Maintenance
Ampco Pumps Company
Page 17
Ampco Pumps Company ZP3 Manual M-004 Rev A 10.15
Pump Disassembly
Figure 26: Removal of Pump Body
Single Seal Maintenance
1)
Start by inserting the wave spring into the sleeve making sure that it sets below the
stationary drive pins (Figure 27). Insert a rotor key in the keyway on the shaft.
2)
Slide the stationary seal o-ring into the body hub until it seats against the top of the sleeve
(previously installed). Align the slots on the stationary seal with the pins inside the hub. Press
the stationary seal into the hub until is seats on the spring; there
should be noticeable spring resistance when pushing on the seal.
4) Remove the two body hold down bolts us-
ing the appropriate driver. Pull the pump
body off by sliding it along the studs
(Figure 26). If the body is stuck, use a soft
mallet to tap the body. Inspect the body
for excessive wear, clean, and continue on
to seal maintenance. It is important to re-
assemble the pump body back onto the
original gear case because the shafts are
shimmed for that particular body.
Wave
Spring
Figure 27: Inserting
Figure 28: Stationary Seal Assembly
Align the slot
and pin
Stationary Seal
O-ring
