PN for replacement rear hub dust cap

RF_Burns

RF_Burns

Super Moderator
Staff member
Sep 7, 2008
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Ontario Canada
Anyone have a better replacement dust cap than the Dorman (13997 I believe) in the GMCMI sub book.

I got a couple of the Dormans and found that while the right 2.5" diameter, they will not tap into place properly. The shoulder is tapered so it just
falls back out.

Thanks.

--
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
 
Bruce, it's not the Dorman caps, it's your hubs. That bore varies a whole
bunch from hub to hub. Those things are crude.
Jim Hupy

> Anyone have a better replacement dust cap than the Dorman (13997 I
> believe) in the GMCMI sub book.
>
> I got a couple of the Dormans and found that while the right 2.5"
> diameter, they will not tap into place properly. The shoulder is tapered
> so it just
> falls back out.
>
> Thanks.
>
> --
> Bruce Hislop
> ON Canada
> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
> My Staff says I never listen to them, or something like that
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
 
Should there really be two caps? Mine has a dust cap over the nut and then
another larger on the hub. Is this necessary?
bdub

> I have new GM NOS in the box caps on hand. Both the inter, and the
> larger chrome ones. Bob Dunahugh
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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>
 
Hi Jim,
No doubt the hubs are likely not machined to tight tolerances there, but the OEM caps fit well. Two of them had cracks from previous removals so I
wanted to replace those. The Dorman tapered from 2.46" up to 2.6"s and not in a straight taper but more roundish. I think that is more likely the
poor tolerance.

Hi Bob,
I'd be interested in purchasing a couple inner caps from you. Since I'm in Canada, I'LL try sourcing something local due to the high shipping and
customs costs.

Thanks guys.

--
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
 
Bruce, I have worked on dozens of these hubs, and both the smaller hub
dust seals, as well as the cosmetic larger ones frequently are quite
sloppy. If your originals fit well, I would straighten them with a body
hammer and anvil hardy and use them. Especially the inner, small ones. You
do not want any dust or water getting in there.
Jim Hupy

> Hi Jim,
> No doubt the hubs are likely not machined to tight tolerances there, but
> the OEM caps fit well. Two of them had cracks from previous removals so I
> wanted to replace those. The Dorman tapered from 2.46" up to 2.6"s and
> not in a straight taper but more roundish. I think that is more likely the
> poor tolerance.
>
> Hi Bob,
> I'd be interested in purchasing a couple inner caps from you. Since I'm
> in Canada, I'LL try sourcing something local due to the high shipping and
> customs costs.
>
> Thanks guys.
>
> --
> Bruce Hislop
> ON Canada
> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
> My Staff says I never listen to them, or something like that
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
 
Try straightening them and brazing the cracks.

Emery Stora

>
> Bruce, I have worked on dozens of these hubs, and both the smaller hub
> dust seals, as well as the cosmetic larger ones frequently are quite
> sloppy. If your originals fit well, I would straighten them with a body
> hammer and anvil hardy and use them. Especially the inner, small ones. You
> do not want any dust or water getting in there.
> Jim Hupy
>

>>
>> Hi Jim,
>> No doubt the hubs are likely not machined to tight tolerances there, but
>> the OEM caps fit well. Two of them had cracks from previous removals so I
>> wanted to replace those. The Dorman tapered from 2.46" up to 2.6"s and
>> not in a straight taper but more roundish. I think that is more likely the
>> poor tolerance.
>>
>> Hi Bob,
>> I'd be interested in purchasing a couple inner caps from you. Since I'm
>> in Canada, I'LL try sourcing something local due to the high shipping and
>> customs costs.
>>
>> Thanks guys.
>>
>> --
>> Bruce Hislop
>> ON Canada
>> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
>> http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
>> My Staff says I never listen to them, or something like that
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
 
The inner one is really a grease cap. The outer one is a dust cap.

Emery Stora

>
> Should there really be two caps? Mine has a dust cap over the nut and then
> another larger on the hub. Is this necessary?
> bdub
>

>
>> I have new GM NOS in the box caps on hand. Both the inter, and the
>> larger chrome ones. Bob Dunahugh
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
 
I could fix them, but didn't think they would be so hard to find. One had been previously replaced by a Dorman which looked exactly like the new ones
I ordered, but it fit. It also had rust inside it, so I did not want to re-use it. I ordered 2 new Dorman's, one to replace the existing rusted
Dorman, and one to replace another that was beatup and cracked. Of the two new Dorman's, I could only get one to stay on, so for now I've reused the
OEM cracked one.

