33
F6715E968
ADJUSTMENTS - MAINTENANCE
DRIVE BELT REPLACEMENT - FIGURE 48
Follow these instructions to replace the drive belts:
1. Remove the bolted guard.
2.
Completely release the belt tension by loosing
the adjustment nut (item 1).
3. Remove the spring (item 2) and spring cup if
necessary.
4. Mark the alignment of the couplers to keep chain
synchronised, then remove chains.
5. Remove the four belts and install new ones
by sliding them between the coupler sprocket.
Move the couplers away from each other if nec-
essary.
6. Readjust the belt tension (Fig 45).
7.
Put guard back on.
1
2
Figure 48 Belt tightener
DRUM ADJUSTMENT - FIGURES 49 AND 50
The two drums are factory adjusted and do not need
adjustment, except in the case of repair (bearing re-
placement). An alignment may be necessary to cen-
ter the drum fingers (item 5 in figure 49) between the
scraper plates (item 4 in figure 49).
To adjust:
1.
Position the 1 1/2” (38 mm) blocks (items 1, fig
-
ure 49) between the frame and the cutting disk,
aligned with the knife sections (item 2). Position
two blocks on the square cross beam and one
on the frame’s main beam.
2.
Position a 1 1/4” (32 mm) block (item 3 on fig
-
ure 49) between the disk and the lower drum
fingers, aligned with the other blocks. The two
drums should now be parallel.
3.
Position drums to obtain 1/8” (3 mm) between
the front scraper finger (item 4 in figure 49)
and the drum edge (item 5 in figure 49).
4. Move drum to get approximately 1/4” (6 mm)
between the rear scraper finger and the drum
(figure 49).
5. Slightly tighten the bearing support plate bolts
(items 6 in figure 50) then remove the blocks.
Holes in the frame allow for a minor drum ad-
justment, if needed.
6.
Center the drum fingers between the scraper
slots by moving the drum bearing. Loosen bolts
(item 6 in figure 50) to move the bearing,
7. Tighten the bearing bolts.
8. Turn the drum a full rotation to make sure it runs
smoothly.