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Read and carefully observe these operating
instructions before unpacking and operating
the air grease gun. The gun must be oper-
ated, maintained and repaired exclusively by
a person familiar with the operation instruc-
tions. Operate the gun only after safety
instructions and this operation manual are
fully understood.
W A R n I n G
Extreme pressure may cause whip hose
to burst. Use only Lincoln approved hos-
es and follow the hose instructions and
warnings.
W A R n I n G
Use safety glasses and gloves for protec-
tion during operation. Keep hands clear
of the exposed rubber portion of hose.
Grease gun can develop high pressure
up to 6,000 psi (414 Bar).
This grease gun generates high grease
pressure. Extreme caution should be used
when operating the gun as material leaks
from loose and ruptured components can
inject fluid through the skin and into the
body causing serious bodily injury.
Adequate protection is recommended to
prevent splashing of material onto the skin
or into the eyes.
W A R n I n G
If any fluid appears to penetrate the skin,
get emergency medical immediately.
Do not treat as a simple cut.
Tell attending physician exactly what
fluid was injected.
Personal safety
1 Always wear eye protection. The air
grease gun can generate up to 6,000 psi
(414 Bar) of pressure.
2 Use only Lincoln P/N 1218, 1224, 1230
or 1236 outlet whip hoses. Grease injec-
tion injuries are a very serious injury.
Hold the hose only in the area of the
spring guard.
3 Avoid accidental starting. Be sure trigger
is not depressed when attaching inlet air
hose.
4 Do not bend the hose in small radii.
5 Replace the hose at the first sign of wear,
kink or damage to the outside jacket.
Quick start
instructions
1 Attach high pressure grease hose and
coupler (1) to outlet in the head (5).
Copper gasket must be used to seal hose
thread to head. Tighten securely.
2 Attach air coupler nipple (21) to port in
bottom of handle (6) and tighten securely.
3 Fill grease container († page 6 for vari-
ous options).
4 Prime grease gun by operating slowly un-
til grease flows from coupler (2)
(† Operation section, page 5) for
detailed priming procedure.
5 Adjust air pressure to grease gun as
required, and gun is now ready for use.
6 Disconnect air supply to grease gun when
not in use.
3
Description
Lincoln Air Operated Grease Gun is fully
pneumatic operational and automatic unit.
The gun was developed for manual lubrica-
tion of the grease points and has ability to
stall in case of a blocked bearing, fitting or
lubrication line. The gun is a positive dis-
placement single action pump that delivers
lubricant each time the plunger (13) moves
forward.
The gun features a throttling trigger valve.
A slight pull of the trigger (8) will cause the
gun to operate slowly. As more finger force is
applied to the trigger, the speed of the gun
will gradually increase until maximum speed
is reached with the trigger fully pulled. The
maximum speed of the gun is limited to re-
duce the problems associated with dispens-
ing lubricant too quickly, such as damaging
bearing seals or dust boots.
The gun operates when the trigger (8) is
depressed. Air is admitted to chamber A
(† fig 1) and pushes the piston (7) with
the plunger (13) to the left. Vent valve B is
closed. The grease, under pressure from
plunger (13), opens the check valve (3)
and delivers one shot of the lubricant.
When the piston (7) reaches the bypass
groove C († fig 2) air is admitted into cham-
ber D and opens the vent valve B.
The air pressure from chamber A is vented
through valve B and vent holes E to the
chamber F which communicates with the at-
mosphere through the hole G. The air pres-
sure is equalized on both sides of the piston
(7) and the force of the spring (12) will re-
turn the piston to the initial position, re-
charging the gun († fig 1). Vent valve B will
be closed and air from chamber D is vented
through the bypass groove C to the atmos-
phere. The cycle repeats in the same man-
ner while the trigger is depressed.
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