Service Manual

33PC Series
REMOVAL, INSPECTION AND
INSTALLATION OF TRUNNION ARM
Refer to Figure 15.
Disassembly
1. Remove the slot guide (38).
2. Remove and discard the trunnion seal retainer
and seal (49).
3. Remove the trunnion arm (37).
Inspection
1. Inspect the trunnion arm (37) for wear or
damage. Replace the trunnion arm if necessary.
2. Check for excessive play between trunnion arm
(37) and housing (1). Replace housing if
necessary.
NOTE: Upon removal, all seals, O-rings
and gaskets should be replaced.
Assembly
1. Install the trunnion arm (37) into the housing (1)
bore. Rotate the trunnion arm to verify free
movement.
NOTE: During installation, lightly lubri-
cate all seals, O-rings and gaskets with
clean petroleum jelly prior to assembly.
Also protect the inner diameter of the
seals by covering the shaft with plastic
wrap. Remove the plastic wrap after the
seal is installed.
2. Install a new seal and seal retainer (49).
3. Install slot guide (38).
4. To completely assemble the pump, refer to the
assembly steps on pages 23-33. Begin with the
trunnion arm assembly steps listed on page 33
and complete the assembly steps in reverse
order working toward the front of the manual.
Figure 15. PC Pump Trunnion Arm
38
37
49
1