Maintenance
Ampco Pumps Company
Ampco Pumps Company ZP3 Manual M-004 Rev A 10.15
Page 20
Double Seal Maintenance
Disassembly:
Use caution not to damage the seals during removal.
1) Remove the Inner stationary seals from the pump body (Figure 35, item 61).
2) Remove the wave springs and stationary o-rings from the stationary seals.
3) Slide the seal seats from each shaft, and remove the seal seat o-ring from the shaft.
Assembly:
Clean both shaft ends and the body before assembling. Apply a light film of lubricant to NEW
seal seat o-rings and insert them on the shaft’s slot. Slide the seal seat onto the shaft by
pushing it against the shaft shoulder making sure to align the drive flats on seal seat and shaft
(Figure 36).
Figure 36: Aligning Flats
Apply a light film of lubricant to NEW inner stationary o-rings
and install them on the inner stationary seals. Place the inner
wave spring into the body and install the inner stationary seal
into the seal groove (Figure 37). Make sure the seal stop pins
are aligned with the notches on the inner stationary seal. For
double seals, apply a light film of lubricant to NEW outer
stationary o-rings and install them on the outer stationary
seals. Place the outer wave spring into the body and install the
outer stationary seal in the seal groove (Figure 37). Check that
the seal stop pins are aligned with the notches on the outer
stationary seal.
Figure 37: Installing Stationary Seals
Shaft Flats
Seal Flats
Double
Mechanical Seal
Figure 35
