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Massy Harris 50

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Robert

12-30-2001 09:15:20

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My Massy tractror has just stopped while I was running the snow blower. The engine seems to be seized I tried to move the flywheel with a big wrench but could not. Someone said that this dose happen to these tractors every so often. Any coments

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Leo

01-03-2002 05:13:05

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Re: Massy Harris 50 in reply to Robert , 12-30-2001 09:15:20

It sounds like Everyone who has a MH 50 should take a look at their Oil Pump every once in a while and if someone has a way to permanently fix this screw from coming out, let everyone else know. I have a Big Block 454 Chevy engine in my truck. When I was rebuilding it, I found out that there was a possibility of the Oil Pickup Tube coming back out of the pump, it was pressed in. I was told by several people that while I was rebuilding it that before putting it back together, to align the Oil Pickup, and have it welded to the bottom of the pump to prevent this problem. Maybe someone has a similar fix for this problem???

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B.C.

01-03-2002 13:47:26

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Re: Re: Massy Harris 50 in reply to Leo, 01-03-2002 05:13:05

One is wise in general to tack weld the oil pickup tube to the oil pump. You don't need a lot and you don't want to excessively heat the pump housing. That's for many brands of engines, not just Chevs.

Another thing that's good to do on Chevs is to get a pump driveshaft with a steel collar rather than that crappy plastic retainer the stock ones have. They can fail after some time. GM and the aftermarket both sell steel ones for a few bucks.

Think about the next time you look at the pricetag on either a K2500 or Suburban.

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Leo

01-04-2002 06:09:20

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Re: Re: Re: Massy Harris 50 in reply to B.C., 01-03-2002 13:47:26

I actually did install a new Drive pin with the Steel Collar to drive the Oil Pump also. I forgot about that one. For the Few Dollars that It cost, I think the extra insurance that it will not come apart is well worth it. At the time I also found out that TRW was the only company with all american made parts for my american motor.

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B.C.

12-30-2001 18:38:28

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Re: Massy Harris 50 in reply to Robert , 12-30-2001 09:15:20

I had the oil pump go out on our MH50 one winter. The drive gear is retained on the pump drive shaft by a setscrew. This setscrew had backed out and scored the endplate of the pump and then fractured. So no oil pressure. I caught it before the engine started and managed to rebuild the pump. Been fine ever since.

If the oil pump failed and the engine froze, you should be able to move the tractor with the trans in neutral.

I had an old timer tell me that MF's used to fail their coupling between the end of the trans and the input to the differential but I never talked to anybody that had that happen. And that's different than what you describe.

I think what you have is well worth fixing. If the oil pump let go, it's possible that a rebuilt pump, a cleaned up crank, new set of bearings and maybe some cylinder honing will get you going again.

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Ken

12-30-2001 18:14:14

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Re: Massy Harris 50 in reply to Robert , 12-30-2001 09:15:20

I've been looking for a 50. If you're fed-up with it put a price on it & let me know.

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Big Dean

12-30-2001 17:13:03

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Re: Massy Harris 50 in reply to Robert , 12-30-2001 09:15:20

Did it make any noise just before it seized & have you tried to turn the engine with the clutch completely disengaged? I have seen quite few of the oil pump gears turn loose on the pump shaft. Usually though they will squeal just before they seize from the bearings not getting oil. Like Kelly said in his post it is not that hard to jerk the head & pan to take a look if you have deterred it is the engine and not something in the drive train.

Massey Ferguson Tips

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Kelly

12-30-2001 16:58:06

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Re: Massy Harris 50 in reply to Robert , 12-30-2001 09:15:20

Wow, not good. I have a MH 50 too. Have ran it through more than it should have, but it keeps going! I have never heard of one seizing up. In a few hours you can have the top of the motor tore off. Basically remove the hood, sides, gas tank, valve cover, and head. Bottom end isn't bad either. Basically remove the oil pan! I assume it had oil? Good luck and as Jim said, sorry to hear about your misfortune. Please post anything you find out!

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jim

12-30-2001 14:52:17

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Re: Massy Harris 50 in reply to Robert , 12-30-2001 09:15:20

I'm very sorry to hear of your trouble at this time of year. I've owned my '55 MHF 50 for 3years and use it very little, brush hoging ,snow plowing and some post hole diging. I'am interested to hear other posts on this. good luck on your fix. jim

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