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Old Apr 29, 2022 | 10:21 AM
  #1  
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Upgraded axle

In the trailer tow high capacity option, one of the features listed is upgraded axle. Does anyone know what is upgraded about it other than spring rates?
 
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Old Apr 29, 2022 | 10:43 AM
  #2  
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Originally Posted by Lariat460
In the trailer tow high capacity option, one of the features listed is upgraded axle. Does anyone know what is upgraded about it other than spring rates?
Could be that it uses the Dana M275 instead of the Sterling. The Dana was touted as the beefier of the two but they had some issues discussed at length on the forum. We really need to know more about the configuration to say what the differences are.
 
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Old Apr 29, 2022 | 10:50 AM
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High Capacity Tow Package on the F250 gets you an extra leaf spring, and the Dana Axel.

The Dana is certainly 'beefier' than the Sterling. From Ford the ratings are about the same, but I heard Ford derates the Dana for their applications.

The aftermarket support for the Dana is still almost none existent, while the Sterling has lots of options.
 
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Old Apr 29, 2022 | 10:58 AM
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Originally Posted by harmanrk
High Capacity Tow Package on the F250 gets you an extra leaf spring, and the Dana Axel.

The Dana is certainly 'beefier' than the Sterling. From Ford the ratings are about the same, but I heard Ford derates the Dana for their applications.

.
Except when it is recalled because the tubes are collapsing under the springs.... I do not recall this ever being an issue with the Sterling. The Dana has 4" tubes, the Sterling 3.5" the Dana has a 10.8" ring gear, the Sterling a 10.5. One has a sterling reputation, the other has had some teething problems. The Dana was certainly intended to be beefier, maybe someday that will prove to be the case.

I was pretty insistent on getting my truck with the Dana. It didn't work out that way. I am pleased to have ended up with a Sterling, my fourth one since 1999.
 
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Old Apr 29, 2022 | 11:40 AM
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The Dana M275 wall thickness issue was at the spring perch, and the repair to existing axles is to just weld the front and back of the perch so that all four sides are welded.

That fix doesnt address the axle tube wall thickness that is lacking, so id stay away from the M275 if you intend to max out payload and axle ratings on any truck. Not sure how many M275s were already manufactured before they corrected the actual design flaw, but id bet trucks into 2023 could have the "fixed" welded spring perch version while they use the rest of them up.
 
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Old Apr 29, 2022 | 11:48 AM
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Originally Posted by OverheadCram
The Dana M275 wall thickness issue was at the spring perch, and the repair to existing axles is to just weld the front and back of the perch so that all four sides are welded.

That fix doesnt address the axle tube wall thickness that is lacking, so id stay away from the M275 if you intend to max out payload and axle ratings on any truck. Not sure how many M275s were already manufactured before they corrected the actual design flaw, but id bet trucks into 2023 could have the "fixed" welded spring perch version while they use the rest of them up.
The recall states, "The recalled part was.....taken out
of production on 05/15/2021". That is why only certain 2020-2021MY trucks are affected by the recall.

They do have additional wording that is a bit contradictory, but could indicate that weld repaired axles continued to be installed, "Existing rear axle housing stock was corrected via weld repair on the spring seats. New rear axle housing stock with an increased wall thickness design at the spring seats were introduced as the permenant corrective action." But I'm not aware of any 2022MY Dana axles being of the weld repaired variety. So I do not think the thin walled Dana M275 axle is still being used in current, or upcoming production.
 
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Old Apr 29, 2022 | 12:36 PM
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Originally Posted by 4wd6.7L
They do have additional wording that is a bit contradictory, but could indicate that weld repaired axles continued to be installed, "Existing rear axle housing stock was corrected via weld repair on the spring seats. New rear axle housing stock with an increased wall thickness design at the spring seats were introduced as the permenant corrective action." But I'm not aware of any 2022MY Dana axles being of the weld repaired variety. So I do not think the thin walled Dana M275 axle is still being used in current, or upcoming production.
When I first was made aware of said recall, I looked at the spring perches on my 2022 SRW with the Dana M275 and sure enough it had all four sides welded. Build date of that truck was 11/2021. Ive ordered three new trucks since I sold that one and made sure I got the Sterling 10.5 to avoid issues.
 
