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Xj750 CARBURETORS

Discussion in 'XJ Technical Chat' started by Codysc843, Mar 24, 2020.

  1. Codysc843

    Codysc843 Member

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    How quick is he from the time I order to the time it gets delivered?
     
  2. SQLGuy

    SQLGuy Well-Known Member

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    I'd guess about three days.
     
  3. Codysc843

    Codysc843 Member

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    So I've got the bike running but no front brakes and they wont bleed or build pressure on the lever never rebuilt these before any ideas on this matter yall? Easy fix rebuild tutorial etc..?
     
  4. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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  5. SQLGuy

    SQLGuy Well-Known Member

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    If this is the remotely mounted Seca master cylinder, be careful, because the seal where the reservoir attaches to the MC itself is not included in the rebuild kit, is not generic, and doesn't appear to be available as a replacement part.
     
  6. XJ550H

    XJ550H Well-Known Member Premium Member

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    Front brakes are also very difficult to bleed. There is a thread on it.
     
  7. Timbox

    Timbox Well-Known Member

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    If you are going to play with the brakes on the Seca, use PB blaster on the bleeder bolts on both sides of the forks. I think you have two bleeders on each side like mine does. Let that sit for a while, you don't want to brake them off. Before you pull the MC (and that will be fun) remove all the left over fluid from the MC reservoir using a small hose/tube. Refill with new DOT 3 and then try to bleed the system.

    I just did my Seca MC a few weeks ago, have fun taking the bad boy off the bike. You will have to pull the headlight and I think the gauges, maybe not the gauges hmmm. I was able to get mine in working condition by letting it soak in brake fluid and then just move the piston on the MC many times to get it to functions correctly.
     
  8. jayrodoh

    jayrodoh YimYam Premium Member

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    I believe his bike is a Maxim.
     
  9. XJ550H

    XJ550H Well-Known Member Premium Member

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    82 maxim
     
  10. Timbox

    Timbox Well-Known Member

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    Well then the MC is easy to get to.....my bad sorry about that.
     
  11. Codysc843

    Codysc843 Member

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    Hey yall I'll try pulling the brake master cylinder later today and see if I can get the brakes working broke the bleeder screw on one side I think it might have been reverse threaded but anyways now it's sorta capped off however the other bleeder screw loosens and tightens correctly so shouldn't I have a little front brakes temporarily until I get the other screw fixed?
     
  12. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    Bleeders are not reverse threaded. If your MC isn’t building pressure, you won’t have brakes. If the broken bleeder is “sorta capped”, it probably isn’t holding any pressure.... you probably won’t have brakes even if the MC is Ok. To me, “sorta capped” means “isn’t sealed”
     
  13. Timbox

    Timbox Well-Known Member

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    Have to take your time with these older bikes, use penetrating oil and let it do its job. Now you will have to ez out that bleeder or drill and tap it out. Hogfiddles is saying that if the bleeder is broken off the hollow middle portion of the bleeder could be open to the brake fluid. If you never mover the bleeder at all, it might well be seated all the way down and the bleeder hole at the bottom never cleared the wall edged to get to the fluid. So it will be sealed still. You can still work on the MC and the other caliber to get the MC to work. Clean all the old fluid out and make sure the little hole in the bottom is clear as well. The forth post on this page by Hogfiddles will show you how to do this.
     
  14. XJ550H

    XJ550H Well-Known Member Premium Member

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    The comment by the poster was that he capped the bleeder screw. Then hog fiddles post was about if it's been capped that it has been opened and leaking and that a cap would not solve the issue.And that if the cap was indeed leaking all the bleeding in the world could not get the air out of the system to make the brakes work properly.
    You are correct in the fact that he needs to add penetrating oil and an easy out to remove a broken bleeder screw. I will assume that he has to rebuild the caliper so at that point he could use some heat to to help it along. Also to help break up the rust he could tap on what's left of the breed bleeder screw to help break it free.
     
    Last edited: Apr 4, 2020
  15. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    Except I wasn’t ASSUMING anything. It’s what he said.

    I assume you’re assuming that I was assuming ......
     
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  16. Codysc843

    Codysc843 Member

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    Got the broke part out and it is sealed it's been re threaded halfassed and has a new bleeder screw tightened down in it but its not going to work however since the other side has a intact screw after I bleed it would it work on that one side? Or do both sides have to work to have any brakes at all?
     
  17. XJ550H

    XJ550H Well-Known Member Premium Member

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    yes i stated that incorrectly and have corrected the statement
     
  18. Timbox

    Timbox Well-Known Member

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    As I did...not trying to speak for anyone...sorry guys. Guess I might pull back a bit.
     
  19. Codysc843

    Codysc843 Member

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    Instead of arguing yall might answer the question I posted? Thanks
     
  20. Codysc843

    Codysc843 Member

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    Also what can I do about the exhaust they're way too quiet
     

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