Air operated PTO

[jimbo66348]

Air operated PTO for 900 series.

 

[74M35A2]

Any on-vehicle pics?

 

[jimbo66348]

I will take some after I mount the PTO. I have to rid the truck of the spare tire mount, and crane first.

 

[kubotaman]

Original spec? What truck was it originally used on?

 

[jimbo66348]

The pto is one I bought to install on my 923. It is a nose one for the 900 series. I didn't want to use a cable, so I fabricated the pneumatic actuation system.

 

[tobyS]

You may have a frame interference issue. Top of the PTO on the 939 series is really close to the frame.

Is the cylinder spring loaded to go off?

 

[jimbo66348]

Yes it is, spring return. The uppermost portion of my setup, is about 3/4-7/8 higher than the actuation lever. The factory setup, is about 3/8-1/2 higher than actuation lever. I'm thinking that it will fit. If not, I will redesign it.

 

[simp5782]

You can add a air operated pto. A member here in Kansas city has one on his M923A2 to run his roll off system

 

[kubotaman]

Wes, anymore photos of that truck? Looks like a nice setup

 

[jimbo66348]

Well, I got my PTO installed, today. HOLY MOLEY! This job was a son of a bitch. 4.5 hours to install. This is probably the hardest job that I've done in many years. The PTO certainly wasn't meant to be installed after the transmission was installed in the vehicle.

I will have to make a new actuator mount, as there is an ear on the tranny that interferes with what I have made. Other than that, it looks good.

 

[simp5782]

Well, I got my PTO installed, today. HOLY MOLEY! This job was a son of a bitch. 4.5 hours to install. This is probably the hardest job that I've done in many years. The PTO certainly wasn't meant to be installed after the transmission was installed in the vehicle.

I will have to make a new actuator mount, as there is an ear on the tranny that interferes with what I have made. Other than that, it looks good.

For future reference if you dont want to kill yourself installing a PTO
Remove the engine bellhousing bolts that hook to the frame. And hook a ratchet strap around the rear transmission tail shaft and to the drivers frame rail and tighten it. Will give you an extra inch or so. It's not much but it's just enough to make it alot easier

 

[jimbo66348]

I was thinking that, but reasoned, with proper designing, you shouldn't have to. I was wrong. I pounded some wooden wedges between the tranny and frame, but that didn't yield much.

 

[jimbo66348]

Here is the new cylinder mount, along with the old one. This will miss the ear that sticks out of the side of the transmission. The new one is gloss black.

 

[IridiumRed]

Wes, anymore photos of that truck? Looks like a nice setup

+1

I'd love to hear more info on that truck, I've got some business interests where I've thought of getting a military truck and adding a roll off / hook lift system on it (I work for a local garbage business.... and we're 100 miles north of KC, so there is no competitive overlap with that guy... just for sake of disclosure

 

[simp5782]

+1

I'd love to hear more info on that truck, I've got some business interests where I've thought of getting a military truck and adding a roll off / hook lift system on it (I work for a local garbage business.... and we're 100 miles north of KC, so there is no competitive overlap with that guy... just for sake of disclosure

I forwarded this thread to the owner of the truck. He said he would get some pictures of it. I will bump him again

 

[jimbo66348]

Here are the pics of the actuator mounted. The heat shield has yet to be installed.

 

[jimbo66348]

 

[patracy]

I really like this setup. Do you have any more info on the cylinder? Have a drawing for the plate? My PTO is already installed so it's not that easy to get measurements. But my cable is broken and I have to do mine by hand, which sucks. I'd even go as far as asking if I could buy one!

 

[jimbo66348]

The plate with the notch, is the one I used. The notch isn't necessary. It just clears the ear on the tranny. The distance from the mounting bolts to the pivot pin is 2" c to c. The pivot is 1/2. The cylinder mount is 1.250 x 1.250 x .125 angle. The cylinder is .750 x 2.5 stroke, spring extend, retracts with air. The rod end is 1/4-28. I had to make a .250 x .312 bushing for the actuator lever, as the hole is .312. I will send a link to the cylinder from eBay.

 

[jimbo66348]

The best I can do.