Maintenance
Ampco Pumps Company
Page 30
Ampco Pumps Company ZP3 Manual M-004 Rev A 10.15
Gear Case Maintenance
6)
Once the correct backface clearance is achieved, fill all bearings with grease through the
fittings on the mounting pads until grease is noticeable around the bearing assemblies. The
shafts should be rotated during this initial greasing to distribute the grease evenly. Apply a
light film of lubricant to the inside and outside diameters of the oil seals and install them into
the bearing retainers. Apply a silicone sealant to the outside flanges on the bearing retainer
(Figure 57). Once the silicone sealant is applied, install the bearing retainers onto the gear
case.
Figure 57: Bearing Retainer Installation
7)
Apply a light film of lubricant to the inside and outside diameters of the rear oil seals, and
install them into the back of the gear case with the spring side facing outward toward the gear.
Install the gear spacers onto the shaft and place the gear keys into the shaft key slots (Figure
58).
Figure 58: Rear Oil Seal and Gear Key Installation
8)
Once the gear keys are installed, orientate
the shafts so that the keyways on the drive
shaft are pointing in the 12 o’clock direction
(Figure 59, A). Slide the right-handed gear with
the single punch mark onto the drive shaft.
Slide the second gear with two punch marks on
the short shaft. To time the gears, align them
so that the single punch mark falls between the
two punch marks on the opposite gear (Figure
59, B).
Apply Sealant
to Flange
Bearing Retainer
Oil Seal
Oil Seal
Gear Spacer
Figure 59: Installing Gears
with Correct Timing
A
B
