Why grease coupler stunned at the grease nipple after lubrication?

[Sandro Danilo]

I bought a grease coupler to lubricate my machine.But after lubrication it is really hard to take out?
Any good solution?
I have to break it so it can be taked out.
It is really a problem.

 

[holwellcourtfarm]

It's pressure trapped in the fitting that is holding it on. If the grease nipple and shaft are clean the grease flows in freely and the connector comes off easily afterwards.

In my experience the connector will always come off if you tug it hard enough.

If the problem persists then the nipple and shaft need cleaning.

 

[traineefarmer]

It could just be a sticky coupler or one with a manufacturing fault. On some you can unscrew the upper section of the coupler to replace the seal and this will also release the pressure on the jaws to enable removal.

 

[clbarclay]

Does it do it on all nipples?

I have only had that happen with greasing things where the nipple or area behind it is blocked and the grease can't get where it needs to go, maintaining high pressure in the coupling.

 

[tomlad]

Id agree, pressure is being held , some couplers u can adjust the clamp force, as to how tight it locks on the nipple