Cam chain tensioner nut: which tool?

robs ss

robs ss

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What is the recommended tool for tightening/loosening the two cam chain tensioner nuts, that are so close together?
Cheers
Rob
 
Found what I think is a good solution
Use a reduced hex 5/16" nut, similar to front corner nuts on barrel (uses 1/4 BS ring spanner instead of normal nut requiring 5/16 BS)
"normal" 5/16 nuts leave almost no room for any type of spanner.
I've seen photos of allen bolts but this has the inherent problem of potentially wearing out the alloy threads in the crankcase. Better to wear out replaceable studs.
Cheers
Rob
 
I have ever tool in my workshop for anything on Nortons or any other bikes I own and a good set of tube spanners work just right for your needs, I have also machined down sockets to fit close fitting nuts etc, but the tube spanners work great, I still use the set I brought over 40 years ago.

Ashley
 
Hi Rob

Any tool supply shop should have them, a good set don't cost that much and they always come in handy for other jobs.

Ashley
 
I have found a company in England (Melco of Sheffield) who sells box spanners, very good ones by the look of it.
 
robs ss said:
What is the recommended tool for tightening/loosening the two cam chain tensioner nuts, that are so close together?
Cheers
Rob
Click to expand...
On early bikes with cycle thread the reduced nuts are .442" 1/4bs, I use 3/8 or 1/4 drive socket
OT commando is UNF stud with reduced nuts (like alternator nuts) use .4375 7/16 socket
 
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