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Endurant/Eaton automated transmissions

cfherrman

Senior Member
Joined
Jun 3, 2022
Messages
2,335
Location
Hays, Kansas
Allisons can stall indefinitely as long as your trans cooler is big enough.

And yes I power brake them to build boost when stuck in the mud to get out while a manual you will either literally break them from drive line shock or by the time you get to the front of the hole you start to build boost and do nothing.

You cannot be as capable off road as a Allison without a torque converter
 

cfherrman

Senior Member
Joined
Jun 3, 2022
Messages
2,335
Location
Hays, Kansas
You don't know what your talking about, your calling it a auto shift, there is a big difference
between any early and late designs. If you haven't driven one you have nothing to compare.
It's good you like slush boxes----stick with them.

No torque converter, no planetary gears, it's not a automatic
 

pushbroom

Well-Known Member
Joined
Feb 4, 2017
Messages
119
Location
Saskatchewan
The endurants have been pretty good. I find they shift better then the ultrashift eatons. Early models have bearing/case issues but those seem to be resolved now. The 12speeds have no cooler on them which is why the weight rating is only 110,000lbs. The 18speed endurants are fairly new still and come with coolers for higher weight ratings.
Air dryer maintenance is a critical and they have to use the expensive bendix cartridges
 

Truck Shop

Senior Member
Joined
Dec 7, 2015
Messages
20,544
Location
WWW.
The allison is a hydraulicly operated transmission therefore it is a automatic, automatic, automatic.
The AMT is a--and careful now----Automated, automated, automated {combined with} the word
manual, manual, manual transmission.
It operates by computer control to manual shift bar. It shifts rapidly with no manual operation by
it's human operator unless it is in manual mode. It was not designed or to emulate a allison in a
buried up to your ass issue. cfherrman--nowhere did I say it was a automatic. I said it {will do
the same thing} and that meant operated under normal off road conditions. What you {are} using
it for is just more than likely, not many on here do. Automatic and Automated are two words that
are similar but have two different descriptions.
Your right I don't know, two questions

Do they have a torque converter

Can you you power brake them to 20+psi of boost
What you are trying to accomplish is inserting/pinpointing a very certain area. You are
trying to make a mountain out of a mole hill about getting stuck. The {OP} already has
a {Truck/Trucks} with allisons, he didn't ask about allisons, he asked about AMT's.
*
I somehow doubt {very much} he is torturing his equipment in the same environment as you.
 

Vetech63

Senior Member
Joined
Aug 10, 2016
Messages
7,120
Location
Oklahoma
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cfherrman

Senior Member
Joined
Jun 3, 2022
Messages
2,335
Location
Hays, Kansas
The allison is a hydraulicly operated transmission therefore it is a automatic, automatic, automatic.
The AMT is a--and careful now----Automated, automated, automated {combined with} the word
manual, manual, manual transmission.
It operates by computer control to manual shift bar. It shifts rapidly with no manual operation by
it's human operator unless it is in manual mode. It was not designed or to emulate a allison in a
buried up to your ass issue. cfherrman--nowhere did I say it was a automatic. I said it {will do
the same thing} and that meant operated under normal off road conditions. What you {are} using
it for is just more than likely, not many on here do. Automatic and Automated are two words that
are similar but have two different descriptions.

What you are trying to accomplish is inserting/pinpointing a very certain area. You are
trying to make a mountain out of a mole hill about getting stuck. The {OP} already has
a {Truck/Trucks} with allisons, he didn't ask about allisons, he asked about AMT's.
*
I somehow doubt {very much} he is torturing his equipment in the same environment as you.

You said these new auto shifts can do the same thing as an automatic, but they can't.

They cannot prevent you from getting stuck off road, and they cannot help you to get out of road as well.

I do not torture my equipment, I keepy stuff up better than most people and guys slamming into drive lines by dumping the clutch is way harder than power braking to 20 psi. I have never broken anything with an automatic.
 

Acoals

Senior Member
Joined
Dec 15, 2019
Messages
1,570
Location
Wisconsin
Occupation
Jack of all trades/Master of none
This transmission or that transmission is not going to "prevent you from getting stuck"

Driving skill is what keeps a truck from getting stuck, and that includes know when to stop.

It also takes driving skill to avoid rolling trucks over . . .
 

CM1995

Administrator
Joined
Jan 21, 2007
Messages
14,383
Location
Alabama
Occupation
Running what I brung and taking what I win
Air dryer maintenance is a critical and they have to use the expensive bendix cartridges

Thanks for the info.

I'd like to know more about the maintenance side and if it's more, less or the same as a similar Allison.
 

Shimmy1

Senior Member
Joined
Aug 14, 2014
Messages
4,858
Location
North Dakota
This transmission or that transmission is not going to "prevent you from getting stuck"

Driving skill is what keeps a truck from getting stuck, and that includes know when to stop.

It also takes driving skill to avoid rolling trucks over . . .
I will give CF just a bit of leeway here, but, by and large, if you can get out with an automatic, there are guys who would be able to get out with anything else as well. I have never grenaded a clutch, shattered a u-joint, twisted a driveshaft, or lost a differential crawling out of a hole. Would I want to do that sort of thing everyday? Hell no, that's why they make an automatic. But to say you absolutely have to have an automatic is inaccurate.
 

Truck Shop

Senior Member
Joined
Dec 7, 2015
Messages
20,544
Location
WWW.
You said these new auto shifts can do the same thing as an automatic, but they can't.

They cannot prevent you from getting stuck off road, and they cannot help you to get out of road as well.

I do not torture my equipment, I keepy stuff up better than most people and guys slamming into drive lines by dumping the clutch is way harder than power braking to 20 psi. I have never broken anything with an automatic.
As Acoals has said and I pinpointed getting stuck is a driver issue. Weren't you the one with
the tire thread surface/patch area too
*
And one more point the DT12 works really well because the DD series engines develop 1500 lbs
torque very early below 1000 rpm which makes them great for off road.
 

Truck Shop

Senior Member
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Dec 7, 2015
Messages
20,544
Location
WWW.
I'd like to know more about the maintenance side and if it's more, less or the same as a similar Allison.
Two reasons---The Bendix Hi Flow air dryers with the cartridge # 5009041PG are a metric
thread and also have a built separator to stop the lighter weight oils 10X30 from
contaminating the desiccant water separator section of cartridge. It is not advised to
alter system by using a early style dryer. Cost of spin-on cartridge is around $145.00.
 

Truck Shop

Senior Member
Joined
Dec 7, 2015
Messages
20,544
Location
WWW.
6 speed and a 4 speed aux. and you can have a couple extra.
Nope---not many know how to drive those so Allison needs to get off their ass and build
a 22. Which leads to the question--just how many on here can drive a twin gear box?
Only a hand full I'm guessing.
 

pushbroom

Well-Known Member
Joined
Feb 4, 2017
Messages
119
Location
Saskatchewan
Thanks for the info.

I'd like to know more about the maintenance side and if it's more, less or the same as a similar Allison.

Maintenance Id say is less then an allison. Linehaul oil change is 750,000miles. Less for vocational.
Initial cost is less. Rebuilding one/ buying a replacement is less then an allison.
Big issue in the medium duty petes with allisons (dump trucks and grain trucks) is the engine fan running constant to try to get rid of all the heat the allison makes. No issues like that with an autoshift.
Warranty is better too as you don't get kicked between a Peterbilt shop and an Allison shop, with each saying its the others issue. All eaton problems get warrantied at the truck OEM shop.
 
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