Hale 2CBP - Manual (Page 52)

Sec V- 16 Maintenance and Repair
Booster Pumps
2CBP PUMP REPAIR
Please review the General Repair and Cleaning
and Inspection Guidelines before beginning
these procedures.
Because the 2CBP differs in construction from
other booster pumps, servicing any internal part
demands complete disassembly as outlined
here.
2CBP Pump and Gearbox Assembly
Disassemble the 2CBP Pump from the
Gearbox Assembly
1. Remove the pump and gearbox assembly as
described above.
2. Remove capscrews that secure the bearing
housing to the front of the pump body.
Remove the bearing housing assembly.
3. Remove the eight 3/8-16 X 1-3/4" screws,
nuts and washers holding the upper and
lower pump body together.
4. Remove the 5/16-18 X 3/4 screws holding
upper pump body to the pump head.
5. Remove the upper pump body.
6. Support the lower pump body and remove
the 5/16-18 X 3/4 screws holding lower pump
body to pump head. Remove the lower pump
body.
Before removing the impellers, mark their
location on the pump shaft. Impellers MUST
be installed in the same position.
NEVER STRIKE THE IMPELLER. SEVERE
IMPACT WILL CAUSE DAMAGE THAT
REQUIRES REPLACEMENT
7. Hold the impeller with a strap wrench. Use a
1 3/4" socket or wrench to remove the
impeller nut and washer.
8. To avoid warping, use a puller to remove the
impellers. Remove the center bearing, and
impeller key from the shaft.
9. Separate the impellers from the center
bearing.
10. Carefully remove the oil seal and retaining
ring.
11. Remove the mechanical seal assembly from
the pump shaft.
12. Remove the stationary seat.
13. Remove the four 5/16-18 X 3/4 cap screws
that secure the pump head to the gearbox
and remove the pump head.
14. Remove old oil seal from the pump head.
15. Inspect and clean all components according
to the Cleaning and Inspection guidelines
above.
Reassemble Pump to Gearbox
1. Press a new oil seal into the pump head.
2. Apply a light coat of grease to hold pump
head gasket in place and install pump head.
3. Secure the pump head to the gearbox with
the eight 3/8-16X1" capscrews.
4. Install the mechanical seal:
o
Clean bore of pump head using alcohol
swabs and install stationary seat.
NOTE: Oil and grease will damage the
mechanical seal face. Do not touch the carbon
seal face of the mechanical seal seat surfaces.