Author Topic: Stubborn Fork Seal  (Read 2163 times)

0 Members and 1 Guest are viewing this topic.

Offline Kenneth S (222)

  • Administrator
  • Legend
  • *****
  • Posts: 897
  • Sydney, Australia
    • View Profile
    • 24 Hour T-shirts
Stubborn Fork Seal
« on: February 07, 2012, 06:02:51 pm »
Hi Guys,

I have a stubborn fork seal which is doing it's best not to be removed. I've tried levering it out with a large regular screw driver, pulling it out with a spring puller but no go. Any more force and I am worried I might damage the alloy where it is seated. Is there a 'Trick' to this I don't know about or have forgotten?
Kenneth S
Go For It

Heaven VMX Club - Racing No 222 - 79 CR250RZ - 84 CR250RE (Steam Train) - 89 CR250RK

Race Bike History
76 RM125A, 77 RM125B, 78 RM125C, RM400C, 79 CR250RZ, 80 YZ250G, 81 RM465X, 82-83 RM490 Frank Pons Special(Beetle's 81 Race Bike)

oldfart

  • Guest
Re: Stubborn Fork Seal
« Reply #1 on: February 07, 2012, 06:35:41 pm »
Warm it up with a heat gun young  fella  ;)

Offline Davey Crocket

  • Legend
  • *****
  • Posts: 4408
    • View Profile
Re: Stubborn Fork Seal
« Reply #2 on: February 07, 2012, 07:02:54 pm »
And use a tyre lever, not a screwdriver.
QVMX.....Australia's #1 VMX club......leading the way.

Offline Freakshow

  • Superstar
  • ******
  • Posts: 7277
  • Adelaide, SA - looking for a "YZA" tank
    • View Profile
Re: Stubborn Fork Seal
« Reply #3 on: February 07, 2012, 10:42:43 pm »
Set fire to it and burn it out with a propane touch.
74 Yamaha YZ's - 75 Yamaha YZ's
74 Yamaha  flattracker's
70  Jawa 2 valve speedway's

For sale -  PRE 75 Yamaha MX stuff, frame, motors and parts also some YAM DT1,2,A and Suzi TS bikes and stuff

Offline Davey Crocket

  • Legend
  • *****
  • Posts: 4408
    • View Profile
Re: Stubborn Fork Seal
« Reply #4 on: February 07, 2012, 11:11:17 pm »
It's not a witch hunt Freaky. ;D
QVMX.....Australia's #1 VMX club......leading the way.

Offline Freakshow

  • Superstar
  • ******
  • Posts: 7277
  • Adelaide, SA - looking for a "YZA" tank
    • View Profile
Re: Stubborn Fork Seal
« Reply #5 on: February 07, 2012, 11:51:16 pm »
fork it that will sort the little prick out, id even give it a warning... come out or im burning you out !
74 Yamaha YZ's - 75 Yamaha YZ's
74 Yamaha  flattracker's
70  Jawa 2 valve speedway's

For sale -  PRE 75 Yamaha MX stuff, frame, motors and parts also some YAM DT1,2,A and Suzi TS bikes and stuff

Offline vmx42

  • Legend
  • *****
  • Posts: 1579
    • View Profile
Re: Stubborn Fork Seal
« Reply #6 on: February 08, 2012, 07:40:40 am »
...or you can reassemble the fork without the springs [and without the seal retainer/circlip]... fill completely with fluid and then put the fork in a hydraulic press and carefully compress... the seal will simply pop out.

You don't need to fill the fork in it's fully extended position. You only need an inch or two of travel. Just make sure there is no air in the fork...

or you could have the fun of burning it out... Freaky style!!!!  ;D
When a woman says "What?", it's not because she didn't hear you, she's giving you the chance to chance to change what you said.

Beam me up Scotty, no intelligent life down hereā€¦

"everyone is entitled to their own opinion, but not to their own facts"

Offline Slakewell

  • Legend
  • *****
  • Posts: 3577
  • Slakewell Motordrome
    • View Profile
Re: Stubborn Fork Seal
« Reply #7 on: February 08, 2012, 07:47:36 am »
Cut into the sides of the seal with side cutters and then lever it out trying to get it folding were you cut.
Remove all retaining circlips compress assembled forks with a tie down and put allot of compressed into the bolt hole at the bottom of the fork.
Current bikes. KTM MC 250 77 Husky CR 360 77, Husky 82 420 Auto Bitsa XR 200 project. Dont need a pickle just need to ride my motorcickle

Offline Noel

  • Legend
  • *****
  • Posts: 953
    • View Profile
Re: Stubborn Fork Seal
« Reply #8 on: February 08, 2012, 08:13:08 pm »
Get a flat punch and go around the Circumference tapping down so the seal collapses inward away from fork
then use tyre lever with protection on fulcrum

 heat is good too ;D

bigger Hammer?

Noel

Offline Kenneth S (222)

  • Administrator
  • Legend
  • *****
  • Posts: 897
  • Sydney, Australia
    • View Profile
    • 24 Hour T-shirts
Re: Stubborn Fork Seal
« Reply #9 on: February 08, 2012, 09:33:17 pm »
Thanks guys, the heat and the tyre lever did it.

Oh and thanks oldfart for calling me young fella!
Kenneth S
Go For It

Heaven VMX Club - Racing No 222 - 79 CR250RZ - 84 CR250RE (Steam Train) - 89 CR250RK

Race Bike History
76 RM125A, 77 RM125B, 78 RM125C, RM400C, 79 CR250RZ, 80 YZ250G, 81 RM465X, 82-83 RM490 Frank Pons Special(Beetle's 81 Race Bike)

Offline Tim754

  • Legend
  • *****
  • Posts: 4011
  • Northern Country Victoria
    • View Profile
Re: Stubborn Fork Seal
« Reply #10 on: February 08, 2012, 11:41:22 pm »
C4
I may not agree with what you have to say, but I'll defend to the death your right to say it.
                                                   Voltaire.

Offline Mick D

  • Legend
  • *****
  • Posts: 2915
    • View Profile
Re: Stubborn Fork Seal
« Reply #11 on: February 08, 2012, 11:49:31 pm »
I was getting kind of stuck on the idea of just torching it  ::) But I got to admit that C4 sounds pretty dam persuasive Tim  ;D
"light weight, and it works great"  :)