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1 ton rear axle, same for Single and Dual wheel trucks?
#1146951 Thu Jan 28 2016 05:56 PM
Joined: May 2005
Posts: 9,146
G
Grigg Online OP
.
Can someone please help interpret and confirm if the Eaton H-072 rear axle as used in the single and the dual wheel 1 ton AD trucks (47-54) are the same or not?
Specs from shop manual on this (and other) axles.

I'm thinking same because if any difference it'd likely be in hub, drum, and overall width. Excepting a possible difference in stud length for one or two wheels.
The 1 ton GMC is approximately model 250.. I haven't yet made sense of the model numbers, adaptations, preceding letters, following numbers, and how to interpret all that in the parts book.

Rear drums, 14x2.5" parts catalog PICTURE I don't see any differentiation for single or dual wheel truck?
Rear hubs parts catalog PICTURE part 2059324 note says "with standard axle & dual wheels".

Finally, complete axle listing in the parts book PICTURE
Axle part number 3693825 fits 18 X 5.00" 8 stud wheel "same as STD axle except wheel bolts".
Standard axle is 3693800.

So if I'm reading all that correctly if the AD 1 ton truck had single or dual wheels the rear axle complete including brakes and hubs are all the very same parts with exception of the wheel stud length?

To add to the above I had measured my old 52 1 ton single wheel axle to be 62-5/8" wide and the 51 GMC dual wheel axle recently measured at 62-7/8" So pretty much the same Wheel Mounting Surface to "WMS" measurements.

Grigg



1951 GMC 250 in the Project Journals [stovebolt.com]
1948 Chevrolet 6400 [stovebolt.com] - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup [stovebolt.com]
---All pictures [picasaweb.google.com]---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-
Re: 1 ton rear axle, same for Single and Dual wheel trucks?
Grigg #1146975 Thu Jan 28 2016 07:39 PM
Joined: Sep 2001
Posts: 30,010
ace skiver
Pick a year, Grigg, and then look at the info in that year's Specification Manual (I think it will be in there):

http://chevy.oldcarmanualproject.com/chevyresto/index.htm


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
Z-series (54/55) GMC 350 (2-ton) COE [1954advance-design.com] - now part of Dave's family
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engine are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
Re: 1 ton rear axle, same for Single and Dual wheel trucks?
Grigg #1147003 Thu Jan 28 2016 10:14 PM
Joined: Feb 2015
Posts: 277
M
Shop Shark
Grigg,

Probably no help, but as you know, my 53 HO72 Dually rear is out of the truck and easy to measure if you need anything. Complete, drum to drum, minus the carrier.

Larry W.


1953 3800 Dually Flatbed
Re: 1 ton rear axle, same for Single and Dual wheel trucks?
Grigg #1147066 Fri Jan 29 2016 03:26 AM
Joined: May 2005
Posts: 9,146
G
Grigg Online OP
.
Thanks Tim, that also looks like they're the same but less detail, less conclusive, than the parts book.

I think I have presented enough pertinent information in those parts book pages/pictures linked already? But I'm not fully confident I'm reading it right.

Some day at a Stovebolt gathering we should have a classroom lesson on how to use and understand the old GM parts books. I'd sign up for that real quick!

Larry, what I don't have on hand is a single wheel axle to compare side by side with my dual.

Grigg


1951 GMC 250 in the Project Journals [stovebolt.com]
1948 Chevrolet 6400 [stovebolt.com] - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup [stovebolt.com]
---All pictures [picasaweb.google.com]---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-
Re: 1 ton rear axle, same for Single and Dual wheel trucks?
Grigg #1147088 Fri Jan 29 2016 04:51 AM
Joined: Feb 2015
Posts: 277
M
Shop Shark
Grigg,

Gotcha, I was thinking you had one in the red truck.
Disregard.

Larry W.


1953 3800 Dually Flatbed
Re: 1 ton rear axle, same for Single and Dual wheel trucks?
Grigg #1147099 Fri Jan 29 2016 06:37 AM
Joined: May 2005
Posts: 9,146
G
Grigg Online OP
.
Gave it away years ago..

Re: 1 ton rear axle, same for Single and Dual wheel trucks?
Grigg #1147123 Fri Jan 29 2016 02:16 PM
Joined: Feb 2015
Posts: 277
M
Shop Shark
Originally Posted by Grigg
Gave it away years ago..



DOH!!


1953 3800 Dually Flatbed
Re: 1 ton rear axle, same for Single and Dual wheel trucks?
Grigg #1147126 Fri Jan 29 2016 02:57 PM
Joined: Jan 2015
Posts: 208
B
Shop Shark
Well I wish we would have had this conversation 3 months ago when I had a 1-ton Single wheel axle laying on the ground behind my shop. I have some pictures of the 5.14 gears with PN# and some of the axle itself but not too may measurements.


1949-52 Chevy 3800 1-Ton Flatbed
In the Stovebolt Gallery
More pix on Photobucket
Re: 1 ton rear axle, same for Single and Dual wheel trucks?
Blind1968 #1147127 Fri Jan 29 2016 03:02 PM
Joined: Feb 2015
Posts: 277
M
Shop Shark
Originally Posted by Blind1968
Well I wish we would have had this conversation 3 months ago when I had a 1-ton Single wheel axle laying on the ground behind my shop. I have some pictures of the 5.14 gears with PN# and some of the axle itself but not too may measurements.


Again, DOH!!!


1953 3800 Dually Flatbed
Re: 1 ton rear axle, same for Single and Dual wheel trucks?
Grigg #1149912 Sat Feb 13 2016 12:57 PM
Joined: Nov 1995
Posts: 4,537
J
Unrepentant VW Lover
Um, I *do* have an HO72 sitting on jack stands in my shop at this very moment. And it is the one Grigg gave away. If someone would coach me through the measurements to take, I will gladly make the attempt...


John
So long and thanks for all the fish!

'49 Chevrolet 3804

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