18
Possible Cause
Grease Cartridge or Barrel
is empty
Loss of Prime or Air is trapped
in the Grease Gun head
Rubber Seal is not placed in its
correct position, is damaged
or is missing
Initial tightening of Barrel into
Head Assembly not sufficient
or the Rubber Seal inside the
Head Assembly is damaged
or missing
Initial tightening of Hose
Extension into Head Assembly
and/or Coupler not sufficient
Filler Nipple may be loose
Worn Bleeder Valve “O” Ring
Worn out or damaged Gears,
Piston and/or bore in Head
Assembly
Problem
Grease Gun will not
dispense Grease
Grease Cartridge will
not empty completely
Also, if you are not sure
whether the Cartridge
is completely empty
or not
Grease leakage visible
between Barrel and
Head Assembly
Grease leakage visible
at Hose Extension or
at Head Assembly
Solution
Replace the Grease Cartridge or refill the
Barrel
Expel the trapped air, while pressing the
Air Bleeder Valve, and pushing the Plunger
(Follower) Rod handle or simply by depressing
the Trigger Switch several times in short bursts
until trapped air is expelled. Should Grease
fail to appear, the Head Assembly must be
bled. This could be done by unscrewing
the Grease Gun Barrel by couple of threads
and, applying slight pressure to the Plunger
(Follower) Rod, pushing it towards the head
assembly. Pull the Trigger Switch several times
in short bursts and the Grease should now
start flowing. If the Gun is now primed then
tighten the Barrel. Some Heavier Greases
may require this step of “Purging Air” twice.
Pull the Trigger Switch until Grease flows from
the Coupler.
Ensure that the Rubber Seal is in its correct
position and Tighten Barrel into Head
Assembly securely. Replace Seal, if damaged
or is missing
Push the Follower Rod into the Barrel as far as
it will go to move the Grease forward
Measure the Rod Handle from the end cap
on the Barrel to the tip of the Rod Handle. If
the measurement is more than 1-3/4”, the
Cartridge is not empty.
Tighten Barrel into Head Assembly securely
or replace the Rubber Seal
Tighten Hose Extension into Head Assembly
and Coupler into the Extension
Tighten Filler Nipple into Head Assembly
securely
Replace “O” Ring or Air Bleeder Valve
Time to replace Gun
TROUBLESHOOTING CHART
