Maintenance
Ampco Pumps Company
Page 27
Ampco Pumps Company ZP3 Manual M-004 Rev A 10.15
Gear Case Maintenance
6)
Using a press and a V-block, remove the front and rear bearings along with the bearing
spacer. To prevent damage to the shafts make sure that both ends are protected (Figure 50).
Reference Table 7 for the required force (in tons) needed to press the bearings off the shafts.
Assembly
1)
Clean all reusable parts prior to reassembly. Apply a light coat of lubricant on the shaft
area where the front bearing will sit. Position the shaft upright in the press with the rotor end
facing down (Figure 51, Drawing 1). Open the new front bearing assembly and be sure not to
interchange any parts. All bearings are manufactured as sets and assembled to have a
precise overall length. Place the front bearing over the shaft along with the bearing spacer
(Figure 51, Drawing 2). Make sure the bearing and spacer are aligned before pressing them
on. Reference Table 5 for the required force (in tons) needed to press the bearings on to the
shafts. Using a sleeve that rests on the bearing spacer and rides over the shaft, press the
bearing on until it seats against the shaft shoulder. A shim can be used to ensure that the
bearing is fully rested on the shaft shoulder (Figure 51, Drawing 3).
Figure 51: Pressing Front Bearing onto Shaft
Front
Bearing
Rear
Bearing
Drawing 1
Drawing 3
Drawing 2
Check Seat
With Shim
Figure 50: Removing Bearings
and Sleeve From Shaft
Bearing
Spacer
Table 7: Force Required to Press Bearings
Front Bearings
Rear Bearings
On
(Tons)
Off
(Tons)
On (Tons)
Off
(Tons)
6, 15, 18
.50 1.00 .50 1.00
30, 34
.50 1.00 .50 1.00
45, 60, 64, 130,134
2.00 5.00 3.00 5.00
180, 220, 224
5.00 15.00 5.00 15.00
210, 320
5.00 20.00 5.00 20.00
ZP3 Model
Bearing
Spacer
Front
Bearing
