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M A I N T E N A N C E
PUMP MAINTENANCE AND REPAIR
LUBRICATION
The only maintenance on your SP pump other than cleaning and sanitizing is periodic lubrication
of the power frame bearings, seal replacement and inspection of the pump components.
Lubrication of the liquid end section is not required as the pump relies on the process fluid for
lubrication.
LUBRICATION OF POWER FRAME BEARINGS
The bearings in the power frame are lubricated in one of two ways; either by greasing which is
standard, or by an optional oil feed system. The method you use has been determined by your
specific pump application.
Grease Lubrication
The power frame bearings should be greased at regular intervals. Mobile Oil Corporation's
"Mobile Temp SHC32" grease or equivalent is recommended. Mixing of different brands of grease
should be avoided to prevent possible chemical reactions between the brands which could
damage the bearings. Greases containing vegetable or animal bases should not be used
because they can develop harmful acids. Also avoid using greases containing graphite, rosin, talc
and other impurities.
Old grease, forced out of the bearings by new grease during lubrication, accumulates in the
reservoir in the power frame housing. Because of the design of the grease lubrication system, the
bearings will pump excess grease into the grease reservoir between the bearings. A pipe plug in
the power frame is provided for removing old grease from the power frame reservoir.
Note:
Be sure the lubrication fittings are wiped clean before greasing to prevent dirt from being
forced into the bearings during greasing.
If your pump has been operated under extremely dusty or wet conditions for several months or
has been idle for a long period of time, the bearings should be cleaned thoroughly with
nonflammable solvent and new grease applied. Refer to the applicable paragraphs for
disassembly, cleaning and inspection procedures.
Oil System Lubrication
The automatic oiling system utilizes a glass or plastic bottle filled with oil which replenishes the
supply of oil in the power frame reservoir if it reaches a level lower than what the system is set for.
When the bottle is empty, refill it with oil. A good grade of SAE 20 oil is recommended.
Do not supply too much oil. An excessive amount of oil in the reservoir can cause overheating of
the bearing and result in bearing failure.
Periodically, the oil should be drained from the power frame reservoir to prevent buildup of dirt,
metal chips, and extraneous material that could possibly damage the bearings or oil seals. Refer
to the disassembly section for disassembly procedures.
Grease to Oil Conversion
It is possible to convert your pump from the standard grease lubrication to the optional oiler
system. To covert, you must disassemble the power frame and thoroughly clean the power frame
reservoir, bearing covers and bearings to remove any trace of grease, per the applicable
maintenance and repair instructions contained in this manual. For installation of the automatic
oiler system, refer to the instructions accompanying the oiler, and the topic
Installation of
Automatic Oiler on page 6 of this manual.
