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First Cafe Racer Mod! 1983 XJ750 Maxim

Discussion in 'XJ Modifications' started by May_J_Aaron, Jun 24, 2018.

  1. May_J_Aaron

    May_J_Aaron Josh May

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    Now that I know it’s DOT approved, it’s a sealed unit with the 3 prong setup, should I be ok?
    I’ve seen MANY LED Headlights with the same 3 prong plug but state it’s for Harley’s and a list of specific bikes... and some that they would not fit, could they be referring to fitting within a bucket size and style?
    My concern at this point is just the plug which “appears” like it would connect.
     
  2. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    I can't speak for that specific unit, but generally the plug will be correct, but clearance in the bucket may be an issue. Another thing that sometimes comes up is the retention tabs on the bulb not being correct for the socket.
     
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  3. May_J_Aaron

    May_J_Aaron Josh May

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    1. Clearance for wires?
    2. Good to know about the clips, I will probably put a zip tie on just in case!
     
  4. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Clearance for the whole thing, with enough air space so the wiring doesn't get cooked.
    From the few instances I've had to deal with it, either the bulb tabs, or the bucket slots might need to be trimmed (mind you, that was just on an aftermarket LED bulb). A zip-tie would just end up melting, and not provide a secure hold.
     
  5. May_J_Aaron

    May_J_Aaron Josh May

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    Oh! So the heat from the Bulbs could melt everything... never thought of that!
    Does LED get drastically hotter than the stock incandescent?
     
  6. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    The LED lights that are good do generate a quite a bit of heat, and require quite a large heat sink to get rid of it.
     
  7. May_J_Aaron

    May_J_Aaron Josh May

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    Uh oh,I forgot to take a picture....
    What is the orientation of these shims?
    I can’t find anything in the group or online.

    1. The long shim has a mid area that is wider than the other side, which one is closest to the Caliper piston.
    2. I think the C-shaped one goes on the side of a brake pad but I have no idea which side and the way it’s orientated!
    image.jpg
     
  8. Chitwood

    Chitwood Well-Known Member

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    The c shape one should go on the fork leg where the inner pad sits. Put a thin layer of brake grease on it where the pad will ride, the other goes inside the caliper to put a little pressure on the top sides of the pads. As to it's correct orientation I'm unsure but possible it only fits one way?
     
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  9. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    The Maxim 750 brakes are quite a bit different from the Maxim 650 brakes (and there are two types of Maxim 750 brakes for some special bonus fun). That "c" shaped shim acts as the bearing surface between the caliper and the caliper support bracket. It only fits on one way.

    The anti-rattle shim (lowest in the photo) does fit above the pads in that hollow. It doesn't quite look like it's the correct one, but if it fits it should work fine.

    There should also be an anti-squeal shim that goes on the back of the pad the contacts the piston.
     
    Last edited: Jul 20, 2018
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  10. May_J_Aaron

    May_J_Aaron Josh May

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    Ah Ha!
    Thanks K-more! That C shaped one does go on the bracket, totally made sense after you mentioned it!

    The long one on the bottom does fit, but from an analytical point of view, I would think that the skinny side would be towards the piston to encourage the brake pad to pull away from the rotor but only the thick side fits towards the piston.... could it be the thickness of the paint or just not meant to go in that way??? @chacal

    I have 1 anti rattle shim on a brake pad, shucks I just put in an order with a Chacal too, I may have to include it in my next one...
    image.jpg
     
    Last edited: Jul 20, 2018
  11. May_J_Aaron

    May_J_Aaron Josh May

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    Uh oh, I’m replacing the bearings and the axle spacer fell out, which side does the side with the lip go on?
    Ride side or left (speedometer cable side)

    4E8D29A5-7B8B-4CE3-B081-0A4B55BA3DFC.jpeg
     
  12. turpentyne

    turpentyne Active Member

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    I believe you have it facing the right way, on right side, but I don’t know if there’s a difference between 82 and 83.

    Go to the 8:30 mark on this video for comparison. Maybe it helps:
     
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  13. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Your orientation in the pic is correct, all models, all years.
     
  14. May_J_Aaron

    May_J_Aaron Josh May

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    Thank you guys!
    I have the new bearings in and everything looks good.
    The lip didn’t appear to touch anything so I have no idea what's the purpose of it!

    I did notice my axle shaft is not 100% straight...
    Doubt that’s normal but this bike only has 14k miles...
    Do they normally have a minuscule arc to them?

    https://vimeo.com/user87851083/review/282163443/100fb2ff37
     
  15. Minimutly

    Minimutly Well-Known Member

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    You know the answer to that surely?
    Noooooo
     
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  16. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    That is indeed bent. Start checking the fork legs for similar damage, and the wheel for cracks.

    The collar on the inner spacer rests loosely against the bore once it's installed to keep the spacer centered in the wheel for axle insertion. Without it the spacer can end up cockeyed.
     
  17. May_J_Aaron

    May_J_Aaron Josh May

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    Can there be damage to components I couldn’t see internally within the forks? I’m about to do a rebuild with Progressive springs, anything in particular that would take that kind of impact?

    Checked the wheel and forks, they both look good
     
  18. May_J_Aaron

    May_J_Aaron Josh May

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    Small side track before I make a big purchase from @chacal , does this thing have a name? It’s the airline between the forks...
    Can’t find a diagram with the name of it anywhere!
    C71CD858-C6ED-4C42-B49D-5DB5570765A7.jpeg
     
  19. turpentyne

    turpentyne Active Member

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    Last edited: Jul 30, 2018
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  20. May_J_Aaron

    May_J_Aaron Josh May

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    Huge curveball!
    After talking with Len, he believes these belong to a different year, they’re currently on 83 Maxim XJ750.
    Len suspects they’re an 82 Maxim 750 set but the caps didn’t match the 82 example he sent me.
    Anyone know what these belong to?!
    I also found the forks were stamped with “Y75R”

    DDD8B33B-D72C-451E-B440-56BA40A0723A.jpeg
     
    Last edited: Aug 1, 2018

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