Pneumatic grease gun Question

[LSU]

I have an old (15+ years) Craftsman pneumatic grease gun. I only use it to grease the wheel bearings on my boat trailer. My trailer has the E-Z lube Spindles. Not the Buddy Bearings.

My gun works fine in spite of not getting used much or getting much attention from me. .

Any suggestions on what the correct air pressure setting on my compressor should be? I am worried that with the gun getting older I might need to dial the PSI back.

Thanks.

 

[dr.gizmo]

90 PSI is the usual specification used for most pneumatic equipment.

 

[txvwnut]

If you haven’t been using low air don’t bother with changing it now. The older these guns get the stickier they get, although my 30 year old Sam’s grease gun still operates on whatever air pressure gets.