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  1. K&C Speed

    Prestolite single solenoid trim pump

    Ok Thank you.. I’ll follow up on that.. sure would be nice to finish upon this.. want to get this thing on muffs to see if she’ll run
  2. K&C Speed

    Prestolite single solenoid trim pump

    Ok.. changing the trim system with the newer style plastic tank eliminates the reverse lock valve problem.. I assume you just plug the fluid lines that run into it. Do you also have to change out the rams to the newer alpha 1 type? What trim senders can be used? Would need to know what all...
  3. K&C Speed

    Prestolite single solenoid trim pump

    Here’s a pic of the lock valve and micro switch
  4. K&C Speed

    Prestolite single solenoid trim pump

    So… I was able to get the leg to go up and down in neutral and reverse. I wasn’t able to get the leg to trim up while in forward. I can’t figure out how to engage the micro switch on the reverse lockout so I can trim up.. there is not enough adjustment on the reverse lock out arm without...
  5. K&C Speed

    Prestolite single solenoid trim pump

    I was able to adjust the reverse lock out so the Trim up/out can now be operated while in neutral. The micro switch is now closed in neutral completing the circuit. I was able to trim up a little but hydraulic fluid was pouring out of the bottom of the trim motor valve body. I have an O ring kit...
  6. K&C Speed

    Prestolite single solenoid trim pump

    Ok on the Shifter.. Think I'm going to pull the trigger on a new solenoid. Thanks
  7. K&C Speed

    Prestolite single solenoid trim pump

    Thank you for the wiring schematic. It appears as though I have wired it correct. In the photo I have ran a Jumper wire to bypass the limit switch. I’m starting to think the solenoid has gone bad. I also found a crack in the plastic terminal block that the wiring from the power trim motor wiring...
  8. K&C Speed

    Prestolite single solenoid trim pump

    Good Day I'm looking for help on my old Prestolite trim pump 1977120 Mercruiser MC-1. I had everything off and apart to rebuild my transom. I reassembled the trim assembly, wiring and hydraulic lines what I believe to be correct. The leg trimmed down ok. but not up.. Won't go up in neutral...
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