Service Manual and
Axial Piston Pumps Series 20
Repair Instructions
L1003506
• Rev BA • Jun 2014
32
The neutral (zero angle) position of the swash
plate must now be checked using a depth
micrometer.
The thrust plate must be installed on the swash
plate for this measurement. Measure the distance
from the end cap mounting face of the pump
housing to the face of the thrust plate 90° to the
trunnions, at the outer edge of the thrust plate.
Take the same measurement at a point 180°
(opposite edge of the thrust plate) from the first.
These measurements must not vary more than
0.03 from each other.
If adjustment required follow these steps.
a. Back out both servo housings until the spring
load is released on the swash plate (check by
rocking swash plate).
b. Thread in each housing until spring load just
starts to be felt on the swash plate.
c. Check measurement as described previously.
d. Thread each housing farther in until the
measurements are within 0.03 of each other.
Secure the servo cylinder with the retaining
plate.
After adjustment has been completed, the
retainers can be installed and peened into the
locking slot on the housing.
F000 122
F000 121
31
Major repairs
(continued)
Disassembly and Assembly
