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dissasembly of rear shock covers

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G-Man
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Post by G-Man » Sun Feb 06, 2011 6:42 am

I had quite a few of these to do recently so I made up a compressor using some studding and scraps of aluminum.

Works pretty well and is easy to control.

G
Attachments
Shock Compressor 1.jpg
Shock Compressor 2.jpg
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

Dana01
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Post by Dana01 » Sun Feb 06, 2011 8:05 pm

Very cool G-man!! Gonna give it a try.
Dana

1966/7 CB-77 Red of course
1976 CB-550F (project over-budget and under-funded)
1985 GS-450S (Land Speed Racer)

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G-Man
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Post by G-Man » Mon Feb 07, 2011 1:28 am

Hi Dana

I built this with several different end fittings so that I can dismantle different types of shocks. If you are only doing Dream shocks the bottom part of the compressor can be much simpler.

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

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Jethro
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Location: Helena, Montana

Post by Jethro » Mon Feb 07, 2011 9:57 am

So to rebuild the actual shock is there only fluid and o-rings required? What type of fluid? Is it even possible to do?

Jethro

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G-Man
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Post by G-Man » Mon Feb 07, 2011 3:32 pm

Yep, it's possible to dismantle Dream shocks completely. You can extract the damper innards and replace seals and oil. The WS Manual says how much oil is required.

The rod, piston and seals are held in place by a threaded retainer ring but are quite a tight fit. I Made an extractor to perform the operation safely.

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

User avatar
G-Man
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Posts: 5678
Joined: Wed Mar 25, 2009 5:17 pm
Location: Derby, UK
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Post by G-Man » Mon Feb 07, 2011 4:18 pm

Some pictures of what you will find. These are actually CB77 but the principle is the same.



I'll post some more if you are interested.

G
Attachments
Extract Damper 2.jpg
Exract Damper 1.jpg
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

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Jethro
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Posts: 351
Joined: Fri Dec 25, 2009 1:26 am
Location: Helena, Montana

Post by Jethro » Mon Feb 07, 2011 5:52 pm

Thanks G-man. Yeah I think I would be interested in seeing more on the innards. Are the seals a specialty seal or a general item available at a bearing shop?

Thanks again, Jethro.

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