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AMC fork rebuild

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AMC fork rebuild

Post  Cruiser79 on Sun Oct 09, 2016 8:49 pm

Would there be a guide of any sort covering stripping and refurbing of the AMC front forks as fitted to a light cruiser, cruiser 80, falcon etc?

Mine make a prolonged spring like rattle when bounced so will need to strip them and see whats going on, while there I'll also do the seals. I'm more at home on modern japanese forks so any advice on how to tackle it would be gratefully received! I'm hoping its mostly common sense and self explanatory but would welcome words of wisdom from those who are more familiar with them

Thanks,
Rob

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Re: AMC fork rebuild

Post  Brentis1 on Mon Oct 10, 2016 1:08 am

Hi Rob,

I am not sure if this is of any assistance to you but.....

I recently did the front forks on my 1954 Model 67 Falcon. Like you - my background was more modern bikes. The front suspension in the Falcon was so simple it was almost ridiculous.

You had to remove the plate on the top of the forks (on mine the speedo is mounted on this also), remove a locating bolt on the top of each fork tube, then remove a fastening bolt that fixed straight into the top of the spring. Remove the front mudguard and drop out the front axle, and then the whole suspension and fork leg came out. The fork leg is supported inside the fork frame by a couple of bushes. It was dead simple once I got started.

The suspension was then follow your nose and literally was a progressive spring in each leg and that was it. Clean and re-lube then back together. Also checked fork legs did have lateral movement in the bushes upon reinsertion.

Hope that helps.

Cheers

Brent

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AMC forks

Post  Brian Magee on Mon Oct 10, 2016 7:21 pm

Have a look at this website. Blow by blow instructions.
Brian.
http://majcd213norton.blogspot.co.uk/2015/11/refurbishing-norton-jubilee-lightweight.html

Brian Magee

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Light Cruiser forks

Post  FB vincent on Tue Oct 11, 2016 7:08 am

Brian,

Interesting article on overhauling AMC forks, thanks for the link. From my experience of a basic AMC fork service, the most difficult part is getting the oil seals to pass over the bushes without damaging the seals.

I think I am correct in saying that the Falcon 67 has the earlier pattern of FB forks which are significantly different to the AMC/James design as fitted to the Light Cruiser and other later FB's.

Sandy

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fitting seals over bushes

Post  piston 197 on Tue Oct 11, 2016 3:49 pm

In the club spares I have several nylon taper cones which a club member made to ease the seals over the bushes, these are available to buy from myself with cheques payable to the Francis Barnett owners club 6 each inc postage
JH

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Re: AMC fork rebuild

Post  Cruiser79 on Wed Oct 12, 2016 11:47 am

Thanks for the tips guys, much appreciated! That Jubilee guide will come in very useful. John I'll see what it's like negotiating the seals over the bushes and if I reckon they'll only get shredded will be on to you for one of the cones. Good to know someone has made them available


Last edited by Cruiser79 on Wed Oct 12, 2016 11:54 am; edited 1 time in total

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Fork Seals for Cruiser / Falcon

Post  peter@dunfordconstruction on Wed Oct 12, 2016 11:49 am

Hi John,

Will the fork seals you have fit Cruiser & Falcon models? If so I need two pairs please.

Regards

Peter

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Not fork seals

Post  piston 197 on Wed Oct 12, 2016 1:58 pm

Peter , I do not have any fork seals, just a nylon cone tool to fit them over the bottom bush,
Fork seals are available from
1 AMC classic spares ( ask for ones for a G2 Matchless )
2 Villiers services
3 Bantam john

same seals on all post 1955 200,225,250cc Falcons, cruisers

JH

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Re: AMC fork rebuild

Post  peter@dunfordconstruction on Thu Oct 13, 2016 8:05 am

Hi John,

Thanks could you send me a cone? & How much shall I send?


Peter

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seal fitting cone

Post  piston 197 on Thu Oct 13, 2016 8:44 am

Peter,
I have sent you an Email with picture of this item

John H

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taper cones

Post  JIMBAR7749 on Mon Nov 07, 2016 5:21 pm

piston 197 wrote:In the club spares I have several nylon taper cones which a club member made to ease the seals over the bushes, these are available to buy from myself with cheques payable to the Francis Barnett owners club 6 each inc postage
JH


Hi John are the taper cones for assistence with fitting the oil seals still available p;ease?

Jim

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Fork cone tools

Post  piston 197 on Mon Nov 07, 2016 6:00 pm

Yes still have a couple left, will send you a p.m. 6 including post ( and most of that is the postage ! Payable to Francis Barnett Owners Club
JH

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Re: AMC fork rebuild

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