Hale Rear Mount - Manual (Page 5)

When working from draft, do not pump volumes large enough to cause a whirlpool at the strainer.
This will allow air to get into the pump and result in rough operation and pulsation. If more water is
needed, try to get a better submergence for the strainer.
LUBRICATION
PEDESTAL
The pump shaft bearings are supplied with oil from the pedestal housing. Use a premium grade of
multirange SAE EP-90 oil. Fill to oil level plug. Do not use a heavier oil or too much oil. Drain oil
and renew every six months.
MAINTENANCE
Except for lubrication, this pump requires very little attention. The little required, however, is
important.
During freezing weather, be sure to drain all water out of the pump. This can be done in the
following manner:
Open discharge valves, remove suction tube and discharge valve caps. Open all drain
valves and cocks (gauge lines, valves and cooling lines, etc.). After the pump is completely
drained, all the caps should be replaced and the valves closed. Do not put off closing the
drains or valves until later, as forgetting to close them may result in failure to prime the
pump when attempting to work from draft.
In some installations, the pump mounting angle may prevent complete draining of the drive unit
cooling tube. If the pump cannot be protected from freezing temperatures, it is advisable to install a
fitting in the cooling line so that the line can be blown out with air. After pumping salt water, connect
the pump to a fresh water hydrant or other source of fresh water and pump for a few minutes to
clean out the salt water. If you have been forced to pump water containing sand or other foreign
matter, do the same as stated above for salt water, flushing out discharge valves, relief valve,
gauge and cooling lines.
GASKETS AND WASHERS
Inspect the suction hose rubber washers and the washers and the washers in suction tube caps
frequently. Foreign matter under these washers or faulty washers will cause air leaks which may
prevent getting water when working from draft and even if you get water, will cause an irregular
pulsating stream.
SEAL REPLACEMENT
RMB (Plate #726); RMC (Plate #725)
TO REPLACE PUMP SEAL
1. Disconnect heat exchanger line tubes (where applicable), priming line tube, and gauge line
tubes.
2. Remove the screws which hold the pump volute body to the pump head and tap casing free
with a soft hammer.
3. Remove cotter pin from impeller lock nut (where applicable).
4. Loosen impeller lock nut or capscrew (where applicable) several rotations. Do not remove it yet.
3