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A65 Clutch Spring adjuster nut jammed. #711041
10/09/17 9:43 pm
10/09/17 9:43 pm
Joined: Apr 2017
Posts: 40
Sheffield UK
S
semprini Offline OP
BritBike Forum member
semprini  Offline OP
BritBike Forum member
S
Joined: Apr 2017
Posts: 40
Sheffield UK
Having difficulty engaging first gear, especially when the engine is hot so I decided to examine the clutch plates and re-adust springs if necessary, but one of the adjusters won't unscrew, just locks up against the spring. I've done a search of the forum but so far haven't found anything on this.


a
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Re: A65 Clutch Spring adjuster nut jammed. [Re: semprini] #711049
10/09/17 10:44 pm
10/09/17 10:44 pm
Joined: Aug 2001
Posts: 4,004
argyll. scotland, uk
gavin eisler Offline
BritBike Forum member
gavin eisler  Offline
BritBike Forum member
Joined: Aug 2001
Posts: 4,004
argyll. scotland, uk
The spring endcatches against the adjuster nut dimple, it can be eases over with a sharp edge, a dinner knife will do it, its supposed to do this to prevent the nuts backing out, after a turn or two it should go more easily.


71 Devimead A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: A65 Clutch Spring adjuster nut jammed. [Re: semprini] #711063
10/10/17 2:59 am
10/10/17 2:59 am
Joined: Aug 2001
Posts: 4,495
Owego, NY, USA
Mark Z Offline
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Mark Z  Offline
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Joined: Aug 2001
Posts: 4,495
Owego, NY, USA
Actually not a dimple but a tooth on the back end of the adjuster nut. Turn harder, it will come; sometimes the tooth will break off. If it does, replace the nut at your discretion. I've reused nuts with the tooth broken off, and I've never had one loosen up.

What are you using to remove the nuts? I used to use needle-nosed pliers, jaws taped around a spacer, but this was awkward, so I cut a deep notch into the end of a wide screwdriver - works much better.


Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.
Re: A65 Clutch Spring adjuster nut jammed. [Re: semprini] #711083
10/10/17 7:42 am
10/10/17 7:42 am
Joined: Apr 2017
Posts: 40
Sheffield UK
S
semprini Offline OP
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semprini  Offline OP
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S
Joined: Apr 2017
Posts: 40
Sheffield UK
Thanks, I will try your advice later today when I'm back on this job.

I made a thumb-grip device from a steel corner bracket of the right thickness and as said with a notch. I do have a large driver so I'll have a look at that to see if its suitable to modify.

Just wondering (for easier gear selection) whether I might be better putting in the correct 20w oil (or ATF) because at a pinch I put in some 10/40 car engine oil for testing the bike.

The gear-change works ok in the higher gears, just the scrunch when engaging first, and awkward selecting neutral when hot and running.


a
Re: A65 Clutch Spring adjuster nut jammed. [Re: semprini] #711145
10/10/17 9:23 pm
10/10/17 9:23 pm
Joined: Apr 2017
Posts: 40
Sheffield UK
S
semprini Offline OP
BritBike Forum member
semprini  Offline OP
BritBike Forum member
S
Joined: Apr 2017
Posts: 40
Sheffield UK
I've managed to free the nut, however no matter how much turning force I used it would not shift so I decided to drill out the dimple/tooth with an 1/8" drill. The thing was that when I was trying earlier to manipulate the nut I ended up screwing it down a thread or two so it was fractionally below the plate surface, so limiting my options.

The springs measure around 43mm so probably need replacing.


a
Re: A65 Clutch Spring adjuster nut jammed. [Re: semprini] #711159
10/10/17 10:51 pm
10/10/17 10:51 pm
Joined: Aug 2001
Posts: 4,004
argyll. scotland, uk
gavin eisler Offline
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gavin eisler  Offline
BritBike Forum member
Joined: Aug 2001
Posts: 4,004
argyll. scotland, uk
Yeah , dimple was the wrong word, bump would do.


71 Devimead A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod

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