M35a2 Transfer case pto

pappy59 · Apr 28, 2012

I'm looking to run a large (30 gpm or larger) hydraulic pump off of a rear facing transfer case pto on one of our M35A2 brush trucks. What type of coupler can be attached to the output shaft of the pto? I don't have the pto yet.

ODdave · Apr 28, 2012

4 bolt flange. It is the same flange pattern that is on the front winch driveshaft. I used a driveshaft from an old jeep. Uses a 1310 u-joint

pappy59 · Apr 28, 2012

Thanks for the quick reply, i suspected a u joint flange but wanted to make sure.

NDT · Apr 28, 2012

Make sure the PTO you buy has the flange. Otherwise there is a tapered shaft with keyway and threaded end, and the flange will be very hard to find.

pappy59 · Apr 28, 2012

Would the transmission pto for an older AM General have the same tapered flange? And by the way thanks for the reply.

gringeltaube · Apr 28, 2012

pappy59 said:
Would the transmission pto for an older AM General have the same tapered flange?...

Nope! That one has a cylindrical bore, 1-1/4".

G.

pappy59 · Apr 28, 2012

Thanks guys, you have me on the right road.

Speddmon · Apr 29, 2012

Pappy,

I'm going to move this thread to the appropriate location (the deuce forum). You'll find you will get much better exposure and probably more concise answers if you look for and place your posts in a better location

pappy59 · Apr 29, 2012

Need all the help i can get.

jake1086 · Sep 12, 2012

Hi, first post here. I am looking at an m109 and was wondering (anyone can answer this I assume) what are the pinions on the axles used for front and back? and how can you use them? Do you have to be moving the truck to use them or have it in neutral or have your diffs unlocked? so many questions haha.

Dont mean to jack this thread just thought this was a good spot to add to it.

P.S. really excited to be part of your community :jumpin:

spicergear · Sep 12, 2012

The nut is a fairly uncommon thread as well; something like 1"-20 or something like that. I couldn't buy one at any of the fastener houses so bought one with smaller threads, cut them out then recut the threads I need on my lathe. Yes, tapered shaft for the output too.

You should be able to drive whatever you feel like off of that, it's very beefy and is a straight thru-drive on the upper out of the T-case. I'm driving I think a 25gpm pump with no sweat. T-case neutral, trans in 4th, prolly around 1400-1500rpm.

jake1086 · Sep 13, 2012

(watching responses I realize I am not intelligent

) I don't believe my T-case has a PTO out, am I mistaken?

Again not trying to hijack the thread if anyone wants me to I'll start my own thread.

spicergear · Sep 13, 2012

Both front and rear driveshafts come off of the lower drop of the transfer case. The input from the transmission drive in the upper input of the T-case. Straight through from that is a heavy cap that will be removed to install the PTO. The beauty of these PTO is you can put the t-case in neutral then drive the PTO at whatever speed you want using the transmission gears.

gringeltaube · Sep 13, 2012

The nut is a fairly uncommon thread as well; something like 1"-20 or something like that........

Thread: Yes, 1"-20 tpi.
Uncommon....? depends where you look: every M35 has 11 of those nuts... (or 12.... if it was a M48; M49; M50; M108; M185; V18A; etc.).......... :smile:

G.

jake1086 · Sep 13, 2012

spicergear said:
Both front and rear driveshafts come off of the lower drop of the transfer case. The input from the transmission drive in the upper input of the T-case. Straight through from that is a heavy cap that will be removed to install the PTO. The beauty of these PTO is you can put the t-case in neutral then drive the PTO at whatever speed you want using the transmission gears.

ah ha! so do you have any info on a place who would sell the PTO shaft and hydro pump as a kit?

Thank you.

m16ty · Sep 13, 2012

I may be mistaken but I think Jake is talking about the axle drive flange. No you cannot drive a hyd pump off of the axle flange. Well, I guess you could but it would only pump while moving and speed would be dependent on ground speed. The front tandem axle and the rear axle are the exact same (and so is the "chunk" in the front axle. The front tandem needs the flanges on both ends to send power to the rear axle. On the front and the rear axle it just sits there and spins. In other words, it serves no purpose.

jake1086 · Sep 13, 2012

ya I cant believe there arent any attatcments someone has come up with for the front and rear pinion. (I'm thinking like... a rotary snowblower geared way up so you move a little and the snow blower turns way more than it should need to move alot of snow.....

Just had an idea!!! mower!!!

m16ty · Sep 13, 2012

Another problem with driving something off the axle drive flange is axle articulation. The axles move quite a bit and it would be hard to attach a driveline without binding.

jake1086 · Sep 14, 2012

slip yoke just like a driveshaft no? on either end, the truck or the implement.

m16ty · Sep 14, 2012

The front wouldn't be too bad but the rear axle articulates a bunch. I wouldn't be worried about the slip yokes as much as I would excessive u-joint angles. I'm not saying it couldn't be done but it's going to take some figuring.

M35a2 Transfer case pto

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