (407 to 434 N-M).
7. Once the knives perfectly adjusted, remove the
guiding bar and reinstall the shear bar, taking care
to choose the side with the best cutting edge. Install
the cutter head cover and its support (items 5 and 7).
Proceed with an appropriate knife grinding in order
to obtain a good cylindrical cutter head (please refer
to page 134 to page 137 regarding the shear bar
assembly and installation instructions. Refer to page
132 for instructions on how to grind the knives.
6
2
7
1
5
3-4
Figure 193 Knife adjustment
Manual
No
. F4117E987E V1.1
Содержание F41
Страница 1: ...Operator s Manual Forage Harvester Manual No F4117E987E V1 1 ...
Страница 108: ...108 LUBRICATION Figure 148 Universal joints and transmission chains Manual No F4117E987E V1 1 ...
Страница 133: ...133 ADJUSTMENTS MAINTENANCE 4 3 3 1 2 9 3 8 1 5 Figure 194 Knife grinding Manual No F4117E987E V1 1 ...