d.
Install the servo springs (50), retainers (53), washers (52) and screws (51), if these parts were removed. Use
new screws (51). Tighten to 10-11 ft-lbs.
e.
Slide the servo housing (38) over the servo piston (54) and thread it into the pump housing (70). Adjust the
housing to the height and rotational position as determined by the markings made during disassembly.
f.
Install the thrust plate (47) on the swashplate for the neutral (zero angle) measurement. Using a depth
micrometer, 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 .001" from each
other.
g.
If adjustment is required follow these steps.
(1)
Back out both servo housings (38) until the spring load is released on the swashplate (46) (check by
rocking swashplate).
(2)
Thread in each housing (38) until spring load just starts to be felt on the swashplate (46).
(3)
Check measurements as described previously.
(4)
Thread each housing farther in until the measurements are within .001" of each other.
h.
After adjustment has been completed, the retainers (49) can be installed and peened into the locking slot on the
housing. Remove the thrust plate (47) and set the pump on the servo housings (38).
i.
Press bearing (44) onto shaft (45). Insert the shaft and bearing assembly through the cast hole in the swashplate
(46), allowing the bearing to rest on the cast leveled edge.
NOTE
If drive shaft (45), bearings (44,35), housing (70), front cover (41) or end cap (25) are replaced,
the shaft end play must be checked.
j.
To check the shaft end play, assemble the above parts plus the gaskets (26, 42). The shaft end play should be
from .006" to .016". If adjustment is necessary, a shim (31) can be placed under the bearing race (29) in the end
cap (25). Disassemble these parts and resume reassembly procedure.
k.
Install the front cover (41) and gasket (42),being certain that the locating pins (71) are in place in the housing
(70). These parts will go on only one way and have all the mounting holes align with the housing (70). Install
screws (39) and washers (40) and torque to 27-37 ft-lbs.
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