Hale 2CBP - Manual (Page 47)

Maintenance and Repair
Booster Pumps
Sec V- 11
CBP PUMP REPAIR
Please review the General Repair and Cleaning
and Inspection Guidelines before beginning
these procedures.
CBP Pump Body
The pump body can be removed while the pump
and gearbox assembly are mounted on the
apparatus. With the pump body removed, the
impeller can be serviced without removing the
entire pump and gearbox assembly.
Remove CBP Pump Body
1. Disconnect the suction, discharge, cooling
lines, and electrical switches. Disconnect
the mounting brackets as required. Match
mark the pump body and pump head to
ensure proper alignment during reassembly.
2. Remove the 8, 3/8 - 16 X 7/8" nylon locking
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.
4. Remove all remaining gasket material from
the mating surface of the pump body and the
pump head.
5. Inspect and clean all components according
to the Cleaning and Inspection Guidelines
above.
Reinstall CBP Pump Body
After checking the impeller and clearance rings,
reinstall the pump body.
1. Apply a light coating of grease to the
gasket and align on the pump head.
2. Install the pump body on the pump head, be
careful not to damage the clearance ring or
impeller.
3. Apply Loctite™ 242 (or equal) to the
threads and install the eight 3/8-16 X 7/8
locking cap screws that hold the pump body
assembly to the pump body. Refer to Table
5-2 for recommended torque values for size
and materials used.
4. Reconnect all piping and tubing.
The pump can now be reinstalled and re-
turned to service.
CBP IMPELLER AND MECHANICAL
SEAL
Remove CBP Impeller
1. Remove pump body as described above.
2. Hold the impeller with a strap wrench,
remove the impeller nut and lock washer.
3. To avoid warping the impeller, use wedges
and a proper puller to pull impeller from the
pump shaft.
DO NOT STRIKE THE IMPELLER.
IRREPARABLE DAMAGE MAY RESULT
4. Remove the impeller key from the pump
shaft.
5. Inspect and clean all components according
to the Cleaning and Inspection Guidelines
above.