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  1. #1
    BobL is offline Member: Blue and white apron brigade
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    Feb 2006
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    Perth
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    Default compressed aiir powered grease gun

    Last weekend I was working on the bearings for the Band saw mill and needed a grease gun with bearing grease. I have a grease gun thats full of sliding grease and I had another with bearing grease and loaned it to someone and it didn't seem to come back. So I went to supacheeps and had a look at getting another grease gun. In a fit of sheer stupidity I bought a compressed air powered gun and I am blowed if I can get it to work. Fortunately it came with a manual pump as well which works fine. Before I return it does anyone have a clue how I might get it to work?
    I have carefully remove all the air from it. Do they work better with cartridges than bulk grease?

    What is really frustrating is early this morning I was rattling around in a corner of the shed looking for something else and I found the other grease gun!

  2. #2
    Join Date
    Jan 2014
    Location
    Northern Beaches, NSW
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    288

    Default

    Not sure if I can help with your Supercheap one Bob, but my McNaught one works a treat. I have a cartridge in mine but when using bulk fill grease I just need to flip the seal over at the plunger end. At the business end there is a spring loaded ball bearing air-valve that needs to be pressed whilst you pull the trigger several times after you've filled it up to release the air that gets trapped on filling. Once the air is all out don't need to touch it until re-fill time.

    I don't know if all air grease guns are all more or less the same but I have attached the instructions that came with mine - it may be of help.

    McNaught Grease Gun Manual.pdf


    R
    J

  3. #3
    BobL is offline Member: Blue and white apron brigade
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    Default

    Quote Originally Posted by ventureoverland View Post
    Not sure if I can help with your Supercheap one Bob, but my McNaught one works a treat. I have a cartridge in mine but when using bulk fill grease I just need to flip the seal over at the plunger end. At the business end there is a spring loaded ball bearing air-valve that needs to be pressed whilst you pull the trigger several times after you've filled it up to release the air that gets trapped on filling.
    Ah ha - I have seen that little blighter and wondered if your method might be required!

    Once the air is all out don't need to touch it until re-fill time.
    I don't know if all air grease guns are all more or less the same but I have attached the instructions that came with mine - it may be of help.
    Thanks for the tip - you think they would put that in the destructions - Yes I did read them

  4. #4
    Join Date
    May 2012
    Location
    Kimberley, West Australia
    Posts
    176

    Default Air Power!

    Beware those air powered grease guns. Greatest device for overfilling bearings, blowing out seals and putting grease where it does not belong.
    Fitted air powered volume guns to our cable excavators for lubing the unsealed track gear, but of course operators had to try using them on other parts. After several rounds of blown seals and grease through clutches and brakes, operators were forbidden to use them on anything but tracks. With a pistol grip or lever gun you can feel slight resistance when a bearing is full, or watch for the appearance of a small amount of grease on unsealed bearings. Never felt the need of air power to grease most equipment, and most modern gear is greased at far longer service intervals than the old stuff.
    Still have bad memories of stripping out all the deck machinery and relining all clutches and brakes on a 50 ton shovel that was the victim of an air greaser.
    Combustor.
    Old iron in the Outback, Kimberley WA.

  5. #5
    BobL is offline Member: Blue and white apron brigade
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    Feb 2006
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    Perth
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    Default

    Thanks for the tip combustor. The machine I'm looking at using this grease gun is on a small band sawmill where there are some sliding surfaces fed by grease nipples. There are 8 bearings none of which are "sealed" as such, just covered. and the grease is used to regularly flush crud out of them.

  6. #6
    Join Date
    May 2012
    Location
    Kimberley, West Australia
    Posts
    176

    Default Air power!

    Hi again Bob,
    Sounds like you have the right tool for the job now. Regards,

    Combustor.
    Old iron in the Outback, Kimberley WA.

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