650 Forks, How do I....

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fossie
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Re: 650 Forks, How do I....

Post by fossie » Sun Feb 24, 2013 9:06 pm

Now there is a way , You won't find mentioned in any manual. :shock:
Any trained mechanics look away NOW! ;)

Get an old screw driver grind the side of the tip so it's sharp, then cut a bit the side of the tip so it is a hook. :?
Then wrap a rag around the fork station after draining all the oil out and removing springs , so the part of the stantion in use for suspension is in the fork leg.
Remove the circlip washer front above seal that holds it in .

Now hammer the tool you just made in to the seal, and lever back, repeat the process on the opposite side. Heypresto seal out.
Make sure you flush the forks out with kero or such like , but do that anyway no matter how you change the seals.

To fit new seal lightly oil stantion slide seal down as far as you can, place old seal over it , and tap with a piece of wood until new seal is seated.

Total time 20 mins for both seals. :twisted: :roll:
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G0FHM

Re: 650 Forks, How do I....

Post by G0FHM » Sun Feb 24, 2013 9:11 pm

Now, THAT is my style of mechanicking :-)

Good job I bought that grinder the other day... I've only used it to grind 3 bolt heads off so far!

Will modificate a screwdriver tomorrow ;-)

Pop-Kat

Re: 650 Forks, How do I....

Post by Pop-Kat » Sun Feb 24, 2013 10:16 pm

As you've said the forks were full of an oil/water mix don't you think it would be best to strip them properly then check and clean the internals.

G0FHM

Re: 650 Forks, How do I....

Post by G0FHM » Mon Feb 25, 2013 12:16 am

I know Mal....

I have toyed with the idea..... but think I ought to do it properly!

I'll crack the top open tomorrow and have a look at the length of tool I need... If a job's worth doing and all that!

J

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Re: 650 Forks, How do I....

Post by KeKat » Mon Feb 25, 2013 9:07 pm

I use a long length of square steel rod. Grind the end to a square pyramid (this will stop the piston from turning)

place the rod in the vise, then insert the fork leg on the rod and use a impact driver on the bottom bolt holding the piston.

I must have done about 10 sets of forks this way, never had a problem.
Keith KOC 355

1982 Suzuki GSX1000SZ
1991 Ducati 900SS
1996 Kawasaki ZZR600
2003 Transalp
2004 MV Agusta brutale F4
2003 Cagiva xtra raptor 1000
2012 Triumph Tiger 800
2019 Suzuki GSX-S 1000S

1966 Triumph T100C (Fixing push rod seals again)
1960 Bianchi Gardena 75 (Restoration Project when i get time)
1961 Triumph T100A (Cafe Racer Project)

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Re: 650 Forks, How do I....

Post by katscott » Mon Feb 25, 2013 9:49 pm

I used a piece of 2x1 batten cut down to fit inside the fork leg to hold the piston still. I do usually try to crack the allen bolt off whilst the legs are still in the yolks, seems to be easier. Last strip down I had to use my specialist batten tool.

G0FHM

Re: 650 Forks, How do I....

Post by G0FHM » Mon Feb 25, 2013 10:05 pm

I'm totally lost here guys!

Never done forks before!

I've removed the top hex nut - and had a face full of spring :-)

Looks like I can see a capscrew down the bottom. I take it something else needs to be wedged down the bottom to stop the whole lot turning?.

Looking at the exploded diagram of the forks, it's just confusing! (give me a circuit diagram, or a wiring diagram i'm fine!).

Looks like i'm gonna be subbing this one out!

J

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Re: 650 Forks, How do I....

Post by katscott » Mon Feb 25, 2013 11:54 pm

If you turn fork leg upside down you will see an allen head bolt in a recess. you need to undo this to strip forks.

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Re: 650 Forks, How do I....

Post by KeKat » Tue Feb 26, 2013 4:50 pm

Here it is
Attachments
Forks.JPG
Keith KOC 355

1982 Suzuki GSX1000SZ
1991 Ducati 900SS
1996 Kawasaki ZZR600
2003 Transalp
2004 MV Agusta brutale F4
2003 Cagiva xtra raptor 1000
2012 Triumph Tiger 800
2019 Suzuki GSX-S 1000S

1966 Triumph T100C (Fixing push rod seals again)
1960 Bianchi Gardena 75 (Restoration Project when i get time)
1961 Triumph T100A (Cafe Racer Project)

G0FHM

Re: 650 Forks, How do I....

Post by G0FHM » Tue Feb 26, 2013 5:00 pm

Lovely, super, smashing, great! Now I know what to look for, i'll have a pop at it.

Scott's 2x1 tool sounds like a good idea! Will report back tomorrow - it's grandfathers 90th today, so otherwise engaged!

Thanks,

J

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