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  1. #1

    Default transmission jumping out of gear

    Gray marine 109 transmission jumps out of gear at approx. 1200 rpm. I can pull the throttle back to idle and increase and transmission will start pulling again and wont jump out until I get back to 1200 rpms..any ideas???

  2. #2
    Join Date
    Mar 2009
    Location
    Portland, Oregon,
    Posts
    9,090

    Default Re: transmission jumping out of gear

    Preface;
    I know next to zero about this 109 transmision, so these are questions for you, rather than answers!

    Is this transmission using hydraulic pressure for clutch pack engagement?

    If so..... perhaps at 1,200 rpm the oil pump is starving, resulting in clutch pack disengagement!

    Is the oil level up where it should be???
    Any reason to suspect transmission oil pump issues???
    Any reason to suspect clutch pack issues???


    .
    Rick ... aka Ricardo..... AQ series Volvo Penta repair
    Portland, Oregon
    28' SDN F/B w/ twin Volvo Penta 5.7L DP's

    Please... no PMs! Post your questions on the forum.

  3. #3

    Default Re: transmission jumping out of gear

    is this a hydraulic or mechanical reverse gear??

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