Hale 2CBP - Manual (Page 41)

Maintenance and Repair
Booster Pumps
Sec V- 5
AP PUMP DISASSEMBLY
AP Pump Body
The pump body can be removed from the
gearbox assembly providing access to the
internal parts without disconnecting the drive
unit.
Remove AP Pump Body
1. Disconnect the suction, discharge, cooling
lines, and any electrical wiring. Disconnect
mounting brackets as required. Match mark
the pump body and pump head to ensure
proper alignment during reassembly.
2. Remove the 7/16 - 14 X 1" cap screws that
hold the pump body assembly to the pump
head.
3. Remove the pump body from the pump
head, do not damage the brass clearance
rings or impeller.
Figure 5-4: AP Pump and
Gearbox Assembly
4. Remove all remaining gasket material from
the mating surfaces of the pump body and
pump head.
Install the Pump body
1. Use a press to install the clearance ring in
the pump body.
2. Apply a small amount of grease to the
gasket and align on the pump body.
3. Install the pump body onto the pump head,
do not damage the clearance rings or
impeller.
4. Apply Loctite™ 242 (or equal) to the threads
and install the 7/16-14 UNC x 1 cap screws
that hold the pump body to the pump head.
Refer to Table 5-2 for recommended torque
values for fastener size and material.
5. Reconnect all piping and tubing.
6. Return the apparatus to service.
AP IMPELLER AND MECHANICAL SEAL
Remove AP Impeller
1. Remove the pump body as described above.
2. Remove the cotter pin that secures the
impeller nut.
3. Hold the impeller with a strap wrench, and
remove the impeller nut.
4. To avoid warping the impeller, use wedges
and a proper puller to pull the impeller from
the pump shaft.