how to get grease in a stopped up bushing?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by 3strucking, Aug 15, 2008.

  1. 3strucking

    3strucking Bobtail Member

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    Nov 5, 2007
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    i have a 1993 peterbilt 357 dump truck with hendrickson rear suspension. i have 2 grease fittings that wont take grease. one is the spring bushing at the top front rear springs, and the other is right in the middle of the rear suspension. i have put new fittings in and also i have a tool that you put lightweight oil in and hit it with a hammer, it is suposed to free up the clogged area. i have tried everything that i know of and still cant get them to take grease. anyone have any tricks or ideas?
     
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  3. Otter

    Otter Light Load Member

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    Heat the area with a torch, while applying greese.
     
  4. SPIKE 64

    SPIKE 64 Light Load Member

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    San Antonio tx.
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    Also what I've tried is place the jack where you can take the weight off the suspension then you can grease it,A couple of good hit's on the outside housing around the grease fitting with a heavy sledge would'nt hurt.Also don't skimp on the grease get some good hi-temp grease which is a little thicker than the all-porpose.Hope this help's!!
     
  5. droy

    droy Heavy Load Member

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    Another vote for the torch;
    I can't remember when that DIDN'T work!
     
  6. cumminsvolvotech

    cumminsvolvotech Bobtail Member

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    Aug 23, 2008
    Denver, CO
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  7. Ducks

    Ducks "Token Four-Wheeler"

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    Dang, I had to google "zerk". I feel so learned now. :biggrin_255:
     
  8. Baack

    Baack Road Train Member

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    Care to share?????
     
  9. Ducks

    Ducks "Token Four-Wheeler"

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    According to my sources (which I add to sound professional here), it's the fitting through which you can grease a mechanical joint. :biggrin_25519:
     
    Big Duker and Baack Thank this.
  10. gearjammer-2000

    gearjammer-2000 <strong>Clutch User</strong>

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    columbus Ohio
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    what you are doing when you force the grease in is forcing whatever is stopping it up in to the bushing where it will cause the bushing to wear at an accelerated rate, [learned that the hard way on my backhoe]

    take a can of starting ether add the nozzle from a can of wd 40, add the little tube, remove the zerk and flush the hole out with ether sometimes you need to use a thin nail to get the worst out first but flush it well, then add a NEW zerk and grease as normal.
     
    NadeauTrucking, Who and Baack Thank this.
  11. kent0242

    kent0242 Bobtail Member

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    Feb 26, 2008
    Metro Detroit, MI
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    Combining various elements of the previous replies should do the trick. I had a couple fittings on a dozer that wouldn't take grease. I removed the zerk fitting, dug out all the old and hardened grease from the grease cavity and the zerks with the end of a nail, replaced the zerks, heated the bushing area with a torch and pumped fresh grease into the zerks.

    When I see or hear of old equipment that won't take grease, it is often because of poor maintenance. This includes missing certain areas during preventive maintenance, as well as failing to cycle equipment on a regular basis. You can't just park it out on the 'back 40' and expect it to start and run like a clock 6 months later. Regular use and maintenance is a key factor in equipment uptime.
     
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