IH 3600 hydro trans? ( like 656 Farm )

[IH 3500A]

Looked at a IH 3600 backhoe with a hydrostatic trans today, machine goes forward but no reverse. If the rear wheels are off the ground, they will jerk when the reverse peddle is pressed but will not rotate. There are a couple of unknown levers, owner says one might be for high / low range, other is for ? Is this really a hydrostatic or a shuttle shift and the owner calls it a hydro?

The hydro trans in this tractor is much different then the one in my 3500, anyone have any info or a internal picture? Supposedly this is the same trans as the 656 Hydro farm tractor.

Tractor is pretty ragged looking and a 1/2 step away from being left under a tree for 20 years then being hauled off for scrap. A swing cyl leaks, glow plugs are operated with a battery clip hanging from the dash, motor runs but smokes badly cold. Filters have long faded printing. They are asking $ 2500, I'd offer $ 1500 as there has to be enough room to repair and resell.

[OneWelder]

Has a 282 and they do smoke when cold or under load - also takes a lot of heat to start. - these are not hydro shuttle - but hydrostatic and I am told can be quite expensive to repair- should be a high low lever on left side of dash - left two pedals are forward and reverse- right side pedals are l-r brakes rear left pedal unloads hydraulics and is safety switch for starting upper lever to left of seat holds trans at set speed when you engage pedal ( more you push pedal faster you go )- right side of seat is throttle lever

[Phil]

Even for $1500 I would be very hesitant to buy it, unless you wanted it for a parts machine or loved the International hoe. These machines are very rare, making used parts to fix it up extremely hard to find also. Phil

[pvdh286]

I just purchased a 2500 hydro, the only problem I have its very,very noisy, the local shop said it would be $6000 to find the problem, I would find a different hoe. Pete

[IH 3500A]

One Welder, thanks for the lever ID. There was a ball on a rod under the right of the dash, any idea what that is?

In my searching, I've found the 656 farm tractor had problems with a range selector linkage coming loose, then causing loss of drive in one or both directions. Could this be what you call

"upper lever to left of seat holds trans at set speed when you engage pedal ( more you push pedal faster you go )"


Phill, yep 1,500 is probably still to high. If this had the same trans as my 3500 I wouldn't be too concerned. I've researched the 3500 pretty heavily and am confident in what makes it tick.

Being the 3600 goes forward, it rules out the charge pump, main pump and drive motor. It is very likely it's a control or servo problem. The question is if the repair can be done without splitting the tractor. If the tractor was in better shape I'd split the tractor, but this machine needs cyl repairs, badly needs paint, has bent steps and generally looks unloved.

In it's current state the 3600 is a retired guys machine. You know, a machine that sort of runs and is used to move non vital dirt with no time constraints. Pop a hose and can't keep working? No problem, gives one a excuse to go into town, chase Mabel around the diner then stop at the tractor parts store and sweet talk Lu-Ann.

[IH 3500A]

pvdh286 , your 2500 has the same trans as my 3500. There is a filter for the hydrostat trans on the left side of the trans under a cast iron cover, it is possible that is clogged.

Go here http://www.heavyequipmentforums.com/...d.php?p=176470 see the first pic in post 47 ( Phill ) for a overall view. I've croped a section and added text to show the filter location.

The check valve bolt must be removed before taking the cover off otherwise the trans will drain. ( ~ 15 gallons of fluid )

On farm tractors the steering pump also runs the 3 point hitch rather than the hoe swing. Farm tractors also have a filter under the dome where as the 3500 loader/ hoe has no filter there and uses the main hyd canister filter on the tractor right side.

If someone used AW 46 hydraulic oil, the pump will cavitate causing noise. Cavatation is where the fluid is pullled apart causing voids of vacuum then the voids collapse. The action is very hard on parts and will cause damege long term. I'm using water thin JT-5 from Mystic @ $ 60 per 5 gallon pail from Tractor Supply ( it is made by a name oil co, Citgo or Chevron I think )

If all of this is in shape, the trans is wearing out. Mine makes a bit of noise when starting to move under a quick start but is otherwise quiet.

[OneWelder]

One Welder, thanks for the lever ID. There was a ball on a rod under the right of the dash, any idea what that is?- Parking brake only works on one pedal unless they are locked together

In my searching, I've found the 656 farm tractor had problems with a range selector linkage coming loose, then causing loss of drive in one or both directions. Could this be what you call

"upper lever to left of seat holds trans at set speed when you engage pedal ( more you push pedal faster you go )" - NO , you would want lever on left side of dash linkage goes over than down center of inside firewall to connect to trans in center ft between four pedals - wiggle the lever you should see a Small ball joint connection

[OneWelder]

On the right side of the trans near the ft there is a filter- take cannister off and cut filter apart if there is any metal it is a problem there is also one on left side of firewall - but lower filter shows the metal first - this trans holds a lot of oil - maybe 35 gals