Clutch Will NOT disengage

L.A.B. said:
The hardened clutch centre was introduced at the same time as the bronze plates according to service release N3/28.
Click to expand...
My MK2a had the bronze plates but ate its first centre within a couple of years of my ownership, replacement bought from Bob Joyners in early 80's is fine to this day. They may have introduced it on the 850's from 300000 but their quality control must have let a few soft ones through. One bought today from AN or CNW would be fine but old ones are suspect,
 
The bronze plate clutch and hardened centre were actually introduced on the 750 (in late 1972) from 212278.
 
One cause of sticking plates is gb oil seepage along the pushrod, contaminating the plates. A good degrease with oven cleaner of friction and steel plates might resolve it. Book states to grease up the rod to reduce gb oil reaching clutch. More of issue when bike kept on side stand. A better option is to fit the DynoDave pushrod seal...i think AN now offers them?
 
Hello Gentlemen- Great news: I read and digested as best I could, all the responses, and went back out the next day to look at the gearbox clutch arm and started over again. It appears that even though I have set this on two Norton's over a period of years without a hitch, for some reason I did not set the lever arm correctly AND make make sure I wasn't pushing the arm out of position from the clutch side. This time, it settled in correctly. I 'undid' it all, and reset it again, and then again one more time. I started the bike, and the clutch worked!
Thank you everyone for taking a moment to help me with this-
Lesson learned: I should have not assumed I knew what I was doing, as it's been a few years since I set the clutch rod and clutch arm, and needed to pay more attention to what I was doing.
 
Glad it worked out. It's a simple item that easily gets overlooked.
Hopefully others can learn from this.
 
RobBB said:
Hello Gentlemen- Great news: I read and digested as best I could, all the responses, and went back out the next day to look at the gearbox clutch arm and started over again. It appears that even though I have set this on two Norton's over a period of years without a hitch, for some reason I did not set the lever arm correctly AND make make sure I wasn't pushing the arm out of position from the clutch side. This time, it settled in correctly. I 'undid' it all, and reset it again, and then again one more time. I started the bike, and the clutch worked!
Thank you everyone for taking a moment to help me with this-
Lesson learned: I should have not assumed I knew what I was doing, as it's been a few years since I set the clutch rod and clutch arm, and needed to pay more attention to what I was doing.
Click to expand...
Glad you fixed it, and updated everyone. 👍
 
kommando said:
My MK2a had the bronze plates but ate its first centre within a couple of years of my ownership, replacement bought from Bob Joyners in early 80's is fine to this day. They may have introduced it on the 850's from 300000 but their quality control must have let a few soft ones through. One bought today from AN or CNW would be fine but old ones are suspect,
Click to expand...

Extreme thread drift warning, but I bought my Commando new from Bob Joyner in 1972.
 
RobBB said:
Hello Gentlemen- Great news: I read and digested as best I could, all the responses, and went back out the next day to look at the gearbox clutch arm and started over again. It appears that even though I have set this on two Norton's over a period of years without a hitch, for some reason I did not set the lever arm correctly AND make make sure I wasn't pushing the arm out of position from the clutch side. This time, it settled in correctly. I 'undid' it all, and reset it again, and then again one more time. I started the bike, and the clutch worked!
Thank you everyone for taking a moment to help me with this-
Lesson learned: I should have not assumed I knew what I was doing, as it's been a few years since I set the clutch rod and clutch arm, and needed to pay more attention to what I was doing.
Click to expand...
WooHoo! I guessed right on the second reply to your original post...see, I'm not just another pretty face, Eh?
 

Similar threads

1
1974 mk2 clutch issues
2
Replies
30
Views
1,590
MichaelB
MichaelB
Jonez69
New clutch plates or not?
Replies
9
Views
781
Jonez69
Jonez69
D
Sealed Clutch basket bearing versus unsealed
Replies
14
Views
611
Skoti
Skoti
Chris T
is a clutch problem really a gearbox problem?
Replies
11
Views
884
Chris T
Chris T
Q
Clutch Sticking upon inital gear selection
Replies
9
Views
1,713
JimNH
J
Back
Top