HS6 reassembly - choke/fast idle cam

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Llessur
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HS6 reassembly - choke/fast idle cam

#1 Post by Llessur » Thu Sep 13, 2018 7:08 am

Does anyone have any advice on how much to tighten the choke cam mechanism when rebuilding a set of SU HS6s (the bolt head circled in the attached picture)?

Image

When rebuilding my HS6s I have found that if I do this up to anything more than finger tight the whole cam mechanism is bound tight and won’t move - it moves nice and freely if I back the bolt off to finger-tight again but obviously that’s not ideal as it’ll work its way undone eventually.

I have a built-up pair of HS6s as reference but the bolts on these seem to be done up tight.

Am I missing something?
Adelaide, South Australia
1975 2500 - Murky silver
1977 2500S - White

My blog: https://triumph2500blog.wordpress.com/

User avatar
Llessur
Senior Member
Senior Member
Posts: 106
Joined: Fri Jul 01, 2016 5:57 am

Re: HS6 reassembly - choke/fast idle cam

#2 Post by Llessur » Thu Sep 13, 2018 12:02 pm

Problem solved - there is a spacer in the mechanism which looks like it has been deformed slightly by a previous attempt to tighten this bolt (pretty sure I didn't put enough pressure on it to do this but I guess I might have done :oops: ) I swapped out the spacer from my 'reference' carb and all is good again now :)
Adelaide, South Australia
1975 2500 - Murky silver
1977 2500S - White

My blog: https://triumph2500blog.wordpress.com/

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