Hale MBP Booster - Manual (Page 71)

❑ Preventive Maintenance
70 Silencer Series Booster Pump, p/n: 029-0020-83-0
2. Unthread the com-
pression fittings and
disconnect gearbox
cooler hoses from the
volute. (See Figure 6-
5: “Typical Water
Cooling Lines.”)
3. Remove the 7/16-14
bolts and hardware to
dismantle the volute
from the pump head.
Pull the volute body
from the assembly
being careful not to
damage the impeller
or scratch the sealing
surfaces of the volute.
(See Figure 6-4:
“Booster Pump Parts
Breakdown,” on page 69.)
Note: A dead blow hammer could be needed. Tap, in a crisscross pattern,
around the volute until it is separated from the cover plate. Support the weight of
the volute as it weighs approximately 45lbs. (17kgs.).
DO NOT damage the brass clearance rings or impeller as you separate the
volute (pump body) from the pump head. The impeller, clearance rings and
mechanical seal assembly need not be removed.
4. Without removing from the volute, inspect the front clearance ring for wear
and replace accordingly. See heading “Inspection – Clearance Rings” on page
72.
Note: Removing the clearance ring renders it defective. It must be replaced. A
usual good practice, if one ring requires replacement, the other should be
replaced as well. Also verify the impeller clearance. See heading “Inspection –
Impeller” on page 72.
Installation Notes – Volute
To install, follow the preceding steps in the reverse order, paying attention to
the following:
❑ Review preceding sections “Before You Begin...,” on page 63 and “Clean-
ing and Inspection Guidelines,” on page 65 to ensure a thorough
installation.
Figure 6-5: Typical Water Cooling Lines