Service Manual

25PC Series
Refer to Figure 4.
Disassembly
1. Remove retaining ring (22) from housing.
2. Remove lip seal (20). Care must be taken to
prevent damage to the housing bore, shaft
sealing surface, or bearing. Once removed, the
seal is not reusable.
Inspection
With seal removed inspect the spacer (21) and
housing (1) bore for damage, corrosion or wear.
Assembly
1. Lubricate the new lip seal (20) inside diameter
with petroleum jelly.
2. Wrap the input shaft (18) with plastic wrap to
prevent damage to the inner surface of the lip
seal (20).
3. Slide spacer (21) and seal (20) over shaft (18)
so that lettering on the seal faces out.
4. Press the lip seal (20) into the housing bore.
Insure the lip seal (20), shaft (18) or housing (1)
bore do not become damaged. Remove the
plastic wrap.
5. Install the retaining ring (22) into the housing (1)
bore groove. Refer to Figure 4.
REMOVAL, INSPECTION AND/OR
REPLACEMENT OF INPUT SHAFT
SEAL
Figure 4. PC Pump Input Shaft Seal
REMOVAL, INSPECTION AND/OR
REPLACEMENT OF TRUNNION ARM
SEAL
Figure 5. Trunnion Arm Seal
Refer to Figure 5.
Disassembly
1. Remove the RTN assembly or control arm.
2. Remove the retainer and lip seal (49) from the
housing. Care must be taken to prevent damage
to the housing trunnion bore, trunnion arm and
sealing surface. Once removed the retainer and
lip seal are not reusable.
Inspection
With the lip seal (49) removed, inspect the area for
corrosion and wear. Inspect the trunnion bore area
sealing surface for damage or wear.
Assembly
1. Lubricate the new lip seal (49) inside diameter
with petroleum jelly.
2. Wrap the trunnion arm with plastic wrap to
prevent damage to the inner surface of the lip
seal (49).
3. Slide the lip seal (49) over the trunnion arm so that
the lettering on the seal (49) faces out.
4. Press the lip seal (49) into the housing bore.
Insure the seal (49), trunnion arm, and housing
bore do not become damaged. Remove plastic
wrap.
5. Install the retainer from (49) over the trunnion
arm on top of the lip seal. Press into the trunnion
seal bore in the housing until the retainer mates
against the trunnion seal.
6. Install the RTN assembly or control arm.