15
4.
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 100 hours of
operation. Tensioning
is done according to the following procedure (figure 12)! First,
disengage the PTO shaft and turn off the engine. Remove the protective sheet of the PTO
shaft (pos. 1).
Series M winches
First loosen the nut and the screw (pos. 2, figure 13), which are used to fix the housing.
Then start tensioning the chain (pos. 3) with the screw (pos. 4). Turn the screw to the right,
until you reach an appropriate tension of the chain. At the same time, you must still hold
the tightening nut (pos. 5). The chain is correctly tensioned when it can still oscillate for
approx. 3 to 4 mm in the transverse direction. Tighten the retaining screws (pos. 2) which
you have loosened before.
Figure 12
