Hansen P4 Service Manual page 11

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Fig. 2b
Fig. 2c
5.5.3 Mounting of the torque arm
After fitting and securing the gear unit to the driven shaft (see par.5.5.1 and 5.5.2), fix unit by
means of the optionally supplied torque arm to a fixed torque reaction point. Refer to the
certified drawing or catalogue for torque arm location on gear unit.
The connection between torque arm and reaction point must remain flexible and resilient. This is
achieved by preloading the disc springs of the torque arm.
The preload of the disc springs (A) will be adjusted as follows:
- Determine the spacing S (fig. 3a), this is the spacing of the disk springs in unloaded and
unmounted condition.
- Screw the nuts until spacing S1 (spacing between gear unit and fixed point) is reached,
where S1 = S - DS (fig. 3b, fig. 3c and fig. 3d)
DS = spacing obtained after compression of the disk springs
(table 2, table 3 and table 4) due to the weight of the gear unit and
tightening of the nuts.
- When the prescribed spacing S1 is obtained, lock the nuts by tightening outer nut
against inner nut.
Fig. 3a
SECURING
DISMOUNTING
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