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Doing the 750 Seca's Forks.. (Rebuild.. now a HOW TO!)

Discussion in 'XJ DIY How-To Instructions' started by Chorca, Jun 11, 2009.

  1. Zeb

    Zeb New Member

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    There are two spacers. the lower one is kinda curved inward. I was unsure whether I could leave these out, but you have eased my mind. Thank you.
     
  2. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    I think that was a way of making a 1mm thick piece of metal displace 3mm of vertical space, by "cupping" the outer edges so it "stands up" an extra 2mm in height..........
     
  3. Rooster53

    Rooster53 Well-Known Member Premium Member

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    I can't recall exactly what I did as it was 8 years or so ago that I did the fork seals. I may have had the original seal at the time, although one thing I do remember is it seemed like it was taking a bit more force to get that seal to clear for the snap ring. It's a bit odd that it hasn't come up before at least to my memory.
     
    Last edited: May 17, 2021
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  4. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    That's the understatement of the year (the decade? millenium?). No one has ever asked me about it either, and we've sold lots of them.........we all owe a round of thanks for asking the question and bringing this issue to everyone's attention!
     
  5. StarGeneral

    StarGeneral Active Member

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    @chacal Nope, I assumed the new seal was designed to use the original washers. I smashed the hell out it until the snap ring fit in there :(
     
  6. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    Yikes! Send me a note, we'll see what we can do to solve this problem!
     
  7. Johnius

    Johnius Member

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    Alright, I went the "keep the brake lines sealed" route for this operation and it dawned on me that I don't know how to fill the forks while they're installed (or half installed) because there's not enough brake line to allow the fork back into the triple tree with the antidive attached. Does anyone have any advice? I'd rather not bleed the brakes, but if that's the way it is, that's the way it is.
     
  8. k-moe

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

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    You can fill the forks while the fork caps are off and installed into the triple tree. Just don't tighten the upper pinch bolts until after the fork caps have been reinstalled.

    So, with the handlebars removed:
    1: collapse the fork legs as needed for slack in the brake line.
    2. Install the fork legs into the triple tree.
    3. snug the lower triple tree clamps just enough to hold the upper fork legs.
    4. Install the fender and wheel (leaving the axle nut and pinch bolt loose).
    5. Fill the fork legs with oil.
    6. Install the springs and fork caps.
    7. Give the front end a few good bounces to settle everything into place.
    8. Check for gaps at the axle spacers.
    9. Tighten the axle nut, followed by the axle pinch bolt and triple tree clamps.
     
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  9. Johnius

    Johnius Member

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    Got it. Each system (fork oil and brake fluid) has a sealed piston as shown in this video: , so you can break the antidive units at the 4mm allen bolts without compromising the systems. Thanks for getting back to me, k-moe!
     
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  10. Love N

    Love N New Member

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    Hi guys,

    Is the damper rod supposed to stick out from the bottom of the chrome tube? My rod doesn’t. That means that I can’t reach the threads with the bottom (locking) bolt.
    Anyone know what the problem could be?
     
  11. Johnius

    Johnius Member

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    It should stick out a good bit. Did you get all of the washers out of the bottom? Mine were covered in old, sticky oil and were a pain to get out. There's a picture in the OP that shows they stick out a lot.
     
  12. Love N

    Love N New Member

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    I probably didn’t get everything out then‍.
    Do you know (prefer pics) what should follow the rod out?
    Tips of how to get it out?

    750 seca -83
     
  13. Johnius

    Johnius Member

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    Look through the second post for pics. There should be two thin washers (one with a bend in it), a chamfered ring, a spring, and a valve body with a plastic ring. I put a carpet on my concrete garage floor and gave it a few taps. I blew the whole thing clean with brake cleaner, so that might loosen stuff up, too.
     

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