FRONT HUB FELT SEALS

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Dennis Nicholas
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FRONT HUB FELT SEALS

Post by Dennis Nicholas » Thu Jun 13, 2019 12:11 pm

BEWARE different felt seals and housings for front hubs if you are about to order. 6375/6376 will not fit 6a, b, SE8.
Just received felt/cups seals for my GTC from Graham Walkers.....I did specify for GTC. Wrong type sent....they are much too thick and inner diameter too small to fit over shoulder of vertical link. Invoice shows part number 6375 which is the cup that fits in the hub...its associated felt is 6376. GW parts catalogue shows these parts as "all models". WRONG. Think they are only for 5/5a?? The later vertical link had a "cup inner bearing", item 13 in drawing but not listed,(think should have been called "spacer") which fits over shoulder on vertical link giving larger diameter for felt seal to fit over.....later vertical links have shoulder machined on which is larger diameter same as cup inner bearing so does not need the "cup inner bearing" (spacer) and the later felt fits direct over this.

Called GW and explained and parts man was not aware of all this (we have sold X hundred of 6375/6376....etc.). I suggested they need to alter the parts list he is working from. He suggested I return items and they would see what they can do. Must admit I am surprised they have not got an up to date list after all this time. Perhaps they will now have found another bin with the right bits and will amend their parts list.

Dennis


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FRONT HUB FELT SEALS

Post by scimjim » Thu Jun 13, 2019 2:09 pm

I think the change was during 6a production, not 5a/6 difference.


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FRONT HUB FELT SEALS

Post by halfpenny » Thu Jun 13, 2019 4:23 pm

5a small diameter stubs certainly take a smaller felt seal than the larger stubs ( because the vertical links have a different diameter shoulder)



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FRONT HUB FELT SEALS

Post by halfpenny » Fri Jun 14, 2019 9:12 am

My record shows 5a grease seals have an o/d of 2.1". Small i/d (= vertical link boss o/d) was 1.375 "; large i/d was 1.5". I guess a spacer could be fitted to grow the smaller boss, but mine had a smaller i/d felt seal (ie no spacer), so two sizes were clearly available.



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FRONT HUB FELT SEALS

Post by Roger Pennington » Fri Jun 14, 2019 11:03 am

Are we actually talking about the same changes here? AFAIK within Se5/5a production there was a change to stub axle diameter (not sure over how much of the length it applied?). Then during Se6-on production there was a change to the profile of the upright/vertical link, on the surface adjacent to the stub axle?


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FRONT HUB FELT SEALS

Post by philhoward » Fri Jun 14, 2019 11:39 am

I assume it's the profile ( so during SE6-series production) on the mating surface as that's where the felt seal goes?


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FRONT HUB FELT SEALS

Post by halfpenny » Fri Jun 14, 2019 12:00 pm

My observation was that a smaller 5a stub axle had a vertical link with small diameter felt seal shoulder. The replacement larger stub axle assembly had a larger diameter seal shoulder. Both seemed to be original assemblies. So not all vertical links are equal, at least so far as the diameter of the seal shoulder is concerned.
Last edited by halfpenny on Fri Jun 14, 2019 7:14 pm, edited 1 time in total.



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FRONT HUB FELT SEALS

Post by scimjim » Fri Jun 14, 2019 12:53 pm

Yep, confusing the two changes that occurred at different times during production - the stub axle doesn’t have a shoulder for the seal, it’s part of the upright.


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SECURE DRY STORAGE FOR YOUR SCIMITAR

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), 1300 SS1 (Number One) & Sarah's coupe.
CURE THE FAULT - NOT THE SYMPTOMS

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