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Thread: PSA: Don't forget to change your fork oil

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    Member wheel_of_steell's Avatar
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    PSA: Don't forget to change your fork oil

    Working on a friend's triumph sprint ST 955i.
    2000ish year model, 43k on the clock, unknown service history.
    Symptoms and damage include a diving front end, cracked fairings both sides, and a pulsing front brake with lots of dead travel in the brake lever.

    So now that it's torn down... here's the unfortunate series of events:
    1. RHS fork seal wears out because nobody ever changed the fork oil in 40k/two decades
    2. fork oil pumps out all over the fork, brake caliper, and front tyre
    3. lubricated front tyre = RHS lowside? and LHS lowside?
    4. oily RHS fork and RHS brake caliper attract bulk filth
    5. RHS brake caliper, caked with filth, siezes onto rotor
    6. RHS rotor overheats and warps
    7. warped rotor pushes brake pads back into caliper with every wheel rotation
    8. mediocre feeling brakes plus all the other filth and broken components

    ...

    Change your damn fork oil folks!
    Quote Originally Posted by devolved
    I just crashed into a schoolbus full of kiddies, killed them all, raped them, set them on fire and now I'm pissing on their charred remains.

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    Member Loud's Avatar
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    Wouldn't the lesson be "a stitch in time saves nine" - replace your fork seals when they leak?

    Enjoyed the mechanical CSI story. Reminds me of a Sherlock Holmes / Spiderman movie crossover, what with all the jumping to conclusions
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    Soooo Triumph have gone back to leaking oil hey?
    Smoke me a kipper...I'll be home in time for breakfast
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    Quote Originally Posted by BusaSteve View Post
    Soooo Triumph have gone back to leaking oil hey?
    Triumphs don't leak oil, they mark their territory
    Rest in Peace

    #294


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    A note for CM's. Don't be fucking girls. You can pass anything. Just fuckin' "Nail It". Take ya panties off you faggots.

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    Member wheel_of_steell's Avatar
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    I think repairing all this damage might cost more than the cartons originally discussed

    New fork seals? $40
    New brake rotor? $please see your authorised triumph dealer
    Caliper rebuild kit? $please see your authorised triumph dealer
    New fairings? $please see your authorised triumph dealer
    Time spent cleaning up all the mess, futzing around rebuilding the brakes, driving across town to get extra parts, and complaining about it on PSB? $priceless
    Quote Originally Posted by devolved
    I just crashed into a schoolbus full of kiddies, killed them all, raped them, set them on fire and now I'm pissing on their charred remains.
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    Member GsxInShed's Avatar
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    No need to fix it..

    Just rattle can it matt black,gold out the rear sets..and away you go..

    Cop chase winner.

    oh wai ... did you say Triumph....?
    " Imagination is the seed of life..."

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    And if you're changing the fork oil, replace the seals and bushings at the same time - generally very cheap for most bikes (red ones not included).
    Home made spring compressors are easy to make and not always needed!
    Spiral out, keep going...


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    Quote Originally Posted by BusaSteve View Post
    Soooo Triumph have gone back to leaking oil hey?
    You are aware that they run kayaba, Same as 50% of the Japanese brands

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    What! Japanese forks on a Triumph.....unthinkable!!
    Smoke me a kipper...I'll be home in time for breakfast

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    So how often should fork oil be changed?
    "It moved"

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    Member Loud's Avatar
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    Quote Originally Posted by Shakey View Post
    So how often should fork oil be changed?
    Should be specified in the owners manual. I'm guessing every 4 years.
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    Member wheel_of_steell's Avatar
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    Quote Originally Posted by Shakey View Post
    So how often should fork oil be changed?
    “It depends”
    Moto guzzi v7 specifies every 10k
    I think this triumph is every 20k
    The Yamaha mt07 is every 40 or 50k?

    All of those figures are from memory. Ymmv. Race setup guys like dave moss recommend more often than that...
    Quote Originally Posted by devolved
    I just crashed into a schoolbus full of kiddies, killed them all, raped them, set them on fire and now I'm pissing on their charred remains.
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    Member Para045's Avatar
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    Quote Originally Posted by wheel_of_steell View Post
    “It depends”
    Moto guzzi v7 specifies every 10k
    I think this triumph is every 20k
    The Yamaha mt07 is every 40 or 50k?

    All of those figures are from memory. Ymmv. Race setup guys like dave moss recommend more often than that...
    The manual for my 98 BB just says "inspect" suspension every 12800km's, no mention of replacing fluid Must be good for the life of the bike
    #1 Gold Ticket Holder for the Barfridge Fan Club
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    Noted. We'll check back on that one in three years
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    Quote Originally Posted by Shakey View Post
    So how often should fork oil be changed?
    every time you pop a seal
    REPENT MOTHER FUCKER
    (anarchy in english )
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