Unimog U408 Agrar

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Unimog U408 Agrar

Beitragvon vucko » 25.01.2020, 10:24

Dear community,

Hello from Serbia. I am off road enthusiastic and fun of Steyr-Daimler-Puch off road vehicles.
Right now I am owner of two Pinzgauers 710MS and 710K and one Puch GD300 GDN3-2 (ex Austrian army vehicle).

I am thinking that my next project could be an Unimog. My first wish would be small-size Unimog 407 or 408, alternatively mid-size 424/427 (U1000 U1200) or 417 (U900).
Anyhow, the market of second-hand Unimogs In Serbia is poor, so I have very limited choices.

I have found one U408 but Agrar version. There is 3/6 speed gearbox version (the 4/8th gear is blocked).
Using MB-EPC application, I have tried to find difference between this U408 Agrar and "normal" U408 truck, expecting that Agar version has "slower" gear ratios making them more suitable for agriculture tasks.
On my surprise (if I am not wrong), the Unimog 408 Agrar I am looking right now has faster gear-ration in differential 24:7 compare to the specification of "normal" U408 which has 27:7!?

To make this story about U408 short:
1. Does this particular U408 Agrar has same gear ratios as normal U408 truck version?
2. If I decide to purchase this particular U408 could it be modified to make it faster than Agriculture version (e.g.to have cruise speed cca 70 km/h)? I suppose that 4/8th speed is mechanically blocked and it can be unblocked. What about other transsmision components? Is it only matter of unblocking the 4/8 gear in gearbox UG 2/30?

Needles to say that any other advice is more then welcome!

VIN of U408 I am looking right now: WDB4081001W179525
VIN of the “normal” Unimog I used for comparation (found on net): WDB4081011W191476 (this one is U90 Turbo)

Purpose of the Unimog would be off-road and camping in the mountains.

Here are some clips about our activities:

https://www.youtube.com/watch?v=miIMwplzNrs

https://www.youtube.com/watch?v=RF4NabYjCT4

https://www.youtube.com/watch?v=nzqDiBOqADA&t=341s

Thank you for help!
Predrag
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vucko
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Re: Unimog U408 Agrar

Beitragvon Helmut-Schmitz » 26.01.2020, 14:00

Hallo
I have found one U408 but Agrar version. There is 3/6 speed gearbox version (the 4/8th gear is blocked).
the 4/8th gear does not exist in this gearbox version. To instal this gears, you have to change gear main shaft and you need additional parts
The other gear ratios are always the same. For U90 axelratio 24:7 was factory standard until VIN 183 458
Datenkarte 4081001W179525.png
, standard ratio for U90turbo is 27:7.
Datenkarte 4081011W191476.png
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Re: Unimog U408 Agrar

Beitragvon vucko » 27.01.2020, 13:29

Thank you a lot Helmut!
You help me to decide that this particular U408 Agrar is not the right choice for me.

This weekend I have checked two 425 U1500.
One is the agrar VIN 42514110082616, while for another one I am not sure which kind of vehicle is VIN 42514110000655 (this one is older than 1983 so no data in Mercedes EPC).

Br, Predrag
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Re: Unimog U408 Agrar

Beitragvon Helmut-Schmitz » 27.01.2020, 21:16

Hello Predrag
425141 is always an U1500
425121 is always an U1300.

A U1500 is much heavier and wider than a U90. But you can user bigger tires until 24". The agricultural version was often equipped with a lower axle ratio to achieve more tractive power. You wrote that you want to drive on and off-road. You are faster with the standard final drive ratio
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