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Thread: ls7 Clutch swap trouble bleeding clutch!!

  1. #31
    Bacon V's Avatar
    Bacon V is offline Cadillac Owners Fanatic
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    True, you can bench bleed on the car. Just make sure you retain the TOB with a clamp or something or you'll blow the piston out of the cylinder sleeve.

    Where specifically is your leak coming from?


  2. #32
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    I cant locate the leak per say, but it comes from inside the bell housing. Is there a way that when I have the transmission unstabbed that I can actuate the slave cylinder??

  3. #33
    Mr.electric is offline Cadillac Owners Member
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    Maybe the slave is over extending. Is the friction plate in backwards or some spacer incorrect? If the slave is leaking it may be pushing too far out.
    Also I heard about a Honda where the clutch pedal bracket was cracked. It would never make pressure because the master was not traveling enough.
    Would one of those cameras on a stick fit in the hole on the side so you could perk in there while someone press the pedal?

  4. #34
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    Not sure, but its going to a transmission shop today to get bled. They'll figure out what is wrong for sure haha.

  5. #35
    Mr.electric is offline Cadillac Owners Member
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    I bet that shop redoes the clutch job and charges you $1200

  6. #36
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    I bet not, I know what im doing just couldn't get it to bleed

  7. #37
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    Does the ls7 master have a different connector than the ls2?

  8. #38
    NC-V is offline Cadillac Owners Fanatic
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    Re: ls7 Clutch swap trouble bleeding clutch!!

    No, the connector is the same LS2/LS6/LS7/LS3

  9. #39
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    I had a bad master

  10. #40
    Mr.electric is offline Cadillac Owners Member
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    How much was the shop bill? Too bad we all missed the obvious possibility that the master was the culprit. I guess that's why shops usually replace them as a pair.

  11. #41
    WesH8398's Avatar
    WesH8398 is offline Cadillac Owners Enthusiast
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    On this topic, is the master something that should be done with a clutch swap? The LS7 swap is in my distant future, but didn't plan on replacing the master cylinder as well... Do these fail often or at any particular mileage? Are there any telltale signs of wear?

  12. #42
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    The shop charged me nothing and I do the work myself especially since I did an engine swap from 3.6 to 6.0

  13. #43
    Mr.electric is offline Cadillac Owners Member
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    Nice. Good shop to help you out.
    I have heard of masters failing after being bled, moved or transplanted to another vehicle. I think a weak seal can go when the piston suddenly travels in air not fluid during bleeding. Plus all the silt from the bottom of the reservoir get pushed through.

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