5
Pump Operation
CAUTION:
Read all limitations which apply
to selection of grease which may be pumped
by this product. Do not pump a grease which
is not specified to be compatible.
CAUTION:
Always read and follow fluid
manufacturers' recommendations regarding
proper use of protective eye wear, clothing
and respirators.
To Start Pump:
1
Immerse the pump's suction tube inlet into the
grease to be pumped.
2
Connect the air coupler to the pump and turn the
air regulator to the minimum setting.
3
Direct pump outlet hose into an approved waste
oil container.
4
Slowly adjust the air regulator until the pump is
primed and running smoothly. Be sure all air has
been purged from the system. The pump should prime
in less than 30 seconds.
5
Use the air regulator to control the pump's speed
and cycle rate. Always use the lowest pressure
required to obtain the desired flow rate. This will
increase pump and seal life.
6
Never allow a pump to be run dry of the grease
being pumped. A dry pump quickly speeds up,
which could damage the air motor and fluid seals. If
the pump suddenly speeds up, cut off the air supply as
soon as possible, refill the reservoir with grease and
reprime the pump.
7
If the pump will be unattended for any period of
time, or to shut off the system at the end of a work
shift, always follow the Pressure Relief Procedure on
page 2 of this manual.
Pump Repair / Servicing
Pump Disassembly Procedure:
Figure 11
1
Mount the pump horizontally in a bench vise.
Clamp the vise to the upper body of the pump and
use elastic jaw cushions in the vise to prevent scarring
the pump surface. With a socket wrench, loosen and
remove the four lower 5/16" Hex Bolts [14] and Lock
Washers [12]. Then remove and set aside the Bare
Lower subassembly. Also remove the Lower Body [4],
Muffler [17], and Diffuser Plate
[16] .
2
If the air motor subassembly will not be repaired
immediately, re-attach the Lower Body [4],
Muffler [7], and
Diffuser Plate [16] to the Air Motor
subassembly, temporarily securing them with the 5/16"
Bolts [14] and Lock Washers [12], turned hand tight.
Remove the assembly from the vise.
3
For further disassembly, use the separate
procedures which follow for the Air Motor and
Lower Pump subassemblies.
Air Motor Disassembly Procedure:
Figure 5
4
If the Lower Body [4], Muffler [17],
and Diffuser Plate
[16] are attached to the Air Motor subassembly,
NOTE:
The air motor is lubricated with a
life-tested synthetic grease (P/N 826733) at
the factory. This grease coats all parts and
repels air line moisture to inhibit corrosion. It
is imperative that any grease removed during
maintenance be replaced afterwards. Contact
your local Balcrank distributor, using the above
part number, for replacement grease.
Pressure Relief Procedure:
Follow this procedure whenever you shut
off the pump, when checking or servicing
any part of the system and when installing,
cleaning or changing any part of the system.
1) Disconnect the air to the pump.
2) Point dispensing valve away from
yourself and others.
3) Open dispensing valve until
pressure is relieved.
WARNING
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