What's wrong with this (Clutch) picture? (2012)

Stillreel · Apr 19, 2012

about to secure the clutch basket into place but the push rod does not seem to extend far enough through the mainshaft.

What's wrong with this (Clutch) picture? (2012)

Note that the clutch release arm is properly seated. The issue gets worse when I put the expensive leak seal kit on:

Should the gearbox be brought out-board more? Here is the current mount configuration:

Or perhaps the push rod is too short? Anyone got a length on this part?

Thanks

BC

Norton-Villier · Apr 19, 2012

I come up with 9 13/16

Phil

L.A.B. · Apr 19, 2012

Stillreel said:
Or perhaps the push rod is too short? Anyone got a length on this part?

9.813/9.803 in. (244.25/243.996mm) according to the factory manual.

pete.v · Apr 19, 2012

1. Make sure the lockring is all the way home number 35.

http://www.oldbritts.com/1972_g7.html

2. This spacer should be 5/8" (.625) number 34.

http://www.oldbritts.com/1972_g5.html

batrider · Apr 19, 2012

Stillreel said:
....when I put the expensive leak seal kit on:

$20 for a machined part with the seal is expensive?

Stillreel · Apr 19, 2012

Thanks all. I'll get inside the outer GB cover to ensure that the release body is properly set and check rod length.

The spacer ring old britts (34) http://www.oldbritts.com/1971_g5.html sits inside the cradle, drive side, yes?

BC

Stillreel · Apr 19, 2012

$20 for a machined part with the seal is expensive?[/quote]

When you put it like that, no. I suppose it is an intricate part.

79x100 · Apr 19, 2012

It seems too obvious but is the clutch operating ball present (and the correct size) ? Part no. 04 0031, it's shown on the inner cover diagram, along with the push-rod. It's quite a large ball and almost fills the housing.

Norton-Villier · Apr 19, 2012

That would be yes on the spacer

Phil

pete.v · Apr 19, 2012

Stillreel said:
Thanks all. I'll get inside the outer GB cover to ensure that the release body is properly set and check rod length.

The spacer ring old britts (34) http://www.oldbritts.com/1971_g5.html sits inside the cradle, drive side, yes?

BC

Yes, between the cradle and the gearbox. Yours seems about 1/8". This is critical and a common mistake. Often missed.

Pull the inspection cover on the outer cover, slacken the cable and see if you can nudge it around at all. If you can, proceed with cover removal and tighten accordingly.

L.A.B. · Apr 19, 2012

pvisseriii said:
2. This spacer should be 5/8" (.625) number 34.

pvisseriii said:
Yes, between the cradle and the gearbox. Yours seems about 1/8". This is critical and a common mistake. Often missed.

1/8" seems correct to me!

B+Bogus said:

pete.v · Apr 19, 2012

L.A.B. said:
pvisseriii said:

2. This spacer should be 5/8" (.625) number 34.

Click to expand...

pvisseriii said:

Yes, between the cradle and the gearbox. Yours seems about 1/8". This is critical and a common mistake. Often missed.

Click to expand...

1/8" seems correct to me!

[/quote]

Then what is this all about? #34 http://www.oldbritts.com/1972_g5.html

L.A.B. · Apr 19, 2012

pvisseriii said:
Then what is this all about? #34 http://www.oldbritts.com/1972_g5.html

Dunno?

There's no way I could get a 5/8" spacer in there on my Commando without the use of a crowbar.

Edit: 5/8" I/D maybe? (bolt is 9/16"??)

http://www.norvilmotorcycle.co.uk/030023.htm

79x100 · Apr 19, 2012

The top spacer (whilst essential on those boxes with a narrow top lug) can't be the cause of the problem here as it doesn't affect the relationship between pushrod and mainshaft tip.

Basically, either the pushrod's too short, the mainshaft's too long or the rod is not being pushed through far enough due to a problem with the operating mechanism - either location or missing / incorrect parts.

pete.v · Apr 19, 2012

L.A.B. said:
pvisseriii said:

Then what is this all about? #34 http://www.oldbritts.com/1972_g5.html

Click to expand...

Dunno?

There's no way I could get a 5/8" spacer in there on my Commando without the use of a crowbar.

Edit: 5/8" I/D maybe? (bolt is 9/16"??)

http://www.norvilmotorcycle.co.uk/030023.htm

Agreed, mine is 1/8 ish too. Damn, thought I had ya for a second there.

lcrken · Apr 19, 2012

Its common to have the clutch operating lever slip down in the operating lever body when you let the pressure off the pushrod. I suspect that's what's happened to you. You can check it by taking the inspection cover off and reaching in with a finger to push it back up.

Ken

CanukNortonNut · Apr 19, 2012

lcrken said:
Its common to have the clutch operating lever slip down in the operating lever body when you let the pressure off the pushrod. I suspect that's what's happened to you. You can check it by taking the inspection cover off and reaching in with a finger to push it back up.

Ken

+1 Ken
that was my first thought.
CNN

grandpaul · Apr 20, 2012

lcrken said:
Its common to have the clutch operating lever slip down in the operating lever body when you let the pressure off the pushrod. I suspect that's what's happened to you. You can check it by taking the inspection cover off and reaching in with a finger to push it back up. Ken

YAHTZEE!

Stillreel · Apr 20, 2012

Here's the update:

All of the bits are in there and assembled correctly but the push rod is 9 11/16" rather that the 9 13/16" as indicated above. A full 1/8" shorter than it should be. This must be the source of the problem.

I should mention now that I purchased this bike as a basket of bits and have only found a few incorrect parts. But the story is not over yet.

Thanks again for the assistance.

BC

Hobot · Apr 20, 2012

No guy like to find their rod too short, but an old mod to these rod to stifle oil path to clutch plates is slice rod in 2 unequal sections and put a ball bearing near the clutch end so oil drips off ball more than flows whole length of rod. Could allow a long accepted way to get clutch action back to normal

What's wrong with this (Clutch) picture? (2012)

Stillreel

Norton-Villier

L.A.B.

Moderator

pete.v

batrider

Stillreel

Stillreel

79x100

Norton-Villier

pete.v

L.A.B.

Moderator

pete.v

L.A.B.

Moderator

79x100

pete.v

lcrken

CanukNortonNut

grandpaul

Stillreel

Hobot

Similar threads