17
7.
Purging the Air in Grease Chamber and Priming the Grease Gun: Priming is the act of removing air
and introducing Grease into the Grease Gun’s pumping mechanism. When filling the Grease Gun,
it is very important to prevent air pockets and to purge any air that may be trapped in the barrel.
Caution:
Air pockets in the lubricant will cause the Grease Gun to lose its prime.
In most cases
the Grease Gun will prime while pressing the Air Bleeder Valve and simply pulling 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 “T” handle, 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.
Grease Cartridge
Plastic Cap
Barrel
Twist
Figure 2
Figure 3
Figure 4
Barrel
Pull-T
ab Seal
