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  1. #1
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Pump alignment problem. Need advice

    94 SL 650/750 conversion. Had my local mechanic do the conversion and all new crank seals, needless to say the engine came out. I didn't know how many shims the mounts had and where. I took the ski out twice, very briefly last summer since the rebuild. (1.5 hrs total) I'm now trying to align the pump for a spacer addition using BD's alignment tool and check the accuracy of my laser. Here's the problem... 1 shim on rear carb side mount, 0 shim on rear exhaust side mount, 4 maybe 5 shims on carb side front mount, and 4 maybe 5 shims on exhaust side front mount. The tool is hitting the bottom of the coupler (not even in the splines yet) and I need to drop the rear of the engine. Any more shims up front and I'll be binding in the splines for sure. Anyone got a suggestion on solving this?


  2. #2
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    If you have access to a mill, fly-cut around .020" off the bolt perchs on the bed plate.

  3. #3
    ph2ocraft's Avatar
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    Check the seating area of the tool/pump on the hull. Sometimes if the hardware is overtightened it deforms the hull and the pump doesn't sit in the correct angle anymore.
    I've had to shim the lower portion of the hull/pump area or fill the hull where it's damaged and then get it flat again.
    Anyway a couple of suggestions.

  4. #4
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Thanks guys. I am known for over-torquing bolts and it does seem the angle on the back end is off. The shaft is sitting low in the through hull sleeve. I'm gonna try shimming the pump before I remove the bed plate.

  5. #5
    ph2ocraft's Avatar
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    If you shim it, it's just telling you there is an issue in the area and the correct way to repair it is to repair the hull.

  6. #6
    cheatin' piston popper addicted's Avatar
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    i have overtorqued the housing and milled the bed plate to compensate. live and learn I guess.

  7. #7
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Well shimming it worked,.the studs were digging into the fiberglass. Should I worry about patching the small divots? As a side note, I thought fiberglass in your skin was annoying. DAm, did I goof up! I Dremeled a little SS to start the night, big mistake!!! As my hands got greasy, I was picking up every sliver as I worked. I felt like I had pin cushions for hands, OUCH!!!!!

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