Hale MBP Booster - Manual (Page 79)

❑ Preventive Maintenance
78 Silencer Series Booster Pump, p/n: 029-0020-83-0
Removing the Pump Head and Oil Seal
(See Figure 6-9: “Oil Seal Replacement / Pump Head Parts,” on page 77.)
1. As described in the previous sections, remove the following -
❑ Volute, on pape 69
❑ Impeller, on pape 71
❑ Mechanical seal, on pape 74
2. Remove the four (4) hex screws and hardware securing the pump head to the
gearbox casing.
3. Using a soft faced (dead blow) hammer, carefully tap around the pump head
until it is separated from the gearbox. Be careful not to damage the pump shaft.
4. Scrape any gasket material between the mating surfaces of the pump head
and the pump body.
5. Remove the seal ring from the pump head on the gearbox side. Replace this
seal before reinstalling the unit.
6. Use a press to remove the oil seal and mechanical seal from the pump side
of the pump head. Oil seals cannot be reused.
Installation Notes – Pump Head and Oil seal
To install, follow the preceding instructions in the reverse order, paying
attention to the following:
❑ Review preceding sections “Before You Begin...” beginning on pape 63
and “Cleaning and Inspection Guidelines” beginning on pape 65 to
ensure a thorough installation.
❑ All critical internal components must be inspected to tolerances. See
related heading “Inspection” as follows:
● Volute, pump body, on pape 70
●
Clearance rings, on pape 72
● Impeller, on pape 72
●
Mechanical seal, on pape 74
❑ Using a press, install a “new” oil seal and the existing (or new) clearance
ring into the gearbox side of the pump head.