71 rear brake assm video???

Whiterabbit · Mar 10, 2023

Is there a video out there showing the rebulding of the rear drum assm on 71 up?? As we know the maint manual leaves alot to be desired as far as the vodoo going on in the left side of the rear wheel. Is the backing plate supposed to be a lil loose/jiggly when the wheel is removed. The L/side dummy axle nut is tight. I'm just going over the bike to make sure it's ready for riding season while waiting for pistons to arrive. Thanks all.

BERT · Mar 10, 2023

Whiterabbit said:
Is there a video out there showing the rebulding of the rear drum assm on 71 up?? As we know the maint manual leaves alot to be desired as far as the vodoo going on in the left side of the rear wheel. Is the backing plate supposed to be a lil loose/jiggly when the wheel is removed. The L/side dummy axle nut is tight. I'm just going over the bike to make sure it's ready for riding season while waiting for pistons to arrive. Thanks all.

You may find this drawing helpful. Try this search:
The thread is titled "Front and Rear Hub Bearing Removal(2010)"
and post# 25. Sorry, I don't know how to attach directly.

L.A.B. · Mar 10, 2023

Whiterabbit said:
Is the backing plate supposed to be a lil loose/jiggly when the wheel is removed.

No.

Whiterabbit said:
The L/side dummy axle nut is tight.

Then something appears to be wrong.
Possibly an incorrect thin washer under the nut as the nut can then run out of thread before the assembly is tight.

BERT said:
You may find this drawing helpful. Try this search:
The thread is titled "Front and Rear Hub Bearing Removal(2010)"
and post# 25. Sorry, I don't know how to attach directly.

Front and Rear Hub Bearing Removal (2010)

The manual may be wrong there, when you pound in the bearing through the center, you are putting stress on the balls and the races, that type of bearing is not designed to take that stress. You should use a socket (or something) that pushes on the outside of the bearing (in this case). Jean...

www.accessnorton.com

L.A.B. · Mar 10, 2023

If, however, by "backing plate" you actually meant the brake drum, not the brake plate...

Andover Norton - REAR BRAKE PLATE EARLY COMMANDO - 06.0332

REAR BRAKE PLATE EARLY COMMANDO

andover-norton.co.uk

...then it's possible for that to be "a little loose" with the wheel removed.

Whiterabbit · Mar 11, 2023

Nope, the backing plate does wobble a bit even when the stub axle nut is snugged up. For the life of me I cant figure out how the d**n drum comes off the brake backing plate to check if I assembled the stub axle correctly or left a shim/washer on the workbench. Sad, because I rebuilt this about 4yrs ago and can't remember how. (it sucks to slowly lose your mind...)

L.A.B. · Mar 11, 2023

Whiterabbit said:
For the life of me I cant figure out how the d**n drum comes off the brake backing plate to check if I assembled the stub axle correctly or left a shim/washer on the workbench.

You need to remove the complete assembly from the swingarm then remove the brake plate from the drum.

Whiterabbit · Mar 11, 2023

I had it laying on the bench. How does the two separate?

L.A.B. · Mar 11, 2023

Whiterabbit said:
I had it laying on the bench. How does the two separate?

After removing the spacer the brake plate complete with the brake shoes should separate from the drum unless the brake shoes are grabbing the drum.

Whiterabbit · Mar 11, 2023

Got it off. lol! I remember putting a new lever return spring on it when I last messed with it, that sucker had it in a bit of a bind and I'm always leery for prizing or beating on assemblies to take them apart but a light smack with the rawhide mallet popped it apart. I'm missing the washer between the dummy axle and the inside of the brake back plate, itm# 21. Anyone know the thickness of that washer/spacer so I can fire up the lathe and make another??
Thanks soooooo much for your patience and insight.

L.A.B. · Mar 12, 2023

Whiterabbit said:
I'm missing the washer between the dummy axle and the inside of the brake back plate, itm# 21. Anyone know the thickness of that washer/spacer so I can fire up the lathe and make another??

Washer #21 is "AR" = As Required (prevents the plate or sides of the shoes from rubbing against the drum?). If it didn't have one then it probably doesn't need one. The lack of washer #21, therefore, should not be the cause of the brake backplate being loose.

Edit: Although thinking about it some more, the additional thickness of the washer (really a shim) might also assist in clamping a loose back plate.

REAR WHEEL DUMMY SPINDLE PEN STEEL WASHER

NME5276 RGM NORTON 067603 REAR WHEEL SPINDLE WASHER

www.rgmnorton.co.uk

"OUTSIDE DIAMETER: 1.256 1 1/4" (32MM)
INSIDE DIAMETER: .858 (21.8MM)
THICKNESS: .025" (.6MM)"

Whiterabbit · Mar 12, 2023

Found the culprit, all good now.... big burr on outter washer preventing tightening all the way up. Fab'd up new outter washers and everything snugged up properly. Now on to that dead horn since the rear wheel is off! LOL

Thanks all!

71 rear brake assm video???

Whiterabbit

BERT

L.A.B.

Moderator

Front and Rear Hub Bearing Removal (2010)

L.A.B.

Moderator

Andover Norton - REAR BRAKE PLATE EARLY COMMANDO - 06.0332

Whiterabbit

L.A.B.

Moderator

Whiterabbit

L.A.B.

Moderator

Whiterabbit

L.A.B.

Moderator

REAR WHEEL DUMMY SPINDLE PEN STEEL WASHER

Whiterabbit

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