Front and Rear Hub Bearing Removal

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Front and Rear Hub Bearing Removal

Postby swooshdave » Mon Sep 06, 2010 9:57 pm

The manual isn't too bad with instruction but I do like more pictures.

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The victim.

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Although I started with the rear for this I'll start with the front. Remove the lockring. Mine was really tight. So I applied some heat which did the trick. I had to use a punch but it didn't take much to loosen.

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Remove the spacer and felt seal.

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The single row bearing.

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With a long punch you can pop out the bearing.

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A lovely bearing spacer. Luckily it was just yucky.

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And out comes the other bearing. The hub was still a little warm from removing the lockring. The manual says something about 100º water to warm the hub.

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The parts from the front hub.

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Remove the lockring. It's left-hand thread and clearly marked with an LH. Be careful as this is what drives the speedo, so you don't want to damage it. Mine loosened pretty easily.

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And out.

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Remove spacer and felt seal.

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Manual says to take the rear axle and the large spacer to move the bearing.

Using a hide hammer or mallet, drive on the end of the axle until a stop is felt. Driving will have moved the double row bearing further into the hub, moving the bearing spacer tube and in turn, starting to drive the lockring side bearing out of the hub tube. When the stop is felt, the double row bearing has come up against a shoulder in the hub.


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Remove the rear axle and spacer and insert the front wheel axle, threaded end first from the brake drum side. Hold square and tap gently with a hide hammer to drive on the bearing spacer and displace the speedometer drive box side bearing and spacer completely from the hub.


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Remove the front wheel axle and re-insert the rear axle and large plated spacer from the lockring end.

So I tried this but I don't know what I did wrong because the axle went all the way in.

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So I grabbed my bearing drift and drove the bearing out.

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The rear hub parts.

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All the parts nicely organized so hopefully I won't for forget what is what.


I need remove the tires, rims and spokes then clean and polish the hubs before putting all the parts back in so stay tuned.
You probably want to go into town, and find a up to date Jap Bike store,
With a full spares department, a clean workshop, and kean young mechanics.
And ask them if theres a Grumpy Old Bloke out in the Hills, who knows how to fix Real Motorcycles.

Matt
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Re: Front and Rear Hub Bearing Removal

Postby grandpaul » Tue Sep 07, 2010 7:53 am

At some point back in time, I took photos of each individual part with an orientation arrow and I.D.'ed them with part number & description.

What a circus with WAY more than 3 rings. Get ONE seemingly insignificant bit wrong, and you have it to do all over again.
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Re: Front and Rear Hub Bearing Removal

Postby DogT » Tue Sep 07, 2010 11:07 am

Make sure you remember which way that rear bearing spacer went, it is counter intuitive. If you don't put it in right everything will bind. You realize you can get the sealed double row bearings from Walridge so you don't have to machine the hubs?

Dave
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Re: Front and Rear Hub Bearing Removal

Postby swooshdave » Tue Sep 07, 2010 12:19 pm

DogT wrote:Make sure you remember which way that rear bearing spacer went, it is counter intuitive. If you don't put it in right everything will bind. You realize you can get the sealed double row bearings from Walridge so you don't have to machine the hubs?

Dave
69S


I already have a few, if not all the replacement bearings. I need to double check the inventory. I didn't purchase them, they were in the "pile".
You probably want to go into town, and find a up to date Jap Bike store,
With a full spares department, a clean workshop, and kean young mechanics.
And ask them if theres a Grumpy Old Bloke out in the Hills, who knows how to fix Real Motorcycles.

Matt
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Re: Front and Rear Hub Bearing Removal

Postby swooshdave » Sat Sep 11, 2010 1:32 pm

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I was trying to figure out what I did with my tire irons, then I remember what grandpaul said about bolt cutters. Not like I care about the rim or tire or spokes. About 5 minutes later...

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Image
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Image

Now to clean and polish and then put the bearings back in.
You probably want to go into town, and find a up to date Jap Bike store,
With a full spares department, a clean workshop, and kean young mechanics.
And ask them if theres a Grumpy Old Bloke out in the Hills, who knows how to fix Real Motorcycles.

Matt
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Re: Front and Rear Hub Bearing Removal

Postby KEV-C » Sat Sep 11, 2010 1:41 pm

Hi Dave.

Hope you measured the rim offsets? :D
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Re: Front and Rear Hub Bearing Removal

Postby swooshdave » Sat Sep 11, 2010 4:54 pm

KEV-C wrote:Hi Dave.

