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clutch master

Discussion in '40- & 55-Series Tech' started by 72cruiser, Mar 14, 2004.

  1. 72cruiser

    72cruiser

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    does anybody (cdan, pimp, whoever) know what a clutch master cylinder is from toyota?

    mine is leakin pretty bad, so i'm gonna get a new one or rebuild it.


    anybody know of rebuild possibilities?


    thanks,
    malphrus
     
  2. notagp_afj55

    notagp_afj55

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    I just rebuilt mine and it is very simple. I got the kit
    from Knecht's auto parts for $10 and that is without a
    new piston, some have them with new pistons. if yours
    is not pitted or grooved your ok. There is only 3 parts to
    the kit. The piston o ring the outer boot and one other
    i just forgot what went brain dead.....

    The reason i did it this way was toyota wanted a fortune
    for a rebuild and no one else had a complete rebuilt one
    here in Oregon...guess we are out of the loop
    GL
    JimK
     
  3. 72cruiser

    72cruiser

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    awesome man, rebuild it is.

    thanks,


    malphrus
     
  4. Romer

    Romer fatherofdaughterofromer Moderator

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    Here is a link to CCOT's page.
     
  5. Degnol

    Degnol

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    I'd be sure to hone the cylinder, especially if it shows any sign of rust, and if it is too bad, your rebuild may not work.
    I bought mine from CCOT and after 5K miles, still happy with it.
    Ed
     
  6. 72cruiser

    72cruiser

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    yeah, i haven't looked real in depth at mine, but i'm pretty sure it's nasty.

    it's leakin fluid through the firewall. i believe it's coming in thru the boot (maybe cracked/dry, etc.).

    are there any other things that would cause this leak outside of a faulty master cylinder?


    thanks fellas,

    malphrus
     
  7. 72cruiser

    72cruiser

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    holy junk, 108 bucks for an oem from ccot. wow, now i know what you were talkin bout notagp.
     
  8. 72cruiser

    72cruiser

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  9. Cruiserdrew

    Cruiserdrew SILVER Star

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    Are you sure you want to rebuild? It's half the work to install a NEW one and you might get another 32 years out of it. Unless you are confident in your ability to judge the condition of the bore, just put in a new one, and carry the old one as a trail spare. I'll bet you are redoing that rebuild in a year or less. The boot is just there to keep dust and junk out of the bore. When the MC goes bad, its the rear internal seal that leaks and lets the fluid run in on the firewall. JMHO.
     
  10. Landpimp

    Landpimp

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    If you replace the master, it might be a good idea to replace the slave cylinder at the same time. New master can blow a old slave or vice versa.
     
  11. brian

    brian SILVER Star

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    i've rebuilt a few hilux clutch masters and never had much luck, they'd last a yr or so then leak agian. so i started using napa or advanced auto parts stuff(rebiult units) and have had good luck with those.

    the 77/40 needs a new brake master here sometime soon. i've got a price from advanced, $40 bucks for a rebuilt master. i'm going to do the clutch master as well(it's dripping down the inside fire wall), i don't have a price on that yet but i don't see it being very much.
     
  12. CruisinGA

    CruisinGA

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    1.5 years later my $74 Napa master is good.
    Didn't replace the slave. Its still fine as well. (Should have but didn't)
     
  13. 72cruiser

    72cruiser

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    yeah,

    i think i'm gonna replace em both. now i just need to figure out where to get em.

    the fact that it is a closed system, and one end is leaking means the other end should be affected by the same conditions, so it'll probably start leakin soon (or already has, more like it :D).

    any other opinions on that ccot link i posted up there?

    it seems like a good idea, but i'm unsure of the cost. it does include the MC, SC, and all the plumbing though, right?


    thanks again guys,

    malphrus
     
  14. Landpimp

    Landpimp

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    I have heard not so good things about the CCOT masters, at least the brake master. If it were me I would get an OEM master(and slave if you want)............and you wont have any worries.
     
  15. notagp_afj55

    notagp_afj55

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    don know about ccot's stuff, but they have the best price
    on these two components of any supplier i have seen plus
    you get the fluid line prebent and brand new
    my .02
    JimK
     
  16. 72cruiser

    72cruiser

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    any ideas if toyota sells the whole set up like ccot does?
     
  17. Rocky_LC

    Rocky_LC

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    I read somewhere that NAPA carries them. You should ask for the "Japanese Brand" (Aisin). Here are some Part Numbers:

    Slave: 31470-60071
    Master: 31410-60041

    Sorry, I don't know prices.

    Good Luck

    Rocky
     
  18. CruisinGA

    CruisinGA

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    Don't get anything but Napa or OEM.
    Often Napa will give you OEM, but there is no way for them to know-all the boxes and numbers are the same.
    ~$74 for master
    dunno slave.
     
  19. ChuckD

    ChuckD

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    I removed my "blown" clutch master (it quit producing pressure) and there is rust in about the first 1/2 inch of bore. Does this need to be tossed out or is that amount of rust able to be cleaned up and rebuilt with new seals? I have read about rust being the kiss of death but not certain if the entire bore needs to be rusty before the thing is considered toast.
     
  20. e rock

    e rock

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    Just the first 1/2"? Probably no big deal since that area of the bore is just there for piston support. Under normal circumstances the piston seal doesn't come out that far. I would definitely clean it up really good and hone the whole thing before making any final determinations, but if there's no rust pitting in the main bore section, it's probably useable. Be very sure to clean that rust up before inserting a new piston and seal - a little abrasion is all it takes.
     
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