Ford 455c clutch issues

[ptbrophy]

I am working on a 455c backhoe.
We started to have a clutch issue several months ago, and it has got to the "no go stage" .
We split the tractor and upon inspection of the clutches we were very surprised to find little wear on the clutch disc's and the plate's that go between them.We plan on replacing them.
We plan on replacing the torque converter since we are in there. There does not appear to be much wear on any of the gears etc inside, however there did appear to be some water in the oil.
When we drained the oil we got 11 gallons of clear oil,almost blue.
Yet when we took off any of the hydraulic hoses and the filter it had a milky look to it.Not good.I have no idea where the water is getting into the system.
Any ideas regarding the clutch or the water issue?

Patrick

 

[juniur]

So its not moving in forward or reverse? Did you
pressure test before splitting it?

 

[ptbrophy]

(quoted from post at 02:02:01 05/05/21) So its not moving in forward or reverse? Did you
pressure test before splitting it?

No,we were not aware of such a thing until we started to remove the insides of the case. We are now aware of where to do so,but not how.
The only thing missing is the shade tree.

 

[ptbrophy]

Does the clutch operate off of the hydraulic pump,or is there some sort of a pump within the clutch pack unit ?

 

[ptbrophy]

It does not move in either forward or reverse. We where not aware we could pressure test it.

 

[Sean in PA]

(quoted from post at 08:36:30 05/05/21)
Does the clutch operate off of the hydraulic pump,or is there some sort of a pump within the clutch pack unit ?

Yes, the pump behind the torque converter is used to power the clutch packs for forward and reverse. If everything in the clutch packs looks good and it's not operating in forward or reverse then the pump pressure is the first thing I would check. Next would be the control linkage from the forward/reverse handle to the control valve and then the valve itself.

 

[ptbrophy]

The shift is electric .We did inspect the solenoid control valve, it looked fine. It was free of rust and dirt etc, all the passages appeared open.

 

[Sean in PA]

(quoted from post at 11:31:21 05/05/21) The shift is electric .We did inspect the solenoid control valve, it looked fine. It was free of rust and dirt etc, all the passages appeared open.

That's newer than the mechanically controlled reverser valves that I've seen. I didn't know that they switched them to electrically controlled.

 

[UPFord]

Two separate oil compartments here. The transmission system, which had clear oil, consists of the oil in the transmission case, charge pump, converter and in hard lines to the transmission oil cooler by the radiator. If you found milky, water contaminated oil in the hoses for the backhoe and loader, that is oil from a separate system with a big pump and reservoir at the front of the tractor.

First thing to check on C and D Models with the electric FNR shifter box, are the connecting wires that run from the box into the trans, bad connections can cause failures to propel. There is also a neutral safety switch that must give proper signal. The shifter box can be tested for proper electrical outputs per the factory manual. I have seen all three of these items cause a failure to propel that was repairable without splitting the tractor.

The electrical shifter controls solenoid valves inside the transmission case. These can be inspected per service manual when case is open.