Hope you measured the rim offsets? :D


Nope. All I have to measure is the box that will ship them to Buchanans. :mrgreen:
You probably want to go into town, and find a up to date Jap Bike store,
With a full spares department, a clean workshop, and kean young mechanics.
And ask them if theres a Grumpy Old Bloke out in the Hills, who knows how to fix Real Motorcycles.

Matt
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Re: Front and Rear Hub Bearing Removal

Postby swooshdave » Fri Mar 04, 2011 3:47 pm

swooshdave wrote:
KEV-C wrote:Hi Dave.

Hope you measured the rim offsets? :D


Nope. All I have to measure is the box that will ship them to Buchanans. :mrgreen:


If you've been reading elsewhere it looks like I probably should have measured...
You probably want to go into town, and find a up to date Jap Bike store,
With a full spares department, a clean workshop, and kean young mechanics.
And ask them if theres a Grumpy Old Bloke out in the Hills, who knows how to fix Real Motorcycles.

Matt
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Re: Front and Rear Hub Bearing Removal

Postby swooshdave » Fri Mar 04, 2011 3:59 pm

Front wheel bearing installation. Should be easy...

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Not to many parts, right?

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Test. Pre-grease.

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Driving it in. I've lightly heated the hub, perhaps 100º, just like when I took it out.

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Bearing seated.

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Spacer, felt seal and lockring.

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Spacer

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Felt Seal

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Lockring. The hub was still slightly warm so hopefully this won't need any locktite.

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Other side

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Manual says to pack the area around the spacer. It's not jam-packed but there's some grease in there.

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Manual says to use the front axle and drive it home. By using the axle it should insure that it goes in square as it's passing through the opposite bearing.

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Bearing seated.

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I think this is right. Flat thin washer, felt seal and then the domed washer (dome to the outside). This is what it looked like when I took it apart. There is a space between the bearing and the flat washer. I might pack some grease in there.

Is this right?

Also the manual says to lightly pin the domed washer in the hub (and that later ones were a press fit).
You probably want to go into town, and find a up to date Jap Bike store,
With a full spares department, a clean workshop, and kean young mechanics.
And ask them if theres a Grumpy Old Bloke out in the Hills, who knows how to fix Real Motorcycles.

Matt
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Re: Front and Rear Hub Bearing Removal

Postby Jeandr » Fri Mar 04, 2011 4:37 pm

swooshdave wrote:Manual says to use the front axle and drive it home. By using the axle it should insure that it goes in square as it's passing through the opposite bearing.


The manual may be wrong there, when you pound in the bearing through the center, you are putting stresss 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
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Re: Front and Rear Hub Bearing Removal

Postby swooshdave » Fri Mar 04, 2011 5:29 pm

Jeandr wrote:
swooshdave wrote:Manual says to use the front axle and drive it home. By using the axle it should insure that it goes in square as it's passing through the opposite bearing.


The manual may be wrong there, when you pound in the bearing through the center, you are putting stresss 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


Yeah, but the manual said to do it that way! :mrgreen:

Next time I'll use a socket.
You probably want to go into town, and find a up to date Jap Bike store,
With a full spares department, a clean workshop, and kean young mechanics.
And ask them if theres a Grumpy Old Bloke out in the Hills, who knows how to fix Real Motorcycles.

Matt
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Re: Front and Rear Hub Bearing Removal

Postby swooshdave » Fri Mar 04, 2011 5:42 pm

On to the rear:

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First bearing, driven with the appropriate sized socket! I did lightly heat the hub like I did on the front.

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Spacer and felt seal

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Tighten down the Left Hand retainer. I gave it a couple light taps with a punch, you don't want to ruin the tangs as they drive the speedo.

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Bearing spacer, long shoulder in first, lightly greased. Manual said nothing about packing the rear hub with grease. I put enough on to keep it from rusting.

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Drive side bearing

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Flat washer

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Felt seal and domed washer

All done. A lot easier than I thought it would be.
You probably want to go into town, and find a up to date Jap Bike store,
With a full spares department, a clean workshop, and kean young mechanics.
And ask them if theres a Grumpy Old Bloke out in the Hills, who knows how to fix Real Motorcycles.

Matt
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Posts: 6401
Joined: Wed Apr 15, 2009 10:53 pm
Location: Portland, Oregon

Re: Front and Rear Hub Bearing Removal

Postby pelican » Fri Mar 04, 2011 6:04 pm

This is a nice thread
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