Norton Commando
Jerrydoe.com  Forum Home  Norton Commando Forum  Photos  [FAQ]  [Search]  [Memberlist]   
 [Profile]  [Check your private messages]  [Register]  [Log in] 
Loose headlight ears

 
Post new topic   Reply to topic    Norton Commando Forum Index -> Norton Commando Motorcycles.
View previous topic :: View next topic  
Author Message
jumpjg



Joined: 15 Dec 2006
Posts: 39

PostPosted: Thu Aug 14, 2008 9:26 am    Post subject: Loose headlight ears Reply with quote

My '75 Interstate has a case of the "Rattlin' Headlight Ears". At certain RPM the right hand headlight ear will rattle at the top (just below the top triple clamp) against the fork tube. I looked at a parts book but didn't see any type of bushing to keep the ear cushioned from the fork tube. Any recommendations? Fit an O-ring between the ear & fork leg? Since the steering stem is attached to the top triple tree, this looks like it could be a challenge to access - remove front wheel, remove fork top bolts, remove stem nut, drop lower triple clamp/fork tubes away from top triple clamp. I'd appreciate any insight into a simplified process.

Thanks for the help!

Joe in St Louis
Back to top
L.A.B.
Moderator


Joined: 20 Nov 2004
Posts: 1842
Location: Norfolk, UK

PostPosted: Thu Aug 14, 2008 9:56 am    Post subject: Reply with quote

jumpjg wrote:
I looked at a parts book but didn't see any type of bushing to keep the ear cushioned from the fork tube.



Your parts list should show that each headlight ear/bracket has two 990502 O-rings (use 990522, - same O-ring as carb flanges) fitted between the bracket and lower yoke/triple clamp?

http://www.nortonmotors.de/ANIL/Norton%20Website/norton/parts-list.php?Model=n850_e&Plate=021&Part=46
-items marked "46" (x2 for each fork leg).


The easiest way to do it in my opinion, is to remove the front wheel and mudguard/fender, and then drop each fork leg out, the stem nut and yokes may need to be loosened off in order to gain enough clearance to fit everything, but I'm not 100% sure (from memory) if it is necessary to do that or not.
Back to top
jumpjg



Joined: 15 Dec 2006
Posts: 39

PostPosted: Thu Aug 14, 2008 11:21 am    Post subject: Reply with quote

Thanks for pointing out the o-rings. I didn't notice them as I was looking for something fitted at the top, where I notice the movement. Is their purpose to preload the headlight ears up onto the upper triple clamp? Or rather is one o-ring placed adjacent to the lower triple clamp and the second placed adjacent to the upper triple clamp? I'm sure this will all become obvious when disassembled, but I'm asking now to get an understanding of the assembly prior to initiating the repair.

Appreciate your help,
Back to top
Ron L



Joined: 27 Feb 2004
Posts: 1099
Location: Ohio

PostPosted: Thu Aug 14, 2008 11:26 am    Post subject: Reply with quote

Actually you need six of these o-rings. Two fit below the headlight ears and one above the headlight ears on each side. As Les says you will probably need to loosen the fork stem. There is a small recess in the lower yoke and I believe another at the top. I find it easiest to slip the tubes back in the yokes to hold the rings in place, then re-tighten the stem nut. Then pull the tubes completely up in the yokes and tighten the pinch bolts.
Back to top
jumpjg



Joined: 15 Dec 2006
Posts: 39

PostPosted: Thu Aug 14, 2008 11:53 am    Post subject: Reply with quote

Thanks for the quick response. I now know what is involved and will schedule adequate time to accomplish the task.

Appreciate the help!
Back to top
L.A.B.
Moderator


Joined: 20 Nov 2004
Posts: 1842
Location: Norfolk, UK

PostPosted: Thu Aug 14, 2008 12:06 pm    Post subject: Reply with quote

Yes, Ron L is right, you will need six O-rings.

The original parts book lists six required, but the book illustration and the Andover Norton website only shows the lower ones.
Back to top
Display posts from previous:   
Post new topic   Reply to topic    Norton Commando Forum Index -> Norton Commando Motorcycles. All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

The Unapproachable Norton Commando

At the end of 1967 the Norton Commando was announced.

The Norton Commando was greeted with a certain amount of scepticism because on first sight the commando appeared to comprise of the old Norton Dominator twin cylinder engine mounted at an inclined angle in a set of new cylinder parts.

It was not realized that the new Norton Commando Isolastic method of engine suspension damped out all engine vibration and produced a machine which had uncanny smoothness for a vertical twin. In due course the critics were silenced and the Norton Commando had the distinction of being regarded as the first of todays so called superbikes. There can be little doubt that the original design concept of the Norton Commando has proved correct, since comparatively few modifications of any real consequence have been made since production commenced during 1968.

Now nearly 40 years later Norton Commando riders like us are a breed of our own, and as far as we are concerned its still more fun to go for a blat on the old Norton Commando, and fast. As a Norton Commando owner and enthusiast, my goal here is to promote and give credit to those who keep the Norton name going.

It is more deserving to give credit to the Commando itself, for after all these years it continues to be respected. The original Commando designers like John Favill are those who deserve the credit for developing this incredible motorcycle.

The Norton Commando Roadster and Interstate of the late seventies, never died. Although the Norton Villiers factory dispersed the tradition lived on. Today Kenny Dreer in the USA is developing the new 952 CC Norton. What a great looking bike this is, and its engineering is still based on the original layout. It will be interesting to see how the new 952CC Norton does in todays tough motorcycle market. One thing is for sure, I would own one if I could afford it.