Shaft Seal Replacement - Sauer Danfoss 51 Series Manual

HYDRAULIC PUMP
6.5.2 Shaft Seal Replacement (SAE Flange
Configuration)
Replacement of the lip type shaft seals requires removal
of the Type 51 motor from the torque hub unit. Refer to
Groups 3059 and 3001 for removal information.
(1) Remove the screws holding the flange to the
housing using a 6 mm internal hex wrench
(Fig 11).
Figure 11. Flange to Housing Screw Removal
(2) Remove the flange from the housing using a
two leg puller as shown in Fig 12. Take care
not to damage the housing bore or shaft
while using the puller.
Figure 12. Flange Removal
CAUTION
Do not allow the output shaft to
move out of the housing while re-
moving the flange. After the flange
is removed, do not attempt to re-
move the shaft from the housing. If
the output shaft moves out of the
housing, the synchronizing shaft
and rollers could fall out of position,
requiring major disassembly of the
unit.
(3) Pry the old seal from the flange using a flat
blade screwdriver as shown in Fig. 13. The
seal is not reusable. Inspect the flange for
any damage or nicks.
GROUP 3025
3025- - 9A, Page 13