HALE AP, Technical Manual

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5.8.7 Miscellaneous Procedures
Selected major pump/gearbox components (see Figure 20 thru Figure 25) can be removed and
replaced after removing the pump and gearbox assembly from the apparatus. Discharge and
suction port hoses/plumbing will require removal before the pump removal procedure can be
performed. Follow OEM instructions/procedures to remove and install discharge and/or suction
port hoses/plumbing when required for pump component access. The following pump/gearbox
components can be removed and replaced after removing the pump and gearbox assembly from
the apparatus.
•
Cooling System (See paragraph 5.8.7.1, Cooling System R&R.)
•
Volute (See paragraph 5.8.4.3 or 5.8.4.4, Volute R&Rs.)
• Clearance Rings (See paragraph 5.8.7.2, Pump Clearance Ring R&R.)
•
Impeller (See paragraph 5.8.4.6 (MBP), 5.8.4.7 (AP), or 5.8.4.8 (CBP) for Impeller R&Rs.)
•
Pump Head (See paragraph 5.8.4.11, Pump Head R&R.)
•
Gearbox Components (See section 5.9 for Gearbox procedures.)
5.8.7.1 Cooling System
The gearbox cooling system circulates pump water to transfer heat from the gearbox oil to the
pump discharge, thus maintaining lower gearbox operating temperatures. The gearbox cooling
system has no internal joints to leak and should never require replacement. However allowing
water to freeze in the gearbox cooling tubes can cause the cooling tubes to rupture.
In addition to a leak, cooling tube removal is required to access the gear set should the gears
ever require replacement. Whenever the cooling tube is removed it is no longer usable and re-
quires replacement with a new cooling tube. This is due to the U-shape design and that com-
pression fittings are required to prevent vibration from moving the cooling tube during pump op-
eration.
The cooling system is an option for all of the Hale Flex Series single stage booster pumps and
can be included with the initial purchase or added after the pump has been in service for any
period of time. If the cooling system is added after the pump is factory built, contact Hale Cus-
tomer Service (800-533–3569) for a parts listing and installation/drain details.
Refer to Table 39 for a list of tools and/or consumables required for this procedure.