Making a 4x4 from a 6x6 ?

1951M1078 · Mar 23, 2016

How hard would it be to make a M1088 MTV 6x6 into a 4x4 ?

I keep seeing them going for lower $ or not being bid on at all.

I have taken a tractor from 2x4 to 2x2 on my Semi/RV conversion.
Know it would be some work but maybe it could be done ?

Randy

Yes I know,"just get a M1078".

bikeman · Mar 23, 2016

First it was bobbing M35s, then M939 trucks... now the FMTVs... are none safe?! rofl

1951M1078 · Mar 23, 2016

Oh,THANK'S !LOL

Maybe I need to rethink my 4x4 RV and open it up to a 6x6 ? Need to go and look at how long they are.

coachgeo · Mar 23, 2016

GO FOR IT and send me what you remove. I'll find someway to get rid of the unwanted extra axle and suspension pieces. Will probably store them under my 1078 till I find the most ecological way to properly dispose of the stuff.

1951M1078 said:
How hard would it be to make a M1088 MTV 6x6 into a 4x4 ?

I keep seeing them going for lower $ or not being bid on at all.

I have taken a tractor from 2x4 to 2x2 on my Semi/RV conversion.
Know it would be some work but maybe it could be done ?

Randy

Yes I know,"just get a M1078".

jasonjc · Mar 23, 2016

1951M1078 said:
I have taken a tractor from 2x4 to 2x2 on my Semi/RV conversion.
Know it would be some work but maybe it could be done ?

Randy

Yes I know,"just get a M1078".

A 2x4 to 2x2????

Is that like a hover board????

1951M1078 · Mar 23, 2016

No,silly. Its just removing one drive axle. LOL

OK I just reread it. My bad. 6x6 to a 4x4 .

1951M1078 · Mar 23, 2016

This has me thinking ?
The box is 7'6' x 17'

1951M1078 · Mar 23, 2016

So is the rear most axle the same as a M1078 ?

scottmandu · Mar 23, 2016

Front and rear axles are the same from 4X4 to 6X6. One issue that you may consider is the frame rails are made of heat treated steel, so cutting/welding etc could very well weaken it.

I don't think you will end up any cheaper than buying a 4X4..

1951M1078 · Mar 23, 2016

As I start looking at this idea I think I would use the holes that are their and just do some plating. Been thinking about a air bag rear ?

1951M1078 · Mar 23, 2016

Is their a selector switch for one or two driving rear axles ? Or is it full time ?

NDT · Mar 23, 2016

scottmandu said:
Front and rear axles are the same from 4X4 to 6X6.

Where did you get this information? Front is the same. Rear not so much.

Flyingvan911 · Mar 23, 2016

Why not find someone with a LMTV and trade? The LMTV is already single rear axle.

Suprman · Mar 23, 2016

The center axle has a offset geared input and output. I don't see any point in bobbing a 6x6 truck when the 4x4 version is widely available. There is a lot more air brake stuff going on in the lmtv compared to the m939 trucks. The 4x4 trucks have pretty clear lower frame rails of you wanted to take off the bed and the spacers under it. On the 6x6 the trans cooler is under the bed and the rear shock mounts come up past the bed spacers.

1951M1078 · Mar 23, 2016

After looking a lot of photos it looks like a no-go. Thanks for the input guy's.

scottmandu · Mar 23, 2016

NDT said:
Where did you get this information? Front is the same. Rear not so much.

The rear as in back axle, not the intermediate axle. The intermediate axle is unique to the MTV.

From http://www.allisons.org/ll/4/Stewart-S/FMTV/

"Interchangeability of components was an important design objective to ease servicing and reduce costs. For example, the 4×4 and 6×6 trucks share front and rear axles, transmission and Caterpillar engine (225hp version in the 4×4 and 290hp version, courtesy of higher turbo boost, in the 6×6)."

Also most of the rear axle part numbers are the same..

1951M1078 · Mar 24, 2016

Still thinking about this. Other than the 5th wheel stuff is their anything ? When I did my Semi/RV I just pluged the 5th whell lines.

Been looking a photos of rear deck and see what is a cooler. Ideas what it is cooling ? Rear axle's ?

Still trying to find TM,s on this truck. Man it was used for alot of job's.

Oh, and I would keep the 6 x 6.

Suprman · Mar 24, 2016

Tran cooler. The 5ton cargo has it under the bed.

1951M1078 · Mar 24, 2016

Suprman, are the rear axles full time or switched ?

scottmandu · Mar 24, 2016

1951M1078 said:
Suprman, are the rear axles full time or switched ?

I believe the intermediate axle (middle) is part time.

EDIT I stand corrected..

Making a 4x4 from a 6x6 ?

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