Nice review. For the carb allen socket bolts, I've found a micro ratchet with the hex drive bit works atreat. You can actually ratchet the bolts on/off....so much easier than the allen key. For the rocker shafts, I've used a simple homemade puller made out of a metal tube wide and long enough to accept the shaft (actually a sparkplug tube wrench works well), some all thread rod, nuts and large washers. Does it nice an smooth, still heating the head with propane beforehand.
The exhaust lock ring spanner will also work on the shock absorber preload ring of the early Honda CBR600. Just needs a touch with a grinder on the "tooth" to make it fit.
Thanks for all the insight Chris! I of course have your book which I am using to slowly work my way through my '73 850 Mk1. I found it in a shed in Minnesota where it had been sitting for 30 or so years with less than 4k miles on the clock. Problem is that the shed was only weather resistant and I am dealing with a fair amount of corrosion. Like you, I've also worked on a Japanese UJM, '78 GS750E in my case. Some of the Norton design approaches and quality really make me wonder. I still love it though!
Nice review. For the carb allen socket bolts, I've found a micro ratchet with the hex drive bit works atreat. You can actually ratchet the bolts on/off....so much easier than the allen key.
For the rocker shafts, I've used a simple homemade puller made out of a metal tube wide and long enough to accept the shaft (actually a sparkplug tube wrench works well), some all thread rod, nuts and large washers. Does it nice an smooth, still heating the head with propane beforehand.
Yes, I think that if I removed the rocker shafts again I'd draw them out in the manner you describe rather than use the slide hammer. 👍
Thank you 🙏!
The exhaust lock ring spanner will also work on the shock absorber preload ring of the early Honda CBR600. Just needs a touch with a grinder on the "tooth" to make it fit.
Thanks for all the insight Chris! I of course have your book which I am using to slowly work my way through my '73 850 Mk1. I found it in a shed in Minnesota where it had been sitting for 30 or so years with less than 4k miles on the clock. Problem is that the shed was only weather resistant and I am dealing with a fair amount of corrosion. Like you, I've also worked on a Japanese UJM, '78 GS750E in my case. Some of the Norton design approaches and quality really make me wonder. I still love it though!
Thanks for your comment, and good luck with the rebuild!
@@Chris.rooke150 This is valuable information. I'll be buying your book.
The AAU (not "contact breakers") extractor bolt is 5/16" fine (UNF) not "1/2" coarse" as bolts aren't described by hexagon size.