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Joined: Sep 2018
Posts: 86
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'Bolter
'Bolter
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Joined: Sep 2018
Posts: 86
Hi there,

I've gotten to working on my front brakes/hub assemblies on the 1955 2 ton and I have a bad front hub assembly. My inner bearing cup is loose in the bore. It looks like at some point the cup had spun inside the hub bore. Someone attempted to stake the bore in the past by the look of it. So I am searching for a replacement.

Does anyone have a good front hub assembly lying around that they would sell ?

Thanks
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IMG_20210305_142445933.jpg (224.67 KB, 143 downloads)
IMG_20210305_142839761.jpg (151.71 KB, 142 downloads)

Joined: Jun 2011
Posts: 5,096
E
Crusing in the Passing Lane
Crusing in the Passing Lane
E Offline
Joined: Jun 2011
Posts: 5,096
Is the bore smooth enough to use shim stock? I have a pair of front hubs including brakes, spindles, etc.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
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'Bolter
'Bolter
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Posts: 86
Ed. The bore is a mess. Including the bore that the seal presses into. I wanted to try find a good replacement before getting the lathe going. Ed If you are interested in selling one of your hubs maybe send me a private message and we can see if the part is the same and work out the details.

Thank you

Joined: Mar 2004
Posts: 6,236
M
'Bolter
'Bolter
M Offline
Joined: Mar 2004
Posts: 6,236
What's the casting number on the Hub?

4-3/4" or 5-1/4" wheel center hole size?

Asking for parts wanted in the tech section is really frowned on...so lets just figure out what part number you need here and then you can take buying and selling to the Swap Meet Section or via PM with sellers.

Mike B smile


Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
+++++
Silver Spring, MD
Joined: Nov 2005
Posts: 6,101
3
3B Offline
'Bolter
'Bolter
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Hy Noonan and guys, could you clarify if the truck in question is a 1955 "A" or first series or a 1955 "B" or second series? The hub casting number Mike B requested would also be helpful. If you could post the trucks serial number that would also be helpful.

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'Bolter
'Bolter
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Hi 3B

It's a second series 55 chevrolet.

5 bolt wheel flange. Casting # 3704482.

If anyone is curious. The casting numbers are found by looking inside of the hub assembly. Most likely covered in 65 year old grease

From my limited research so far these hubs were in use from 48 or so up to 56? Looks like 57 went to 6 bolt wheel flange.

Last edited by Noonan; 03/07/2021 5:49 PM.
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3B Offline
'Bolter
'Bolter
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Hy Noonan, thank you for the information, I'll check and see if I have one and get back to you.

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3B Offline
'Bolter
'Bolter
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Hy Noonan, a quick check of one of my parts books that covers up to the 55"B" series yielded your casting number as a part number for a new part for the 16 series and the 18 series (L.C.F.). I have one of these trucks, still partially assembled, kind of difficult to access at the moment. I will see how much of a hassle it will be to work on if the weather cooperates.

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'Bolter
'Bolter
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Casting 3704482 was used from 1954-59 on the 1-1/2 ton and 1954-55 on 2-ton, BUT the flange for the wheel center hole could be 4-3/4" or 5-1/4".

The part number for the 4-3/4" flanged hub is 3704489.

The part number for the 5-1/4" flanged hub is 3704482.

Mike B smile

Edit...this is based on my US Parts Books...

Last edited by Mike B; 03/08/2021 2:58 AM.

Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
+++++
Silver Spring, MD
Joined: Sep 2018
Posts: 86
N
'Bolter
'Bolter
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Joined: Sep 2018
Posts: 86
Originally Posted by 3B
Hy Noonan, a quick check of one of my parts books that covers up to the 55"B" series yielded your casting number as a part number for a new part for the 16 series and the 18 series (L.C.F.). I have one of these trucks, still partially assembled, kind of difficult to access at the moment. I will see how much of a hassle it will be to work on if the weather cooperates.

Ok thank you for all the help. I'm used to waiting for weather to cooperate smile No rush there

Originally Posted by Mike B
Casting 3704482 was used from 1954-59 on the 1-1/2 ton and 1954-55 on 2-ton, BUT the flange for the wheel center hole could be 4-3/4" or 5-1/4".

The part number for the 4-3/4" flanged hub is 3704489.

The part number for the 5-1/4" flanged hub is 3704482.

Mike B smile

Edit...this is based on my US Parts Books...

Mike, thank you for the information. I forgot to confirm the wheel center hole when I was in the shop today, I will have to check that. It will most likely correspond with what your parts books are showing for the casting number.


Thanks again

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'Bolter
'Bolter
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My dad and I spent the day spinning the hub on the lathe we made a sleeve and pressed it into place and we machined that to size. turned out really well.

Thanks for everyone's help I won't be needing another hub for the time being.
Attachments
IMG_20210308_140306040.jpg (245.97 KB, 60 downloads)
IMG_20210308_161222561.jpg (246.64 KB, 62 downloads)
IMG_20210308_151547739.jpg (195.74 KB, 61 downloads)
IMG_20210308_173835036.jpg (183.91 KB, 61 downloads)
IMG_20210308_191346015.jpg (174.96 KB, 59 downloads)

Joined: Jun 2011
Posts: 5,096
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Crusing in the Passing Lane
Crusing in the Passing Lane
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Joined: Jun 2011
Posts: 5,096
Good job, no chance to find new ones, modify damaged one a good save!

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Joined: Nov 2005
Posts: 6,101
3
3B Offline
'Bolter
'Bolter
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Posts: 6,101
Hy Noonan, great work, thanks for letting us know. I hope it all works well.

Joined: Feb 2004
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Kettle Custodian (pot stirrer)
Kettle Custodian (pot stirrer)
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Joined: Feb 2004
Posts: 29,885
Unless the wear in the casting is REALLY sloppy, Loctite green "Stud and Bearing Mount" can fill gaps up to about .015". I've used it pretty frequently for this exact type of situation with a good success rate.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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