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Hello,
I am having a problem with a Massey 35 4cyl. When I bought it I was told that the Hydraulic pump had been totally reconditioned, however the lift didnt work. I removed the lift cover and found that the hydraulic cylinder was cracked. I replaced it and the piston. I started the tractor with the lift cover off and moved the control valve by hand, the pump seemed to be working ok and pumped oil out the outlet hole of the pump. I replaced the lift cover.
When I started the tractor the lift raised to the top and went into `constant pumping`. I removed the side plate on the right hand side ath the dipstick. When you move the lift lever it seems to be working ok but in the wrong direction. The lever pushes the control valve lever back, when you raise it. This seems to be the wrong way. When I move it by band, back, seems to be to lower the lift rather than raise it. Could the wrong control valve have been fitted? Which way is the control valve lever supposed to move to raise the lift arms? Any help you can provide me with would be gratefully appreciated.
Richard Trench.
Hi Richard,
When you look through the side cover you can see the control valve actuating lever fixed to the pump (the vertical lever with the rollers on either end). That is operated by the two levers that come down from the top cover. The two levers should be in front of the control valve actuating lever, so when you have lowered the top cover into position you will have needed to have held the control valve actuating lever backwards towards the rear of the tractor so that the levers would locate to the correct side of the control valve actuating lever.
If the levers are in the correct place then possibly the control valve has been assembled and fitted incorrectly.
Also we have found that it is always advisable to use a genuine Massey Ferguson control valve, the other brands of valve that we have fitted have not been manufactured accurately enough (it is an extremely precision component).
The control valve should move forwards towards to raise the lift (i.e. the top of the control valve actuating lever should move backwards).
Let us know how you get on with the above suggestions.
Regards,
Steve Ridsdale
Hi James,
By the description of the symptoms, your tractor must have a single clutch. This means that when you depress the clutch pedal that the drive stops to the hydraulic pump.
The three point linkage should stay up when you depress the clutch pedal. It will be a leak in the system that is letting the linkage fall down. The leak could be coming from one of several places in the system. It could be the lift cylinder itself, the pathway from the pump to the lift cylinder (e.g. an o’ring on the stand pipe – if it has a stand pipe, I’m not familiar with the MF30), or it could be a leak in the pump itself (control valve or side chambers).
You could remove the side cover plate to take a look inside to see if you can see a leak anywhere. Obviously don’t put your hands inside if the engine is running. Otherwise, you could start with simple things such as o’rings on the stand pipe.
Otherwise you will need to remove the top cover and dissmantle the system. Look at everything with a critical eye and remember that the control valve is a very precision component and the slightest scoring or wear can cause a leak.
Steve (VTE)
To whom it may concern, i have a mf 30, i bought your dvd to learn the hydraulic system, However my ganon on my three point only stay up when you are moving in forward or reverse as soon as you stop it go to the ground. You put in neutral and rev the engine it go back up again, the three point seem to raise and lower at the proper speed could you help troubleshoot James w Butcher
I HAVE A MF TO30 AND THE PROBLEM IS WHEN YOU START THE TRACTOR THE LIFT ARMS RAISE AND WONT GO BACK DOWN UNTIL THE TRACTOR IS SHUT OFF.
I have a problem with the lift pump on Ferguson 35. Why I raise the lift with the transport box empty it seems ok but when I put weight in transport box the lift pump makes a knocking sound. The more weight the worse the noise gets.
Anybody know what might be the problem. Your help would be grateful appreciated.
why lifts wont go down