Final Drive Assembly

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bbelk
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Joined: Wed Aug 04, 2010 2:13 pm

Final Drive Assembly

Post by bbelk »

This sweet looking part came in the mail today with shiny new drive splines.

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The caged ball bearings slid reasonably easily onto the gear.

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However, I have been unable to get the outer ring of the bearing to slip into the case.

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The Gear and bearing are currently sitting in the freezer. I am afraid to apply much heat to the outer shell as there is a rubber seal right there.

Any suggestions will be appreciated. I will now go look at Duane's site.

Brad
1975 R90/6
1979 R65
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dougie
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Location: Burlington Ontario, Canada

Re: Final Drive Assembly

Post by dougie »

Perhaps don't apply heat with a torch. Instead, put it in a reasonably warm oven (225-250F ?) for a long time (2+ hours?) so the heat permeates the whole thing. 225 -250F is not that much higher than boiling water so one would hope that the rubber can handle it.
Then be all setup to do it, and be quick (but you know that).
I've spent most of my money on women, motorcycles, and beer.
The rest of it I just wasted.
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bbelk
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Re: Final Drive Assembly

Post by bbelk »

I used a heat gun and a very small amount of violence and it seemed to go together. Now to get those brake shoes back on.
1975 R90/6
1979 R65
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dougie
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Re: Final Drive Assembly

Post by dougie »

bbelk wrote:I used a heat gun and a very small amount of violence and it seemed to go together. Now to get those brake shoes back on.
EXCELLENT!
I've spent most of my money on women, motorcycles, and beer.
The rest of it I just wasted.
Duane Ausherman
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Re: Final Drive Assembly

Post by Duane Ausherman »

The brake shoes go on in seconds, as they just flip over and into place with the springs already mounted. Seat the bottom one in place and then use a lever to flip the upper shoe into place. Be sure to gently tap the almost round and thin washer back to flat again.

Never try to stretch the springs out and then into place as with a car. It is 100 times simplier and safer on your bike.

I am very glad to hear that this project is moving along as planned. Once again, thanks to both of you for taking care of me during my time of need.
Ask the Indians what happens when you don't control immigration.
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bbelk
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Re: Final Drive Assembly

Post by bbelk »

Duane Ausherman wrote:I am very glad to hear that this project is moving along as planned. Once again, thanks to both of you for taking care of me during my time of need.
I should mention at this point (since the parts did go back together) that this project was spear headed and funded by Duane after seeing my poor drive splines this winter. Duane put me onto Randy Long at:

Randy Long
Long’s Mechanical Services
74 Risbon Road
Honey Brook PA 19344

Who did the work for significantly less money than the first bid we got. It looks like very nice work and it was delivered back sooner than promised.

Thank You Duane

The bike should be running tomorrow.

Brad
1975 R90/6
1979 R65
KellyVB 75R90S
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Re: Final Drive Assembly

Post by KellyVB 75R90S »

Hey Brad,
Sounds like the bike is ready for a run, I'll come by on June 11 and you can ride with me to NC to take on the Tail of the Dragon... LOL. OH, BTW, did you check the big nut that is on the spline shaft? It should be torqued at 120Lbs. Mine fell off when I took the FD off.

Kelly
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bbelk
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Re: Final Drive Assembly

Post by bbelk »

Duane Ausherman wrote:The brake shoes go on in seconds


They do if you put the round end on the round pole and the odd shaped end over the cam. Doing it backwards takes much longer and is a bitch of a knuckle buster.
KellyVB 75R90S wrote:Hey Brad,
Sounds like the bike is ready for a run, I'll come by on June 11 and you can ride with me to NC to take on the Tail of the Dragon... LOL. OH, BTW, did you check the big nut that is on the spline shaft? It should be torqued at 120Lbs. Mine fell off when I took the FD off.
Kelly
By June I will be between 5 and 10 thousand feet somewhere in the mountains west of here where it is cooler. Its a good offer though. My son and I did the Tail of the Dragon in 2008 on the way to Ken's house.

Image

I did the work without removing the rear drive from the drive shaft so I never got down to the nut you are talking about.
1975 R90/6
1979 R65
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bbelk
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Re: Final Drive Assembly (Before and After)

Post by bbelk »

Before:

Image

Image

After:

Image
1975 R90/6
1979 R65
Duane Ausherman
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Joined: Thu Aug 12, 2010 12:39 pm
Location: Galt California
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Re: Final Drive Assembly

Post by Duane Ausherman »

Brad, glad to hear of your progress. Enjoy your great ride that is coming up.

The minor help that I performed was just a token for my appreciation of how well you took care of a very sick person, me.

That urgent care center hasn't been fully paid yet. I called and asked to be billed, but have heard nothing yet and that was from 2 months ago. I will find a way to pay them somehow.

My student and host here in the Czech Republic has his girl friend visiting also. She arrived with something fierce in her lungs, at least bronchitis or worse. Then she came down with a UTI and was really sick. I always carry antibiotics for my all too frequent prostate infections. I have endured 75 to 100 during my life.

She wanted to treat it with natural methods, but that wasn't working. Finally, I got her to take my pills and she began recovering quickly. I well remember how awful it is to get sick while traveling and will do whatever it takes to help her. She is a sweet heart, as I have come to learn. I hadn't met her before this trip.

Her boyfriend's network got me my lost meds replaced in only 20 hours just last week. He hasn't used his network for her just yet. He has no knowledge of medicine and fails to appreciate just how quickly one can fail under some of these conditions. He is young and strong, has been lucky to not get sick and thinks that it should be the same for others too.
Ask the Indians what happens when you don't control immigration.
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