Service Manual

123PW / PY Series
Refer to Figure 17.
Disassembly
1. Remove trunnion seal retainer and seal (12).
2. Remove the slot guide (14).
3. Remove the trunnion arm (13).
Inspection
1. Inspect the trunnion arm (13) for wear or damage.
Replace the trunnion arm if necessary.
Assembly
1. Install the trunnion arm (13) into the housing
(15) bore. Rotate the trunnion arm to verify free
movement.
2. Install a new seal and seal retainer.
3. Install the slot guide (14).
4. To completely reassemble the pump, refer to
the assembly steps on pages 111-122. Begin
with the trunnion arm assembly steps listed on
page 122 and complete the assembly steps in
reverse order working towards the front of the
manual.
REMOVAL AND INSPECTION OF
TRUNNION ARM
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.
Remove the plastic wrap after the seal
is installed.
Figure 17. PW / PY Pump Trunnion Arm
15
12
13
14