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Old Apr 29, 2022 | 12:44 PM
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Originally Posted by OverheadCram
When I first was made aware of said recall, I looked at the spring perches on my 2022 SRW with the Dana M275 and sure enough it had all four sides welded. Build date of that truck was 11/2021. Ive ordered three new trucks since I sold that one and made sure I got the Sterling 10.5 to avoid issues.
Surprised Ford had that much stock of those axles sitting around. They definitely aren't all roling off the line with the weld repaired axles still. I wonder when they did finish using them up.
Did you post pictures of that in the reacall thread?
 
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Old Apr 29, 2022 | 12:47 PM
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While the Dana/4.30 really cranks up the tow numbers, does that change the rear gawr #? Likely not due to other limitations, tires/psi etc. I looked at a F250 9,900gvw 4.30s rgawr was 6,340lbs.

Looking at payload stickers Dana weights bit more too, which makes sense given 4" tube vs sterling.
 
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Old Apr 29, 2022 | 01:04 PM
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Originally Posted by 4wd6.7L
Surprised Ford had that much stock of those axles sitting around. They definitely aren't all roling off the line with the weld repaired axles still. I wonder when they did finish using them up.
Did you post pictures of that in the reacall thread?
I did not post any pictures to any threads about said recall. I didnt find out about that information from this site.

I imagine they didnt put the welded repaired old stock under the diesels anymore as those have higher tow ratings and or more likely to be maxed out over the gas trucks. My truck was a 7.3L gas.
 
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Old Apr 29, 2022 | 01:07 PM
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Originally Posted by PowerKid
While the Dana/4.30 really cranks up the tow numbers, does that change the rear gawr #? Likely not due to other limitations, tires/psi etc. I looked at a F250 9,900gvw 4.30s rgawr was 6,340lbs.

Looking at payload stickers Dana weights bit more too, which makes sense given 4" tube vs sterling.
The tire options increase the RAWR. 275/70R18 and the 20" wheels get the higher weight rating. If you order an XL with the 17s or any model with 18s and tire size 265/75/R18 you get a lower RAWR on the sticker.
 
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Old Apr 29, 2022 | 01:34 PM
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From: Chaz
The HCTP F250 is a 10,800 derated f350 with a lower rear gawr sticker rating.

I think the purpose is so you can get around in places that have restrictions on “1 ton” type of trucks.

If you arent a sticker **** you can also get a 350 srw with various gvwr all the way down to 10,000.

If you dont want the tall 20s and are not pulling a heavy gooseneck or 5th wheel the standard 250 may be a better set up.

Originally Posted by OverheadCram
The tire options increase the RAWR. 275/70R18 and the 20" wheels get the higher weight rating. If you order an XL with the 17s or any model with 18s and tire size 265/75/R18 you get a lower RAWR on the sticker.
On the 350 what you are saying gets the higher sticker gawr.

And also in reality, so yes you are correct in fact. 125 rated tires vs 121/123
 
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Old Apr 29, 2022 | 05:40 PM
  #13  
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Originally Posted by OverheadCram
When I first was made aware of said recall, I looked at the spring perches on my 2022 SRW with the Dana M275 and sure enough it had all four sides welded. Build date of that truck was 11/2021. Ive ordered three new trucks since I sold that one and made sure I got the Sterling 10.5 to avoid issues.
My July 2021 (MY 22) build (F350/7.3/4.3) has the upgraded M275 and isn't welded on all sides. There's no rhyme or reason, unless its because its a 1 ton.
 
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Old Apr 29, 2022 | 08:09 PM
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Originally Posted by OverheadCram
The Dana M275 wall thickness issue was at the spring perch, and the repair to existing axles is to just weld the front and back of the perch so that all four sides are welded.

That fix doesnt address the axle tube wall thickness that is lacking, so id stay away from the M275 if you intend to max out payload and axle ratings on any truck. Not sure how many M275s were already manufactured before they corrected the actual design flaw, but id bet trucks into 2023 could have the "fixed" welded spring perch version while they use the rest of them up.
yep, I opted for 3.55 to stay away from the m275 on my 250 because I didn’t want to take a chance with the Dana so soon after the “fix” was “implemented”. I might get 4.30 on my next order if the current production batch of trucks with m275 look like they had the bugs worked out if the axle.
 
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Old Apr 30, 2022 | 07:47 AM
  #15  
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My only beef with my m275 is there is no locker option other then factory.
 
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