To load grease into a Lincoln grease gun, choose between cartridge or bulk loading, assemble the gun, prime to purge air, and verify a steady flow from the nozzle.
This guide explains the two common loading methods for Lincoln grease guns, provides step-by-step instructions, and includes safety and maintenance tips. Always refer to your specific model’s manual for model-specific details.
Choosing the loading method
Most Lincoln grease guns support cartridge loading and bulk loading. The method you use depends on your model and the type of grease you have on hand. Cartridge loading is quick and clean; bulk loading is economical for large volumes or greases not sold in cartridges.
Cartridge loading
The following steps apply to Lincoln grease guns designed for standard 14- or 16-ounce cartridges. Gather a new cartridge, a clean rag, and any required accessory tips.
- Park the gun and remove the head from the barrel to access the cartridge chamber, usually by twisting or unscrewing the barrel-to-head connection.
- Discard any old grease and wipe the interior clean to prevent contamination.
- Inspect the plunger and seal; replace worn parts if needed to prevent leaks.
- Cut or remove the top plastic seal from the new cartridge and ensure the foil seal is intact until installation.
- Insert the cartridge into the barrel with the open end facing the plunger, pushing it gently until it is seated.
- Reattach the head to the barrel, ensuring a secure connection.
- Use the plunger to seat the cartridge and begin pushing grease toward the head; you may feel resistance as the air is displaced.
- Prime by pumping the lever or trigger until grease begins to appear at the nozzle, indicating air is being purged from the line.
- If air pockets linger, slightly retract the plunger and repump until a continuous bead of grease flows without bubbles.
- Attach the proper nozzle tip and wipe away any excess grease from the gun and workspace.
- Test the discharge on a scrap surface before proceeding with actual work, then store the gun properly.
After cartridge loading, inspect for leaks and ensure the plunger operates smoothly. Clean the gun and the surrounding area to prevent contamination in future use.
Bulk loading
Bulk loading is used for Lincoln guns that accept grease from a drum or pail. This method avoids cartridges and can be more economical for large jobs. Gather the bulk grease, a clean bucket or pail, and any required fittings or hoses.
- Open the end-cap or fill plug at the base of the barrel to access the interior.
- Pour or attach a fill line and fill the barrel with grease up to the recommended level, avoiding overfilling to prevent plunger binding.
- Reinstall the end cap or fill plug securely to seal the barrel.
- Reattach the head to the barrel, ensuring a solid connection.
- Operate the plunger to push a small amount of grease into the head to establish a seal and begin priming the system.
- Prime the gun by pumping until grease flows steadily from the nozzle, continuing until there are no air pockets in the line.
- Wipe off any excess grease and perform a test discharge on a scrap surface before starting work.
Bulk loading requires careful attention to cleanliness and seal integrity. After use, reseal the container and clean the workspace to prevent contamination.
Safety and maintenance
Adhering to safety and maintenance practices helps extend the life of your Lincoln grease gun and protects you from mess or injury.
- Wear eye protection and gloves to guard against grease splatter and contaminants.
- Keep the workspace clean to avoid introducing dirt into the grease lines.
- Use the grease type and viscosity recommended by Lincoln for your model and application (generally NLGI #2 for standard automotive and industrial use).
- Check seals, O-rings, and the plunger for wear; replace worn parts as needed.
- Wipe the nozzle and gun after each use to prevent buildup and ensure smooth operation.
- Store the gun upright in a clean, dry area; purge air if the gun will be unused for extended periods.
If you encounter persistent leaks, air pockets, or inconsistent flow, consult the model-specific manual or contact Lincoln support for guidance on parts diagnosis and service.
Troubleshooting quick tips
Common loading issues and quick fixes can help you keep operations running smoothly:
- Air bubbles in the grease line: re-prime by pumping slowly and ensuring the plunger is fully seated.
- Grease remains hard or won't flow: check grease temperature and viscosity; warm the container slightly if recommended by the grease manufacturer.
- Leaks around seals: inspect O-rings and head/barrel connections; replace worn seals.
Following these checks can prevent downtime and extend the life of the tool.
Summary
Loading a Lincoln grease gun involves selecting a cartridge or bulk method, preparing and assembling the gun, priming to purge air, and testing the flow from the nozzle. Always consult your model’s manual for any model-specific steps, use the correct grease type, and perform regular maintenance to keep the tool in good working order.
Are you supposed to push the rod in on a grease gun?
Valve. Now once I've put some pressure on it. I can rotate the follower rod. And it'll go right back in. And now start pumping and sure enough uh grease is now moving through the hose.
Which way does a tube of grease go in a grease gun?
Pull that down. Then if you take a pair of pliers. You can grab this old grease tube. Pull that out of there throw it in the trash. Make sure this is pulled down all the way.
How do I load a Lincoln grease gun?
Air use enough to cover both ports. Screw the head of the grease gun back on clockwise until it's tight loosen by a half turn to release. Air release the plunger rod from its locked position and push.
Why won't my grease gun fitting come off the fill port?
And you just twist. She comes right. Off. It might take a couple times you might have to work it a little bit but the secret is to tilt it. And to turn while you're tilting.