Uniforest 65H, Instructions For Use Manual, Page: 16 / 48

16
Drive chain tensioning
After a certain period of operation (10 hours), the drive chain stretches; therefore it must
be checked frequently and tensioned, if required. It must be checked every 500 hours of
operation. Tensioning is done according to the following proced
ure (figure 12)! First,
disengage the PTO shaft and turn off the engine. Remove the protective sheet of the PTO
shaft (pos. 1,
fi g.12).
Loosen the nuts (pos. 2, pos. 8, fig. 12), which fix the lower drive (pos. 3 , pos. 9, fig. 12).
Then loosen the safety nut (pos. 12, fig. 12) and use screw (pos. 13, fig. 12) to tension the
longer chain (pos. 6). Turn this screw to the right until you set the correct tension of the
chain.
Chain is correctly tensioned when it still swings approx. 3 to 4 mm in the transverse
direction. Them, with the counter- nut (pos. 12, fig. 12), tighten the screw, which prevents
the tensioning device to loosen.
Now securely tighten all four nuts on the lower drive (pos. 2, fig. 12). Then start to tension
the shorter chain (pos. 8, fig. 12). If you have already loosened the four nuts (pos. 8, fig.
12), loosen the nut (pos. 11, fig. 12) and start turning the tensioning screw (pos. 10, fig. 12)
to the left. This increases the distance between both housings. When the chain (pos. 7, fig.
12) is properly tensioned, tighten the nut (pos. 11, fig. 12) and other nuts (pos. 8).
Figure 12
Wire rope assembly
First, remove the triangular protective net on the winch column. Then rotate the cover
(po
s. 7, figure 11) and rotate the drum in a position, which enables unscrewing of the bolt
(pos. 8, figure 11)on the drum. Insert the wire rope in the guide of the upper pulley and
direct it through the upper pulley to the rope drum. Insert the rope in the groove and
tighten the bolt (pos. 8). Then start to wind according to the procedure, which applies to
towing. Once the entire length of the wire rope is wound, unwind it again and wind it
again strongly according to the procedure, which is described in the ch
apter “Wire rope
unwinding” to prevent damage to the rope.