939-809 parts interchange question

[USMC4302]

Apologies if this has been addressed -- search didn't come up with anything for me.

Anyway ... If I were to change out my NDT tires/wheels on my 809-series truck (817 to be exact), are the super singles I'm seeing on the 939-series trucks a form/fit replacement? From what I can tell from the two parts TM's, it would seem they do, but are there other issues involvced, or can it be a simple swap? Are all SS the same or are there different types?

Also, are the axle assemblies swappable between the two trucks? I see the p/n's are close but not exact ...

So the real question ... I was thinking of getting a non-runner 939 with super singles and pulling a few other bits and pieces (like the engine, etc) and then scrapping or selling the rest of it. Good plan? Bad plan?

Thanks for any input!

 

[M813A1]

The tires and rims should fit !! The axles are basicallt the except for the air brakes versus the Hdryaulic brakes !! Yes I think the axles are swappable but the rework need to make the air system work for the braker would be very difficult to rework . Your idea is good but it wouyld just be easier to get a running M939 and save to the you the hassle and monies need to by the other truck for parts, you could get 1 good truck for a little more.

 

[USMC4302]

Thanks for the info! I neglected to remember about the brakes .... good point. I'll check the P/N's on the internals, then.

But I'm not a big fan of the 939 series and will prefer to keep my 817. In my humble, non-expert opinion, it's a matter for amiable debate as to which one is "the better truck."

 

[Csm Davis]

Hey Marine, why not get a 932a1 and put your bed on it, the cab protector will need to be modified to clear the top but not a big deal and the 932 comes with a wet kit on it so at most you might have to use your pump. Lots easier than swapping all the other stuff. But if you are a hard headed jarhead like me yes almost everything on the two trucks can be swapped out.

 

[M813A1]

well the easiest thing is just get some hemett rims and put the 1400.20 tires on !! But I would recommend the 395's or a set of 1200.20 tires instead. I ran a set of the 1400.20 tires, yes I got more road speed but WOW does it loose pull power on the taller tires !! IMHO I would stay with the M817 rather then the M929 . The M817 is cheaper to fix the trans and it does not have all of the antiskid crap, and CTIS stuff like the newer M939 series. and a clutch is cheaper to replace !! Good luck !!

 

[Csm Davis]

No ctis on a 932 a1