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  1. #1
    mtbr member
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    Jun 2008
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    367

    SWECO 480--Rapid Oil Loss...

    Greetings, all--
    The Trail Dynamics Sweco 480 recently experienced a rapid loss of engine oil (which fortunately was caught by the operator before loss of oil pressure!) that we traced to a failed fitting between the oil pressure sensor and the engine block. While we suspect that the fitting was stressed at some point in its (short) life, it's also possible that engine vibration stressed the fitting. Has any other Sweco 480 owner/operator seen a failure of the 90 degree fitting (1/4" NPT to 1/8" NPTM) between the oil pressure sensor and the engine block? Ours broke at the nipple under the swivel and was clearly a stress fracture... Thanks in advance for your comments!
    Regards,
    Chuck Ramsey
    Trail Dynamics

    Old assembly--swivel and flare broke off. allowing engine oil to be pumped out of the pressure sensor line at the engine block...

    Old Sensor.JPG
    Last edited by TrailZen; 07-18-2008 at 09:31 AM. Reason: adding photo...

  2. #2
    Builder of Trails
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    Feb 2004
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    772
    Chuck,

    I'm here at Raystown Lake with Bill Blythe and Michael Burton and asked Bill about your issue. He stated that he hasn't experienced that problem before and noted that the fitting undergoes a tremendous amount of vibration, which had to have contributed to its weakening.

    Sorry I couldn't be more helpful.

    D

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