MF 65 power steering problem

Welch333

Member
I am rebuilding my MF 65. I am getting to the power steering and the front wheels is turned all the way to the left. Looking at the Manuel it says I need to use "A" type trasnmisson fluid in the power steering system. I used the same hydrulic fluid that I used in the trasnmisson and hydrulic lift, Permatran 821XL. Can I or can i not use the Permatran 821XL in the power steering. All my hydrulic hoses is connected right. But I did take everything apart. I guess I have adjust the adjusting pin to get the steering back the other. Any in put would be helpful.
 
Either oil is OK. Sounds like the control valve link needs adjusted to get it centered. The link ends and pins are critical for the cylinder/valve assembly to work right. Worn parts cause lost motion, keeping the control valve spool to turn oil on to cylinder both left and right. Try removing a link pin to valve, then turn down completely the tapered screw, then adjust the link so the pin will go in. Now back out the tapered screw about 7 turns, this should get you close enough to finish fine tuning the spool valve link.
 
Not sure any one person has all the answers, especially me! That's where others are good at helping too. I'm just pulling from memory my years at the MF dealer, and years of diesel injection repair which I'm still into. Of course it helps Dad and brother still have mostly MF on the farm..
 
Will let me ask you this? What make diesel tractors smoke the whole time while running. I have had this tractor's motor rebuilded for the top to the bottom. I did find a pin hole in one of the fuel lines. And I had a very slow leak on the fuel line going to the cold start heater. I have one injector that is leaking fuel around the top cap. I have order new injector bottoms hopeing that helps. The tractor runs ok. I can hear a little miss. But it have good throttle response. It just has white smoke coming out of the tail pipe the whole time while running. What would be your thoughts on that?
 
Which engine do you have, the early regular diesel or the late direct injected diesel? White smoke is caused by low compression, or late pump timing. If the valves and head seats are ground too far that can drop compression enough to cause trouble, even with starting. Diesels need compression heat to help keep smoke at bay.
 
My is 1960 MF 65. It has the AD203 Perkins. It is not direct inject. The injectors are straight up and down. So I can do a compression test on each piston. But what should the compression number on that. But you don't think things like the pin hole in the fuel line has anything to do with the smoke. Sucking air does not mess with diesel like it does with gas engines?
 
If your injectors are straight it's the A4.203 engine, those have lower compression than the AD4.203. On a compression gauge I'd think it should be at least 350 to 400 PSI. I'd try advancing the timing first to see if it helps, if I remember that engine had the light load advance pump, not fixed phase like most other Perkins have. The advance is fully retarded at full load, 1/2 advance at 1/2 load, and full advance at low or high idle with no load. If it stays fully retarded at all times that will make white smoke worse too. If timing changes don't help any then I'd suspect low compression. The light load advance is best set on the pump test bench, but I've set many on the tractor while running on a PTO dyno to check under load.
 
Yes, just like a distributor on a gas engine. Move the housing against rotation to advance, with rotation to retard. There should be an arrow on the tag which way the pump drive turns but they are not always visible.
 
Dieseltech, I got around to removing the head on my tractor to check if I could see anything that might make a compression problem. If you can remember. I couldn't get my tractor to stop smoking white smoke. You said you think it might be a compression problem. So when I removed the head. I did see some blow by on the two middle pistons. Then I just want to turn the engine over to see if everything move freely. I hit the starter and the number to piston sleeve came up. My question is there anything I can do to get the piston sleeve to lock down or can I just push it back down and the head will hold it down. Or I need to get another sleeve and replace that one. Everything is new. A motor shop doc my engine work. I hate to have to go back into the engine? I wish I could talk to you on the phone. I don't know if that is asking to much or no. My email is [email protected] if you want to send you number. If not all the info about my problem would help.
 

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