John Deere 401C Hydro trouble

[Bid1]

I recently got a 401C industrial tractor it has front loader 3poit hitch live pto and shuttle shift unsure of year but serial # tag is 401cd. Ran fine for a few days moved about 60 tons of dirt before it started to shutter and lift slow. I have read on here that it has a sump screen I can not seem to locate it. do they all have this ? Have replaced both filters and didn't change operation. any help would be grate. Cant seem to locate anyone here that knows anything about the rig.

 

[Tx Jim]

Here ya go parts key # 22 is the screen but I think on an industrial tractor one needs to remove a fitting & hose to access the screen.

 

[Bid1]

Thanks I will look again tomorrow. Is their anything else that would cause tis problem?

 

[Tx Jim]

Several things can cause hyd failure including internal leaks & debris stuck in stroke-control valve among other things. Pump Coupler drive could be slipping on pump shaft.

 

[medic0648]

The screen is under the tractor behind the filter housing, but in front of the priority valve. Should be accessible on the right side of the tractor. You need to drain the sump BEFORE attempting to pull the screen. It should have a spot for a 1/2in ratchet to remove the cover. Also a good time to replace the main filter element while you're down there.

 

[Kaliburz]

The screen is under the tractor behind the filter housing, but in front of the priority valve. Should be accessible on the right side of the tractor. You need to drain the sump BEFORE attempting to pull the screen. It should have a spot for a 1/2in ratchet to remove the cover. Also a good time to replace the main filter element while you're down there.

And there is anywhere between 5-10 gallons of oil in there......

Silly question...how much hydraulic oil do you have? Deere's are really picky, has to have oil at least up in the hash mark and is check while at idle- not when off. IF you check the oil while off and is to the "full" mark on the stick, I can bet that once you start it, it will go down to the low mark (mine does). And if you are at the low mark when off....well, you don't have enough oil.... It uses hydraulic/transmission oil; the Deere brand is pricey, but GOOD. You can pick it up at Costco (if you have a local Costco wearhouse store) as they sell it in 5 gallon buckets.

Has the power steering been affected also or just the loader? I ask since the hydraulic system gives (at least on ag tractors) priority oil flow to brakes & power steering. Your tractor has a closed center hydraulic system, with, a direct drive/coupled pump in the front.

You stated there were two filters you changed? Umm, if I recall right, one filter should be under the tractor (cartridge type). Second one, well, I have no idea (as I only deal w/ Deere ag tractors.....). Was this other filter a spin on type?

The Ag tractor model that would be comprible would be a JD 2030 or 2440 (rated at 60HP at the PTO), both 4 cylinder engines. Hydraulic system virtually identical. An ag shop should be able to work/help you with it.

 

[Zebrafive]

If it's comparable to a JD2030 AG tractor capacity is 10 gallons. An industrial may take more. PS does have priority, brake's reservoir fill from the trans pump, not the main pump. Checking level with the tractor running is correct.

 

[Bid1]

there is two filters under the tractor one is vertical and the other is horizontal. they are both canister type filters

 

[Bid1]

still cant locate the sump screen we even pulled the priority valve off to make sure it was not behind it nothing their will try to take some picks of it

 

[Tx Jim]

Remove cap(parts key #1) to access screen. Sometimes there's a fitting with a hose in place of the cap.