User Manual

22 310-2200 EZT
®
20.Remove the thrust bearing assembly (35)
from the housing (1). Inspect the thrust bear-
ing and thrust bearing cavity in the housing.
Inspection
1. Inspect the pump cylinder block running sur-
face for wear or damage.
2. Inspect the swashplate and thrust bearing
assemblies for wear or damage.
3. Inspect the center section block running sur-
faces. NOTE: These “sealing” surfaces
should be smooth in appearance without
scratches, scoring, nicks or abrasions. Drag
a fingernail across the surface to detect un-
even wear or scratches which may not be
visible.
4. Inspect the threaded check plug ports of the
center section for debris or damage.
5. Inspect the motor cylinder block running sur-
face for damage and wear.
6. Inspect all bearing, bushing and wear areas
in the housing.
Assembly
(Motor Block)
1. (See Figure 19) Turn the housing (1) so the
motor thrust bearing cavity is facing up. This
will assist in the installation of the motor
thrust bearing assembly (35) keeping it in
the bearing cavity during installation of the
center section assembly (57, Figure 17).
2. Insert the thrust bearing (35) in the housing
(1). NOTE: Place the thin race of the bear-
ing towards the housing bearing cavity. The
thick race must face the pistons.
(Center Section/Filter)
3. (See Figure 18) Install the new filter base (61)
onto the center section (57).
4. It will be necessary to clean the check plugs
prior to re-assembly. Install the check plugs
(56), in their correct location, into the center
section (57). Tighten the check plugs accord-
ing to Table 6.
5. Align the tabs on the filter cover with the
slots in the filter base and carfully press the
cover onto the base until the tabs snap into
place. Insure the bypass plate (Figure 18) is
located properly in the center section.
6. (See Figures 10 & 20) Install the motor shaft
(39), pinion gear (38) and flat washers (36 &
40) into the center section (57).
7. Assemble the motor block assembly (4) onto
the motor shaft (39).
8. (See Figure 20) Install the motor shaft, cen-
ter section and motor block assembly into the
housing so that the motor block pistons con-
tact the thrust bearing race. NOTE: Hold in
place and insure all pistons are still positioned
correctly in the cylinder bore by confirming
spring bias against the center section.
9. (See Figure 16) After applying thread adhe-
sive, insert the center section mounting
screws (12) while holding downward pres-
sure on the center section assembly (57,
Figure 20).
10.Tighten the center section mounting screws
(12) to the proper torque. Refer to Table 6.
NOTE: The center section must be fully
seated into the pilot bore before the screws
are tightened. The center section will not self
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