Problem with front wheel hub

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Eric2205
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Problem with front wheel hub

Post by Eric2205 » Mon Apr 15, 2019 2:40 pm

Hello,

A month ago by changing my rolling kit I realized my front wheel hub too old.
I bought one to replace it with a new bearing kit.
Saturday I can install the inner bearing but I could not install the outer bearing : the outer ring was too big (45.30) for my new front wheel hub (41.30).
I think the front wheel hub that I bought was installed in a Scimitar younger than mine.

If I buy the bearing kit for a Scimitar 68-71 I will be able to install this front wheel hub or will I have to find a new front wheel hub?

Eric



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Problem with front wheel hub

Post by peter freeman » Mon Apr 15, 2019 4:02 pm

The older cars had the smaller outer bearing - you have acquired a hub from a older car not a younger one. Best you contact the club traders and ask for the older bearing - you are right it being 68 to 71 or thereabouts. They were changed because flexing caused the brake pistons to travel too far in when cornering and the peddle travel to be longer after the corner. The stub axles were changed ( by thicker ones ) and with them the outer wheel bearings.



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David Tew
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Problem with front wheel hub

Post by David Tew » Mon Apr 15, 2019 5:17 pm

I get my bearings from a local specialist bearing suppler as I prefer Timkin or SKF to Chinese ones! NTN or NSK are good as well. :wink:

The reference numbers for the older hub bearings are:
Outer - 03062/03162
Inner - 07100S/07210X


- My wife says I don't listen to her ...... or something like that! -
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Problem with front wheel hub

Post by Eric2205 » Mon Apr 15, 2019 6:44 pm

peter freeman wrote:
Mon Apr 15, 2019 4:02 pm
The older cars had the smaller outer bearing - you have acquired a hub from a older car not a younger one. Best you contact the club traders and ask for the older bearing - you are right it being 68 to 71 or thereabouts. They were changed because flexing caused the brake pistons to travel too far in when cornering and the peddle travel to be longer after the corner. The stub axles were changed ( by thicker ones ) and with them the outer wheel bearings.
Well on a scimitar older than mine.
But I may be having a problem: I just bought the front wheel hub, I have on the car the stub axles models after 72



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Problem with front wheel hub

Post by Eric2205 » Mon Apr 15, 2019 6:44 pm

David Tew wrote:
Mon Apr 15, 2019 5:17 pm
I get my bearings from a local specialist bearing suppler as I prefer Timkin or SKF to Chinese ones! NTN or NSK are good as well. :wink:

The reference numbers for the older hub bearings are:
Outer - 03062/03162
Inner - 07100S/07210X
Thank a lot for the parts numbers



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Problem with front wheel hub

Post by Eric2205 » Wed Apr 17, 2019 1:02 pm

Hello,

I find a front wheel hub for my Scimitar GTE 18/10/1972 number 931060
It's the front wheel hub with "big" outer bearing : 45.3 for the outside ring



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Problem with front wheel hub

Post by Eric2205 » Thu Apr 18, 2019 9:22 am

Hi,

I found it !!



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Problem with front wheel hub

Post by Eric2205 » Tue May 14, 2019 1:40 pm

Hello,

Tonight I'll rebuild my suspension and my front wheel hub with new
- lower trunnion bolt kit
- trunnion housing seals
- front top bal joint
- wheel hub bearing
- brake disc

I will need some tips to put all this together
How should the bolt of the trunnion be tightened?
How should be positioned the oil seal near the inner bearing?

Image

OR
Image


To fit the wheel hub and to avoid over-tightening the bearings my method is as follows: tighten until the hub is no longer turning and unscrew in order to insert the split pin. Is this the right way to go?



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Problem with front wheel hub

Post by David Tew » Tue May 14, 2019 2:05 pm

Eric2205 wrote:
Tue May 14, 2019 1:40 pm
How should the bolt of the trunnion be tightened?
How should be positioned the oil seal near the inner bearing?
The trunnion bolt should be torqued to 50-65 ft/lb. It should be tight but make sure the bolt doesn't turn in the trunnion itself. I've occasionally had to thin the top-hat bush slightly to ensure this.
The felt oil seal should drift in squarely against the rear wheel bearing, felt outwards.
Eric2205 wrote:
Tue May 14, 2019 1:40 pm
To fit the wheel hub and to avoid over-tightening the bearings my method is as follows: tighten until the hub is no longer turning and unscrew in order to insert the split pin. Is this the right way to go?
NO! Tighten the hub nut until the hub just starts to bind and then back it off 1/2 a flat. You need some end float otherwise the bearing will seize.

You'll develop a feel for the correct setting. :wink:


- My wife says I don't listen to her ...... or something like that! -
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Problem with front wheel hub

Post by Eric2205 » Tue May 14, 2019 2:31 pm

Hi,

Thank you for the informations
have a torque wrench, thanks for setting value

So I have to position the felt oil seal as in the picture 1

For the front wheel hub, if I understood correctly I tightened by avoiding that the hub is blocked



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Problem with front wheel hub

Post by Roger Pennington » Tue May 14, 2019 2:31 pm

On the subject of trunnion bolt torque, there's a whole thread on the subject in the "How to Guides" section here. David is correct as to the required torque figure.


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Problem with front wheel hub

Post by Eric2205 » Tue May 14, 2019 2:59 pm

Thank you for the : a very good reading



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Problem with front wheel hub

Post by David Tew » Tue May 14, 2019 3:38 pm

Eric2205 wrote:
Tue May 14, 2019 2:31 pm
So I have to position the felt oil seal as in the picture 1
Yes. You need to ensure it is well lubricated before you fit the hub. I soak them in oil (don't overdo it though!) and coat the surface with lithium grease.


- My wife says I don't listen to her ...... or something like that! -
SE4B Coupe - rebuilt on brand-new chassis.
Bought in 1978 and an RSSOC member since. 😲

Eric2205
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Problem with front wheel hub

Post by Eric2205 » Tue May 14, 2019 4:04 pm

David Tew wrote:
Tue May 14, 2019 3:38 pm
Eric2205 wrote:
Tue May 14, 2019 2:31 pm
So I have to position the felt oil seal as in the picture 1
Yes. You need to ensure it is well lubricated before you fit the hub. I soak them in oil (don't overdo it though!) and coat the surface with lithium grease.
OK : oil and grease !



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Problem with front wheel hub

Post by Eric2205 » Wed May 15, 2019 8:06 am

Hi,

I did the work yesterday !!
Not easy to fit the bolt kit bush !!

Image

Image



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