32
DKMH.PS.315.B1.02 520L0535
Series 20 – Axial Piston Pumps
Service Manual and Repair Instructions
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 rst. These measurements
must not vary more than 0.03 from each
other.
Disassembly and Assembly
MAJOR REPAIRS
(continued)
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
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Series 20 Axial Piston Pumps_SR.indd 24.4.2002, 14:0432-33
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