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Front fork disassembly

Husker45
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Posts: 57
Joined: Sun Nov 06, 2011 10:10 am
Location: Pittsburgh, PA

Front fork disassembly

Post by Husker45 » Sun Sep 27, 2015 11:06 am

Hello all,

Working to disassemble the front forks on a 1962 CB77. After reading numerous posts I finally built a tool to unscrew chrome fork seal, and after a week of soaking in penetrating fluid got it off. Now I can't figure out how to get fork piston off. Mine appears to be attached by 3 knock pins but don't know how to get them out. There doesn't appear to be anyway to get leverage on them from the ID of the fork pipe. Really appreciate the advice and knowledge on this forum. Any ideas appreciated.

Husker.

Tried to attach a picture from my iPad but file size is to big. Will try to reduce file size and add later.

LOUD MOUSE
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Posts: 7817
Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Re: Front fork disassembly

Post by LOUD MOUSE » Sun Sep 27, 2015 11:21 am

PM sent. ............lm
Husker45 wrote:Hello all,

Working to disassemble the front forks on a 1962 CB77. After reading numerous posts I finally built a tool to unscrew chrome fork seal, and after a week of soaking in penetrating fluid got it off. Now I can't figure out how to get fork piston off. Mine appears to be attached by 3 knock pins but don't know how to get them out. There doesn't appear to be anyway to get leverage on them from the ID of the fork pipe. Really appreciate the advice and knowledge on this forum. Any ideas appreciated.

Husker.

Tried to attach a picture from my iPad but file size is to big. Will try to reduce file size and add later.

Husker45
honda305.com Member
Posts: 57
Joined: Sun Nov 06, 2011 10:10 am
Location: Pittsburgh, PA

Front fork disassembly

Post by Husker45 » Sun Sep 27, 2015 11:21 am

Added photo of the knock pins.
Attachments
image.jpeg
image.jpeg (128.82 KiB) Viewed 5010 times

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G-Man
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Joined: Wed Mar 25, 2009 5:17 pm
Location: Derby, UK
Contact:

Post by G-Man » Sun Sep 27, 2015 11:22 am

They pins are stepped and the bush is staked over the heads once they are in. They have to be knocked out from the inside so a bar with a peg in should allow you to drive them out after clearing the material holding the head.

Image

G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

Husker45
honda305.com Member
Posts: 57
Joined: Sun Nov 06, 2011 10:10 am
Location: Pittsburgh, PA

Front fork disassembly

Post by Husker45 » Sun Sep 27, 2015 11:28 am

Thanks Loud Mouse and G-man. Another example of why I like this forum so much.

Husker

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G-Man
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Posts: 5678
Joined: Wed Mar 25, 2009 5:17 pm
Location: Derby, UK
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Re: Front fork disassembly

Post by G-Man » Sun Sep 27, 2015 1:17 pm

You're welcome. The more we share the more we all learn.

G
Husker45 wrote:Thanks Loud Mouse and G-man. Another example of why I like this forum so much.

Husker
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

Husker45
honda305.com Member
Posts: 57
Joined: Sun Nov 06, 2011 10:10 am
Location: Pittsburgh, PA

Front fork disassembly

Post by Husker45 » Sun Sep 27, 2015 6:12 pm

After finishing my chores I went back to work on the fork. I got the knock pins out and disassembled it. However I am confused. On the pipe fork there are two grooves for snap rings. On my fork there was no snap ring in the lower groove, one snap ring in the upper groove, and a snap ring just floating on the pipe fork above the upper groove (but below the fork pipe guide). In the parts manual it shows a fork pipe stopper ring, fork piston snap ring, and a fork valve stopper ring. Which is which and where do they all go.

The photos below show the parts I have and the order they were removed from bottom to top of the fork. The photo doesn't show the oil seal because I can't for the life of me get it out of fork seal housing.

As always thanks for the help.

Husker
Attachments
image.jpg
image.jpg (95.15 KiB) Viewed 4953 times
image.jpg
image.jpg (100.66 KiB) Viewed 4955 times

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