Ford 1710 three point will not raise

hawkone115 · Feb 18, 2014

Greetings folks,

Hope I posted my issue in the correct forum. I own a 4x4 Ford 1710 tractor. UL06201 Unit #4J13B. I have never has any issues with any part of the tractor (except water pump) until now. The tractor has 1100 hrs. on it. For the first time last week I could not get the three point to raise. I notice I was low on hydraulic fluid so I put in about 1 gallon. I changed all hydraulic fluid today including front axle. No luck as the rear three point will not raise. I can raise it by hand lifting and it moves rather freely. The front loader works great with no problems.

I bought a county line brush hog from tractor supply about two years ago. I did noticed that when I raise the brush hog if I had it raised high the hydraulic hoses to the front loader would tend to pulsate, my usual reaction was to just lower three point a little until the hoses stopped pulsating.

Since I started with the fluid change I am now seeking advice for the next step.

The fluid had not been changed in a few years, and was a little discolored but not bad. The hydraulic filter was also changed (NAPA 1736).

Thanks
Ted

Hooked_on_HP · Feb 18, 2014

I am guessing that your seal on the lift piston is shot. here is a post by JC with plenty of pics on how to fix it http://www.tractorbynet.com/forums/new-holland-owning-operating/90819-my-f-1700-testing-my.html

hawkone115 · Feb 19, 2014

Thanks Hooked_on_HP,

I took the piston out and discovered the crumbling piston seal. I replaced it at the NH dealer. Placed it back in and nothing is happening. I have turned the dial in both directions for fast and slow loading. Made a 60 mile trip today to get the seal, kind of disappointed but not giving up yet...BTW this tractor has power steering (works great) FEL (works great). I rechecked the old thread mentioned, to make sure the dealer installed the piston seal correctly (uchannel faces up towards piston head so it can flare out under pressure. I did start tractor again because I was so disappointed. I removed nut (where I saw on the previous thread where the pressure gauge is connected to) little to no oil coming out, had a little air pressure release when I unscrewed it. I also remove the nut opposite with locking nut attached. I started tractor and no fluid? I have re-read the thread a few times, but am ponder what to do next? Do I need to bleed the system to get the pressure back to the rear tph cylinder

JC-jetro · Feb 19, 2014

Ted,

It is good that you changed the seal. Bad seal is a "no go" however you look at it. You need to concentrate to see if you have flow. Flow can be negatively impacted by suction blockage (filter, screen and such) or bad pump (weak and tired pump). I think in that thread linked above by Bill I went over overhauling my pump. Not saying that your pump is bad but need to test it out. If you take the pipe off at the relief device and put a bucket underneath might be able to at least see flow or no flow. You do have a hyd suction filter? right?

JC,

ps. You probably would have gotten more hits posting in NH Owning and Operating forum than general parts and repair.

hawkone115 · Feb 19, 2014

Hello JC,
My filter is located on the left side foot plate (Napa 1736) I just changed it out yesterday. I have no idea where the pressure relief pipe is. If you could describe Or I can take a few pictures if that helps?

hawkone115 · Feb 19, 2014

p.s. still learning the site, thanks jetro

JC-jetro · Feb 19, 2014

Ted,

I'd follow the smaller dia pipe from the pump to the hyd block or relief device. Need to see where you can loosen the pipe without causing damage. You want a pipe that is open on the discharge of the pump and may be use a hose and a clamp to direct the flow safely in to a bucket. Pump will have some flow but not the normal pressure as gear type pump can build pressure against the relief pressure spring setting. It is raining in KC now and is getting dark so probably needs to be checked tomorrow.

JC,

sixdogs · Feb 19, 2014

Does your tractor have a hydraulic suction screen? It would be under a round cover on the side of the trans. It has three bolts and a tube that comes out of it.