Service Manual

122 PW / PY Series
REMOVAL, INSPECTION AND
ASSEMBLY OF INPUT SHAFT
Refer to Figure 16.
Disassembly
1. Remove the retaining ring (3).
2. Remove the lip seal (6).
3. Remove the spacer (4).
4. Remove the shaft assembly (1).
Inspection
1. Inspect the input shaft (1) for worn splines,
damage, or keyway damage. Replace shaft
assembly if necessary.
2. Inspect the bearing (5) for evidence of scoring,
corrosion, or damage. Replace shaft assembly
if necessary.
3. Inspect and replace the spacer (4) if it is bent or
broken.
NOTE: Replace the input shaft seal (6)
after removal.
Assembly
Figure 16. PW / PY Pump Input Shaft
1. Install input shaft (1) assembly into the housing
(15) bore. Light tapping with a rubber mallet
may be necessary on the input shaft (1) once
the bearing is aligned with the housing bore
(15). Rotate the input shaft (1) to insure free
movement.
2. Install spacer (4).
3. Install new lip seal (6). Remove the plastic
wrap.
4. Install retaining ring (3).
NOTE: If trunnion arm is to be removed,
delay reassembly of input shaft assem-
bly.
4. Inspect and replace the retaining ring (3) if it is
bent or broken.
5. Inspect and replace the thrust spring (20)
and thrust washer (19) if they are distorted or
broken.
NOTE: Upon removal, it is recommended
that all seals, O-rings and gaskets be re-
placed. During installation, lightly lubri-
cate all seals, O-rings and gaskets with
clean petroleum jelly prior to assembly.
Also, protect the inner diameter of seals
by covering the shaft with plastic wrap.
15
1
20
19
2
2
5
4
6
3