Oil & Fuel GC1715 Blowing hydraulic fluid

[Coyote1]

Changed the fluid and filter in my GC1715 tractor and now it blows fluid out the cap. I don't think it is over filled sitting in the garage with motor off oil isn't showing in the glass. I mowed with the tractor last week for three hours and it worked great. This week mowed 1.5 hours it blowed fluid out cap. I am wondering if dealer sold me the wrong filter the one he sold me was about 1 inch shorter.

 

[seville009]

If the filter was wrong, you probably would have noticed it right away. If it only started after 4.5 hours of use, probably something happened.

Is it foaming out the cap, or is it straight fluid?

Any fluid coming out at the filter (ie:did the filter come loose? Did you install the gasket with the filter? The old gasket stuck on too?)

 

[Coyote1]

Fluid, only coming out cap.

 

[WranglerX]

Probably over full..... IF you can not "see" level in glass, maybe it is above the glass.....

 

[Coyote1]

No I start tractor an it comes up in glass when I lift the mowing deck.

 

[DMW]

Assuming the Hydro oil used was the correct spec, try taking a look at the oil fill tube plug. It also acts as a breather valve preventing pressure build up in the transmission. It will come out there if over pressured. It is only a plastic plug, do not tighten it like its a nut/bolt.

 

[DMW]

Forgot to add it's pretty important for the breather valve be working. Too much pressure and the hydro fluid level sight gauge can for blown out. It's only a press fit. They eventually added a washer that covered part of the sight glass to keep it in place. Driving up slopes will magnify the problem.

 

[WranglerX]

Assuming the Hydro oil used was the correct spec, try taking a look at the oil fill tube plug. It also acts as a breather valve preventing pressure build up in the transmission. It will come out there if over pressured. It is only a plastic plug, do not tighten it like its a nut/bolt.View attachment 751728

Odd you should mention that , my 1715 does not have the above mentioned breather on fill tube...

 

[DMW]

Odd you should mention that , my 1715 does not have the above mentioned breather on fill tube...

This is a picture of the underside of the plug. More than just a stopper. Quality is a lot lower than the plugs from previous GC models.

 

[WranglerX]

This is a picture of the underside of the plug. More than just a stopper. Quality is a lot lower than the plugs from previous GC models.View attachment 751971

Never mind, misinterpreted a previous picture... Guess my comprehension skills are fading with age...

 

[DMW]

Never mind, misinterpreted a previous picture... Guess my comprehension skills are fading with age...

Things have change from the early models. The GC2300/2400 had a breather tube on the hydro as well. I can not find it on any diagragms for it the GC1705/1723. The plug for the hydro fill was the same style as the fill plug on the front axle. The GC1705 was the first model that i know of that had problems with oil coming out of the plug, or blowing out the sight level gauge. The tube extension (#19 pipe coupler) in the picture may be for the backhoe equipped models.

 

[Coyote1]

Saw it coming out today fluid loaming out around plug I'm going to go to another MF dealer and get another filter I think the one close to me sold me the wrong one and it is causing this somehow. My sight glass leaked the first year I had tractor. I replaced it with a new one with JB weld has worked great till I changed fluid and filter. I measured out fluid when I refilled it and when I put the last in I could see it in glass . It has blowed it out so much now I can't see it in glass I quit refilling thought when it reached full level it would quit now I don't think so.

 

[Coyote1]

Looked at filter again I think it has the right one # on filter 6258877m91 so thinking waste of time to change

 

[seville009]

Based on a Google search, it looks like that filter has a rubber gasket.

If that is correct, did you install the gasket when you put in the new filter? Did you make sure the old gasket was not still in there (so you don't have two gaskets)?

 

[Coyote1]

yes. Besides that isn't where the fluid is coming out .

 

[DMW]

Oil & Fuel - Gear Case Vents on MF GC1720?

I Just purchased a new 2018 GC1720. So far the tractor has performed flawlessly. I have about 10 hrs on the tach and decided I should look the tractor over for any issues. When I removed the fill cap for the transmission I was surprised to hear a good bit of pressure escape from the filler neck...

www.tractorbynet.com

 

[DMW]

Last post in the thread

Help! GC1705 Hydraulics out

I disagree. My fill cap is super tight. I would guess 20lbs of pressure to get it out. It is probably different for each of us. LOL, Definitely different! Mines tight but not that tight but still, the sight glass "should" be secured well enough to withstand more pressure than the fill cap IMO.

www.tractorbynet.com

 

[Smokeydog]

Checking the filter and gaskets is for air inleakage when running. Air sucked in on the suction side of the pump will foam the hydraulic air and push it out the vent. Had similar event when cracks formed on a rubber elbow on the suction line on my Kubota B26. Would not drip fluid.

Foaming fluid check all lines and filters on the suction side.

 

[DMW]

If the hydro fluid is foaming, it should have a milky appearance in the sight glass during/after use.

 

[Coyote1]

Where would the suction side be on a tractor like this