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Yet another way to fill a Dualco grease gun

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Yet another way to fill a Dualco grease gun

Old 03-21-16, 03:01 PM
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Yet another way to fill a Dualco grease gun

Dualco grease gun

If you have a cartridge-type grease gun on hand (3 oz or 12 oz), you can fill a Dualco with it and avoid much of the mess. Remove the tip of the Dualco, take out the small spring and BB that's behind the tip - note their orientation in the Dualco. Remove the Zerk tip from the larger grease gun hose or tube end, and thread the gun into the Dualco where the tip goes. (Yep, it's the same size and threading) Pump the larger gun until the Dualco is full.

If the Dualco is brand new, remove it's reservoir (the bottom part), pump some grease into the top (as described above), spread it out to fill the top cap of the Dualco (you're eliminating empty air space), be sure the "follower" (the moveable bottom in the Dualco reservoir) is all the way to the top, reattach the reservoir, and fill. This step isn't necessary for later refills.

Don't forget to reinstall the BB, THEN the spring in the original positions before reinstalling the Dualco tip. It won't work w/o them.

If the weather would clear up I could ride instead of tinkering in the garage...

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Last edited by melloveloyellow; 03-21-16 at 05:15 PM. Reason: ..clarity
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Old 03-21-16, 04:42 PM
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Back 50+ years ago when I worked at a gas station, the boss had simply installed a Zerk fitting to the business end of a grease gun.
We'd just use the air powered greaser to reload the portable gun when needed.
The portable was handy for U joints and such where you didn't want to risk blowing out the seals.
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