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CA77 rear shocks

modelman
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Location: Yorkshire, UK
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CA77 rear shocks

Post by modelman » Fri Oct 27, 2017 11:42 am

I will need to strip the rear 'square' shocks on my CA, I realize that it has to be compressed,
but whats the actual procedure, once compressed, whats holding it all together, is there some sort of collet, clip or screws?
What am I confronted with once compressed?
GSX1400 Red/silver
GSX1400 Blue
GS1000G
Brockhouse Corgi
CB77
CA77
T140
BSA 250

I DO have to grow old, I DO NOT have to grow up.

Geoff Hastings
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Joined: Wed Feb 22, 2017 2:59 pm
Location: Epsom, Surrey

Post by Geoff Hastings » Fri Oct 27, 2017 2:32 pm

The way I stripped my rear units was to use a couple of pieces of wood about 150mm long and strong enough to compress the rear Spring, one with a square hole cut in it the same size as the square part of the top aluminium eye. The other piece I just chiselled a notch in to help locate the bottom eye. I then used two lengths of threaded stud Long enough pass through the timber and the length of the unit, about 400mm in length each. Once the unit was compressed so that the top eye pokes through the square hole in the top piece of Timber you can then grip the chrome shaft, obviously protect it from what ever you use to grip the shaft. You should then be able to just unscrew the top eye from the shaft. There is a lock nut just below the eye so that will need to be cracked off first. Then you can just gradually back off the nuts on the threaded studs. It also helps to apply some lube to the threaded studs.

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G-Man
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Re: CA77 rear shocks

Post by G-Man » Sat Oct 28, 2017 1:56 am

Similar to Geoff I made a fixture with shaped ends. I line my top part with leather to make sure I don't scratech the cover while re-assembling.

Image

Also, when compressed, I remove the locknut by holding the top eye rather than holding the damper rod.

If you want to replace the oil and the seal it is still possible to get the seals. They are an oddball size though.

This also might help.......

http://www.honda305.com/forums/dissasem ... 94-14.html

The seals are 9 x 26.4 x 10

A close match is available here......

9 x 26.4 x 10

https://simplybearings.co.uk/shop/p1531 ... _info.html


G
modelman wrote:I will need to strip the rear 'square' shocks on my CA, I realize that it has to be compressed,
but whats the actual procedure, once compressed, whats holding it all together, is there some sort of collet, clip or screws?
What am I confronted with once compressed?
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

modelman
honda305.com Member
Posts: 222
Joined: Wed Jun 24, 2015 2:27 am
Location: Yorkshire, UK
Contact:

Post by modelman » Sat Oct 28, 2017 10:01 am

Many thanks for the replies gents, knowing that info, I used my trolley-jack & stripped them in about 20 seconds, no studding or nuts!!
GSX1400 Red/silver
GSX1400 Blue
GS1000G
Brockhouse Corgi
CB77
CA77
T140
BSA 250

I DO have to grow old, I DO NOT have to grow up.

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malcolmgb
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Posts: 401
Joined: Mon Nov 07, 2011 11:52 am
Location: Midlands UK & Cleveland OH

Post by malcolmgb » Tue Oct 31, 2017 7:07 pm

modelman wrote:Many thanks for the replies gents, knowing that info, I used my trolley-jack & stripped them in about 20 seconds, no studding or nuts!!
I am intrigued.....pictures?
1977 CB400F
1973 CL175
1976 XL175 - Sold
1964 CL72
1966 CA78

modelman
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Posts: 222
Joined: Wed Jun 24, 2015 2:27 am
Location: Yorkshire, UK
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Post by modelman » Wed Nov 01, 2017 2:36 am

I just uploaded this: https://youtu.be/ZsVYjdAszuw

It uses a 50 year old mini trolley-jack, one strap is a little longer than the other as I use this for 'exposed' springs as well, ( 1 side of a spring is higher ) hence the 'stepped' top bracket!

I had no idea as to the construction ( collerts etc. ) hence my original question.
GSX1400 Red/silver
GSX1400 Blue
GS1000G
Brockhouse Corgi
CB77
CA77
T140
BSA 250

I DO have to grow old, I DO NOT have to grow up.

Geoff Hastings
honda305.com Member
Posts: 374
Joined: Wed Feb 22, 2017 2:59 pm
Location: Epsom, Surrey

Post by Geoff Hastings » Wed Nov 01, 2017 4:30 am

Well, I'm dead impressed by that, I'd never considered using a trolley jack.

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