37
EATON
Heavy-Duty Series 2 Hydrostatic Pumps Parts and Repair E-PUPI-TS004-E October 2004
23b. Move the depth
micrometer to the
opposite side of the
swashplate and
measure the
distance from the
parallel bar to the
face of the swash-
plate and note the
dimension.
23e. Using 3/4 in. end
wrench, tighten the
servo adjustment
screw lock nut, using
caution not to dis-
turb the neutral or
zero swashplate
position.
23d. Use a 3/8 in. end
wrench to turn the
servo piston adjust-
ment screw clock-
wise or counterclock-
wise to bring the
swashplate to the
zero position.
Note:
Earlier units
used a screwdriver
slot to adjust the
zero position.
23f. Torque the lock nut to 45 ft. lbs. [61 Nm]. Remove
the depth micrometer and parallel bar.
24. Install the two hollow
dowel pins in the
pump housing and
the two hold-down
springs and washers
on the swashplate
hold-down arms.
25. Install two hold-down
arm assembly
alignment tools and
dowels.
Note:
The alignment
tool is a special tool.
Dimensions required
to make this tool are
located in the Special
Tool section.
26. Lubricate and install
the rear bearing
shims and cup into
the pump end cover.
27a. Install the end cover
without either the
valve or bearing
plates, aligning it
with the alignment
tool dowels.
23a. Using a depth
micrometer, meas-
ure the distance
from the parallel bar
to the face of the
swashplate and note
the dimension.
23. The swashplate must be set to neutral. Place a
parallel bar across the face of the pump housing,
making sure the bar is resting firmly on the
housing face.
23c. With the two dimensions noted, turn the face of
the depth micrometer so that the zero position is
right in between the two noted dimensions.
27.Check the drive shaft end play.
Adjusting Shaft Bearing End Play
and End Cover Assembly
Assembly
Swashplate Neutral Adjust
