new skid owner

[old skool iron]

I bought a 94 new holland. l 785 problem is the curl only works well when the bucket is being lifted up. I cleaned the main screen no help, the curl is good as long as the bucket is going up or down. I would like to fix the problem my self. any advice would be greatly appreciated. Thank you a million.

 

[Dutchofsc]

Sorry to resurrect an old thread, but I'm having the same problem with my nh l785. Did you get yours fixed? Does anyone here have any input?

 

[old skool iron]

old thread

Sorry to resurrect an old thread, but I'm having the same problem with my nh l785. Did you get yours fixed? Does anyone here have any input?

:bash- Yes I fixed the problem . It is the loader control valve , located on the floor under your left foot. Very easy to replace. I bought a used one for $ 425.00.New was like $ 1200.00 .I got it from a place that sells used loader parts in Texas . When I get back to the shop I will try to find the number , and get it to you .There is a hair line crack inside the valve which causes the problem we share ( Shared ).

 

[Dutchofsc]

Not what I wanted to hear, but good to know. That valve new is just over 2k. Ouch.

I was hoping it was something simple. I have removed the valve before, cleaned it out, put back together but the problem persisted.

Where is the crack? Can it be seen?

Thanks for the quick reply.

 

[old skool iron]

The crack is on the inside between the two valve halves causing a bleed through . My used valve is still doing well . Try Conroe Truck & Tractor 1-800-859-7209

 

[Dutchofsc]

Thanks a bunch. I'll give them a call next week.

I was hoping to be able to fix the valve, but after looking at it some more, I don't see a way how.

Do you still have your 785? Any thing I should be looking for?

 

[Dutchofsc]

Here's another one for ya. After a while of driving around just fine, the controls get heavy, the pumps start to make a lot of noise, chetter sounds, and the machine will not drive. I immediately shut it down of course. After it sits for a little while, I will start it up again and it works fine, sometimes for for a few minutes, sometimes for a half hour.

Could it be a partial cavitation?
Maybe the 100 psi return regulator?
Wrong fluid?

The fluid and filters are new.

 

[Dutchofsc]

Another clue, the drive issue only happens when the machine is hot, and the charge light comes on, faintly.

 

[Dutchofsc]

I replaced the control valve today. Nothing changed, the same exact problem persists. I'm lost, any advice? Anyone?

 

[Desertwheeler]

Bad cylinders maybe??

 

[Dutchofsc]

Update, I have replaced the valve and rebuild the cylinders, the problem persists. The same exact symptoms, to the tee. I decided to throw in the towel and just use the machine as is. The only issue was that I had a small leak from the fitting leading to the auxilary's. I couldn't get it to quit leaking, I didn't have an o ring to replace the leaking one and I didn't need the auxilary hydraulics to work. I decided to remove the line and fitting all together, and replace the fitting with a plug that came on the new valve. PROBLEM SOLVED! The boom and bucket work as they should.

I don't know how the auxilary connections had any way of making the bucket no curl, but that's what it took.

Does anyone know why there is a quick connect from the valve to the auxilary? I would just use another hard line if I designed it.