Questions about the plunger
pgk pgk | 16/05/2021 16:18:08 |
2661 forum posts 294 photos | Once a grease gun is loaded or cartridge replaced then the plunger is released. I'm too dense to see how/why is can fully retract into the gun body with a full cartrdge....?
pgk |
Dave Halford | 16/05/2021 16:43:42 |
2536 forum posts 24 photos | Are you talking about the plunger that sticks out the back end that you pull out to load the gun? It doesn't, mine works in as the grease is used. |
Dalboy | 16/05/2021 17:12:49 |
![]() 1009 forum posts 305 photos | With a grease gun there is a spring behind the rubber seal that pushes against the grease in the tube however the lever that you pull to load the gun only pulls the seal back and then can be pushed in but the seal/plunger only pushes the grease through the spring pressure and works down as the grease is used |
Georgineer | 16/05/2021 18:09:17 |
652 forum posts 33 photos | Pgk, I have two different types of grease gun. One has the nozzle and main body in line, and the grease is expelled by pressing on the end of the body. The other has the nozzle offset at an angle, and a trigger to expel the grease. There may be other styles of grease gun as well. Could you make clear which type you are asking about, possibly with a picture? George B. |
Nicholas Farr | 16/05/2021 18:23:15 |
![]() 3988 forum posts 1799 photos | Hi, just as Derek has said, simple really, your plunger rod just has a small flange on the other side of the plunger to pull it back. Regards Nick. |
old mart | 16/05/2021 18:35:17 |
4655 forum posts 304 photos | Some of the older types og grease gun have a rod that pulls the plunger back and some have a chain. When the body of the gun is full of grease you hitch the rod or chain into the keyhole slot to hold it there temporarily. The halves of the gun are screwed back together and then you can release the chain or rod and stuff the chain or push the rod back into the gun body. The chain type fit with a bayonette fitting. The spring loaded plunger then keeps the grease pressing lightly on the pump mechanism to stop airlocks developing. At work, we used a couple of AEROSHELL greases, 7 and 22 for lubricating aircraft parts. When a gun was empty we used to ask an apprentice whether he knew how to refill the grease gun. Sensible ones asked how and were shown, the bigheads who thought they knew everything were heading for a messy accident. The cartridge type are nicer to use and load like a mastic gun. |
pgk pgk | 16/05/2021 19:04:40 |
2661 forum posts 294 photos | OK I think I get it now. have 2 guns .. one cylinder with single side lever and valve/ air release and nozzle socket in the head and a second small Hilka one-handed trigger gun again with all the bits in the head. Both load similarly |
Adrian 2 | 16/05/2021 19:05:25 |
104 forum posts 19 photos | I have a tecalemit plunger type gun, the spring is strong. If stored with the spring extended the grease will gradually find its way past the piston and fill up the cavity behind it. Next time the spring is compressed , grease is ejected out the wrong end of the gun. You know how I know this !! It goes against the grain to store it with the spring compressed but that solves the problem and saves a hell of a mess. Adrian. |
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