How to Load a Grease Gun Cartridge

Avoid air locks and your grease gun will always work.

Loading a new grease cartridge seems easy enough. But if you don't do it right, an air lock might keep grease from coming out when you pump the gun. Removing an air lock can be frustrating. Here's how to avoid them—and how to get rid of them if you're reading this too late.

By the DIY experts of The Family Handyman Magazine

Load first, burp second

Prevent air locks by filling the grease gun head before adding the new cartridge (Photo 1). Insert the new cartridge and screw on the barrel until it seats against the head. Then back it off two turns and release the spring tension. The remaining air should bleed out through the loose threads. Finish tightening the barrel.

If you've done that but still have an air lock, remove the plug (Photo 2).

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You'll need a grease gun and latex gloves.

Required Materials for this Project

Avoid last-minute shopping trips by having all your materials ready ahead of time. Here's a list.

  • Grease cartridge