Topic: Speedometer hub has play

[northern]

1975 550

Bike is on the road now. Sometimes the speedometer does not work.  I noticed that they speedometer hub has a bit of play between the wheel and the fork end.  Enough play that I think the speedometer hub is disengaging from the wheel.

I double checked the front axle tonight and I am at the top end of the spec, 48 lb/ft and don't want to go tighter. 

Exploded diagram in the manual does not show any spacers on the side of the wheel. 

Any suggestions? 



Sent from my iPhone using Tapatalk

[scottly]

The speedometer drive housing is the axle spacer. The drive plate has notches that need to engage with lugs in the drive before the axle is tightened. There should be no play between the drive and the wheel and fork.

[northern]

The speedometer drive housing is the axle spacer. The drive plate has notches that need to engage with lugs in the drive before the axle is tightened. There should be no play between the drive and the wheel and fork.

I agree, but now I need to figure out why there is enough play to allow the speedo hub to move side to side.......

[Bodi]

Hey - something is terribly wrong, stop riding it immediately.
Axial play in the speedo drive means axial play in the wheel hub. That is not good.
All I can think of is a missing internal hub spacer...? If you have all the external spacers what else could be missing? Reversing the nut it still tightens up, just messes with the fork clamp fitment.

[northern]

I made time today to take the front wheel off the bike.

I confirmed that the axle nut was torqued correctly 47.

I confirmed that the holders had the F going forward. I tightened the left side first and I tightened the front nuts first so the gap is at the back. 

So with the front tire off the ground I can slide the wheel side to side on the axle. Probably about 3/16" of play from far left to far right.  In the far right side the speedo is fully engaged.  But the disk brake wants to make the wheel run slightly left of the centre position( leaving more gap by the speedo housing).

Should there be that much side to side movement of the wheel? 


Sent from my iPhone using Tapatalk

[robvangulik]

There should be no side to side movement at all!

[northern]

Probably only 1/8".

Could my forks have spread?  I bought the bike last fall and did replace the fork seals and the oil.

[scottly]

1/8" is way too much! When the axle nut is tightened, the speedo drive, bearing inner races, and the other spacers are all locked to the axle. (The inner spacer in this pic isn't a stock Honda part.)

[Bodi]

I repeat: something is terribly wrong, stop riding it immediately. This is seriously dangerous!
There is no way the axle nut can be tight with axial play in any component in between the bolt head and nut. Except: if the nut is bottomed on the axle threads and something is missing in the parts stack between head and nut. Possibly reversing the axle nut could do that, I doubt it... I'm on a business trip and don't have one at hand to look at. The nut goes on with the hex close to the spacer, NOT on the outside of the fork's axle clamp.
The stack is (as I recall) bolt head, speedo drive, retained hub bearing, hub inner spacer, floating hub bearing, outer spacer (through the bearing oil seal), nut. Tightening the axle nut locks these all together very very solidly. You put the complete wheel on, align the speedo drive to suit the cable, and tighten the axle clamps. Nothing can rotate or shift axially (OK, the wheel should rotate but I think you know what I mean).

[northern]

The bike is parked....


Sent from my iPhone using Tapatalk

[northern]

I think the axle nut is on backwards and the threads have bottomed out! 




Sent from my iPhone using Tapatalk

[scottly]

The nut goes on with the hex close to the spacer, NOT on the outside of the fork's axle clamp.

[northern]

The nut goes on with the hex close to the spacer, NOT on the outside of the fork's axle clamp.

I'm at work and can't check for sure, but pretty sure the nut end is sticking out........

[Keith]

Good advice!!!!

[northern]

Thanks everyone, the axle nut was indeed on backwards.  All good now.




Sent from my iPhone using Tapatalk

[scottly]

 

[northern]

Literally laughed out loud!   


Sent from my iPhone using Tapatalk

[Stev-o]