Front Sprocket & Loctite

Discussion in 'The Garage' started by TrappedAtWork, Jan 5, 2013.

  1. TrappedAtWork

    TrappedAtWork No Longer Trapped!

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    Righto, purchased my DRZ second hand about 8 months ago, 6000 km of happy riding and things have been going great.

    Time for a new chain and sprockets... the bike has about 17,000 km. So I assume that the factory chain and sprockets are on the bike.

    I have come to remove the front sprocket and found that the sprocket itself has been loctited on to the drive shaft!

    We have attempted to:

    A) remove the sprocket by hand
    B) lever the sprocket off using screw drivers
    C) spray with WD-40 and lever the sprocket off with screw drivers
    D) shock the sprocket with a hammer and socket then lever off
    E) combine loud swearing with A through D

    Is this normal for a DRZ?

    Does anyone have anymore ideas?
    Heat Pistol?
    Steering Wheel Puller?

    Any help would be greatly appreciated....

    [​IMG]
    #1
  2. Navin

    Navin Long timer

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    I'd try the heat gun next followed by a torch on the sprocket, don't let too much soak into the shaft if you can help it.
    #2
  3. katbeanz

    katbeanz earthbound misfit, I

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    I'd use a 3 jaw puller and an impact wrench, 1st gear, a leather glove and wrap some of the old chain around there to give it enough mass for the impact to work against. :1drink
    #3
  4. gsweave

    gsweave Yinz, blinkers are on, since 05

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    Heat and ya sure it isn't lefthanded threads?

    If not add more torque, my 650 took a three foot extension to break free
    #4
  5. dmn0507

    dmn0507 Been here awhile

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    Did you try to rotate the cs backwards (engine in gear, tap the sprocket teeth clockwise)? it might lock itself there if there is some wear on the splines + loctite.

    To remove the loctite I'd try to use a little propane torch and apply localized heat just near the splines, anyways i think that a gear puller would greatly help.
    #5
  6. Unstable Rider

    Unstable Rider Moto Fotografist

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    :evil Is the nut off?
    #6
  7. Hennepinboy

    Hennepinboy Have battery will travel.

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    Heat the sprocket not the shaft with a torch, tap on the edges of the sprocket with a hammer. It will break free. Be careful that you do not get it hot enough to damage the seal.
    #7
  8. dirty_sanchez

    dirty_sanchez Dirty_Sanchez

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    #8
  9. TrappedAtWork

    TrappedAtWork No Longer Trapped!

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    Thanks, but the nut is already off. I am attempting to slide the front sprocket off the main shaft. There are small splines that hold the sprocket in place.

    I did use a three foot extention to "break" the nut.
    #9
  10. TrappedAtWork

    TrappedAtWork No Longer Trapped!

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    This is my fear with heating. I do not want to damage the seal behind the sprocket.
    #10
  11. TrappedAtWork

    TrappedAtWork No Longer Trapped!

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    Thanks!

    I have found a gear puller at Supercheap. I will be down there this morning to pick one up.
    http://www.supercheapauto.com.au/on...Puller-3-Jaw-150mm.aspx?pid=12541#Description

    Since a few people have mentioned heat, I will try heat in combination with the puller.

    And thanks for the offer of a chat. I am in Brisbane Australia, and will take you up on that if things get desperate (Skype? :D).
    #11
  12. timsgs

    timsgs Adventurer

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    A small 3 jaw puller is all you need, should come right off, it's common practice to put red loctite on the sprocket itself. If not done the sprocket rocks and gets even looser on the splines , after a while it takes out the seal. the nut has nothing to do with this known problem. Go over to thumper talk for more info. Good luck
    #12
  13. whisperquiet

    whisperquiet Long timer

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  14. WayneJ

    WayneJ City Slicker

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    #14
  15. OldPete

    OldPete Be aware

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    This... it takes about 600f to break down loctite.
    If the seal lip feels hard, replace it.
    #15
  16. TrappedAtWork

    TrappedAtWork No Longer Trapped!

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    A 3 claw puller was all that was required. Right tool, right job...

    After reading the "loose sprocket" thread, I will Loctite the new sprocket.

    Thanks to all.

    :freaky
    #16