Service Manual and
Axial Piston Pumps Series 20
Repair Instructions
L1003506
• Rev BA • Jun 2014
33
Take care that the shaft seal is only fitted after
the end cap has been screwed down. If any of
those parts are replaced, the shaft end play must
be checked:
drive shaft - bearings - housing - front cover - end
cap.
To check the shaft end play, assemble the above
parts plus the gaskets. The shaft end play should
be from 0.08 to 0.18 mm [0.003 - 0.007 in] for
frame sizes 033 - 089 and from 0.15 to 0.3 mm
[0.006 - 0.012 in] for frame sizes 119 - 334. If
adjustment is necessary, a shim can be placed
under the bearing race in the end cap.
Disassemble these parts and resume reassembly
procedure.
The tapered bearing can be pressed off the shaft
if required. Be careful not to damage the seal
diameter of the shaft while removing the
bearing.
Remove the thrust plate and set the pump on the
servo housings.
Insert the shaft and bearing assembly through
the cast hole in the swash plate, allowing the
bearing to rest on the cast leveled edge.
Changing the pump shaft
In order to replace the pump shaft, the stripping
operations given under
pages 19, 21, 22, 23,24, 25,
27
must be carried out.
F000 124
102
51 50 49
53
54, 55
Cone
bearing
F000 112
Disassembly and Assembly
50
Cone bearing
49
Major repairs
(continued)
F000 123
F000 069
50 Cone bearing
49
Torque
53
54, 55, 102 spanner