I don't have torches to braze them, but looks like there is no viable replacement, so I may need to take it to a welding shop to fix.

--
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
 
You might be able to salvage your tapered caps by using an exhaust pipe expander to gently correct the tapered section so that the cap will fit better. The expander trick may also help make the 2.45” trailer caps fit better if you decide to try them.

Les Burt
Montreal
'75 Eleganza 26'

>
> Does anyone have an open hub so they can easily measure the ID of the dustcap surface.
>
> I found some trailer hub caps that are 2.45", wondering if they would fit.
>
> --
> Bruce Hislop
> ON Canada
> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
> My Staff says I never listen to them, or something like that
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
 
Bruce Hislop writes : Does anyone have an open hub so they can easily measure the ID of the dustcap surface ? Bruce; I have two reference hubs here
that I use for

fitting up brake projects. The major dia. on both hubs is 3.540" +/- 0.001" , the minor dia for the smaller ( inner ) dust cap is 2.500" +/- 0.001",
hope this helps. If you

require further measurements , call or email me .

Cheers.....Albert Branscombe
Barbi , the 23 foot Birchaven
 
I used the Dorman Ford replacements IIRC. Not sure if I still have the package out in the RV. Check tomorrow if I remember :roll:
--
Terry Kelpien

ASE Master Technician

73 Glacier 260

Smithfield, Va.
 
Jim how may of the chrome outer hub covers do you have and how much? Email me mailto:dservati1

Thanks Dave
--
'78 Palm Beach car nut & new to RV'ing
26 ft. 403 OEM wheels, 2 ACs, Pod, ladder, macerator
On FaceBook as David Martin
585-953-53OO call or text
 
Albert,
Thanks for those measurements. I dug around in my scrap metal bucket and found the old Dorman cap. It also has a taper, but not as much, it measures
2.503 at the largest point.

I found some trailer caps which are also 2.503 that are not expensive, so I'll order a set of two and try them. From the picture though they are not
very deep. I'll report what I find.
--
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
 
Dorman Help! Products, kind of sort of almost like the OEM parts plus or minus.
--
John Lebetski
Woodstock, IL
77 Eleganza II
 
Found the card from the dust cap package(I keep it in GMC)...not Dorman package, came from NAPA. Part # 735-1404. Says it fits Ford and on the back
says fits 2.5 inch wheel hubs.
--
Terry Kelpien

ASE Master Technician

73 Glacier 260

Smithfield, Va.
 
David,
Contact our parts and have them check on used rear chromed dust cap.
Should we have them, they will be around $20 each.

> Found the card from the dust cap package(I keep it in GMC)...not Dorman
> package, came from NAPA. Part # 735-1404. Says it fits Ford and on the back
> says fits 2.5 inch wheel hubs.
> --
> Terry Kelpien
>
> ASE Master Technician
>
> 73 Glacier 260
>
> Smithfield, Va.
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
 
I googled your NAPA number and found an Amazon listing. The photo there shows the exact cap I have under Dorman, including the "M" stamp.

It shows it as being 2.43". Hence maybe the taper so it will fit a range of diameters. To bad it won't stay on!

Thanks for looking :)
--
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
 
Rechecked Napa Number 735-1404 and here are the specifications:

Hub I.D. 2.43 in.
Outer Finish Silver
Package Quantity 1
Product Application Wheel Hub Dust Cap
UNSPSC 31171524Also under features and benefits:

- Protects wheel bearings by providing a tight seal against the elements
- Save time, money and labor by replacing only the Wheel Bearing Dust
Cap - instead of the entire wheel hub
- Durable steel design
- Available in many different sizes

So what other sizes are available?

> I googled your NAPA number and found an Amazon listing. The photo there
> shows the exact cap I have under Dorman, including the "M" stamp.
>
> It shows it as being 2.43". Hence maybe the taper so it will fit a range
> of diameters. To bad it won't stay on!
>
> Thanks for looking :)
> --
> Bruce Hislop
> ON Canada
> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
> My Staff says I never listen to them, or something like that
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
 
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