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Thread: Trim cylinder replacement

  1. #1
    Join Date
    Jul 2012
    Posts
    2

    Default Trim cylinder replacement

    I have replaced upper and lower units with SEI 106 on my 1978 Mark Twain.
    I am now replacing the trim cylinders with 102 series.
    Do I need to worry about bleeding the system after I change out the cylinders or should the system handle that after I run them up & down a couple times and refill the system will oil?
    Also, what weight oil should I be using to refill?
    I know this isn't high tech but I would like to make sure I don't miss a step and damage anything.
    I don't want to have to buy a new pump this year too.
    Any advice is appreciated.Thanks

  2. #2
    Join Date
    Nov 2006
    Posts
    661

    Default

    The system is self bleeding, so install everything, top up the oil, run it up and down a few times, then top off the oil again. For fluid, you can just use ATF fluid.

    Tech Support

  3. #3
    Join Date
    Jul 2012
    Posts
    2

    Default

    Quote Originally Posted by admin View Post
    The system is self bleeding, so install everything, top up the oil, run it up and down a few times, then top off the oil again. For fluid, you can just use ATF fluid.

    Tech Support
    Sounds simple enough. If I use a Dexron III do I need to flush the entire system or just add to existing fluid?

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Sterndrive Engineering, Inc. (SEI) manufactures a stern drive designed to replace Mercury Marine's MerCruiserŽ Alpha OneŽ, R, MR, Gen II and Bravo OneŽ stern drives. MerCruiserŽ Alpha One, R, MR, Gen II and Bravo OneŽ are trademarks of the Brunswick Corporation. SEI has no affiliation with the Brunswick Corporation. Consequently, any warranties governing products and or sold by Brunswick Corporation will not apply to products manufactured and or sold by SEI, or to products damaged due to the operation of an SEI product.