Ford 9N 3-point problem
- Thread starter PoochyCor
- Start date
mostly_gas
Super Member
Have you checked the oil level in the trannie? Does it matter how much weight is on the 3pt when you try to raise it? Does it hold when you shut the tractor off without moving the lift lever?
Jerry/MT
Elite Member
- Joined
- Feb 2, 2008
- Messages
- 3,135
- Location
- North Idaho-The Palouse
- Tractor
- New Holland TD95D, Ford 4610 & Kubota M4500
Most failures to lift on those hydraulic systems are due to a leaking lift cylinder, a leaking supply tube from the pump to the cylinder, stuck open relief valve, a leaking pump side plate, or possibly the control valve not moving forward completely due to sticking conditions.
Pull the side plate off the right hand side and start the enegine with the pump(pto) engaged. UNDER NO CIRCUMSTANCES PLACE YOUR HAND INTO THE HYDRAULIC COMPARTMENT WITH THE ENGINE RUNNING! Place the lift lever in the full up posiotion. Using a flashlight, look up under the lift cover at the lift cylinder for a leak. Anything more than a few drops is leak. using a mirror, look at the right front corner of the hydraulic compartment. You should see a metal tube running vertically. look for fluid squirting from a crack or streaming down the pipe from a blown o-ring seal on the lift cover. Next look at the pump. Is there fluid coming outof the joint beween the main body and the side plate? (leaking side plate gasket) Is there a lot of turbulence and noise coming from the where the "H" shaped control fork goes into the fluid?(Stuck open relief valve). Finally, shut down the engine. reach down in the fluid and feel for the "T" shaped control valve stem attached to the "H" shaped control fork. Push forward on the "T" shaped stem. Then pulll back. The total motion should be near 1 inch. Now push the control stem all the way forward ( this ets the cntol valve to lift) and start the tractor with the pto engagedand the lift lever full up . Does the lift rise? If it does the control valve is sticking.
Do these checks and then get back with the results.
Soundguy
Old Timer
- Joined
- Mar 11, 2002
- Messages
- 52,238
- Location
- Central florida
- Tractor
- RK 55HC,ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC
excelent post by jerry.. saved me a whole bunch of typing too 
Soundguy
Old Timer
- Joined
- Mar 11, 2002
- Messages
- 52,238
- Location
- Central florida
- Tractor
- RK 55HC,ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC
looking forward to hearing back from you.
soundguy
soundguy
Jerry/MT
Elite Member
- Joined
- Feb 2, 2008
- Messages
- 3,135
- Location
- North Idaho-The Palouse
- Tractor
- New Holland TD95D, Ford 4610 & Kubota M4500
excelent post by jerry.. saved me a whole bunch of typing too
I think i need to go back to some old posts on these type of problems and "copy & paste"! Saves a lot of typing.
Soundguy
Old Timer
- Joined
- Mar 11, 2002
- Messages
- 52,238
- Location
- Central florida
- Tractor
- RK 55HC,ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC
i have some saved over at ytmag. the common genny/vreg questions.. or 'how do I wire up a lamp' type questions..
Bob419n
New member
I bought a 1941 9n and I rebuilt my hydraulic pump because the right side plate had broke. I bought a kit with every thing for the pump including right and left plates and new relief valve. It still will not lift any weight. If I lift the blade by hand it will stay up and only loose 2 to 3 inches in 24 hours. I have checked every thing and can not figure out why it will not lift the blade