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  1. 12th December 2013, 08:43 PM #1
    meadow street
    meadow street is offline Senior Member
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    Jul 2013
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    nsw
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    Default hydraulic pipe bending probs

    got some issues with a hydraulic pipe bender.

    the ram won't hold pressure and maintain height.

    12 tonne jack essentially. gasweldjobby

    new dedicated bender jack is 120$, so I'm hoping this one can be fixed?

    can jacks be fixed?

    what usually goes in them?

    history:

    fairly heavy pressures
    exposed to heat while strengthening the base palate with welded sole

    plus re welding roller arm supports - blew the welds apart.

    just a query

    meadow street
  2. 12th December 2013 08:43 PM # ADS
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  3. 12th December 2013, 08:50 PM #2
    Michael G
    Michael G is offline Philomath in training
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    Default

    If the ram won't hold pressure or height then the chances are that a seal has gone in side and oil is bypassing the piston.
    If you can get in the ram you can probably replace the seal.

    Michael
  4. 12th December 2013, 09:28 PM #3
    pipeclay
    pipeclay is offline GOLD MEMBER
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    Default

    On some of these jacks there is a steel ball that acts as a valve seat on a chamfer, sometimes if you remove the plunger you can give the ball a hit with a punch/piece of steel rod to try and reseat it if that is the problem.
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