Massey Ferguson Super 90 Oil Leak

AgMan5949

New User
Greetings,

My name is Johnny Viebrock, I am an Agriculture Education Teacher/ FFA Advisor in Smithville, Missouri. We were donated a Massey Ferguson Super 90. When it arrived, it was leaking what looked like engine oil out a weep hole on the bottom of the transmission. The oil color was coal black. The tractor would not go into gear at all. I determined that the tractor was low on hydraulic fluid, and put almost 6 gallons into the hydraulic reservoir. After pumping the clutch a few time, it went into gear better. However, when the engine was running now, it would pump hydraulic fluid out of the reservoir under the top plate. (Determined there was no gasket there at all.) However, now when the engine was running, it poured out hydraulic fluid out of the same weep oil, only at a much faster rate. I have read the forum some and I can see where this issue has been addressed some, but this is a little outside my wheel house and I am looking for some guidance as I move forward. This project is something I am doing with a group of high school students in our Agriculture Tractor Power Class. I didn't mention above that this tractor has been sitting at least 10 years and not running. I did put oil, fresh fuel, and two new batteries, and it turn over about three times and fired right off.

Here are a few questions that I am sure will be asked:

1. Massey Ferguson Super 90 2wd.
2. Perkins Diesel
3. It has the High/ Low Transmission /(Lever was found not connected, when we split the tractor).
4. Oil originally appeared Coal Black, but once we filled Hydraulic Fluid reservoir, we developed a hydraulic fluid leak too.
5. When tractor was split, a large amount of hydraulic fluid leaked from the transmission side of the tractor.
6. Hoses appear to be in decent shape, but at this point will consider replacing just to be safe.
7. There appears to be some black oil leaking from behind the clutch assembly, so I still am inclined to believe the rear main seal is leaking.
8. The rear brakes are non existent, and it appears all the adjustment has been used. I am sure the rear end will need to be taken apart to repair brake material too.

Can some one supply a source for the best manual for making repairs?

Can someone work with me to help us get this project completed?

Thank you for your time and consideration.

Best Agricultural Regards,

Johnny D. Viebrock
 
A service manual from Massey is the best.

I can show you that the I.T. manuals have incorrect information printed. They tell you to assemble the rocker arm shaft in a way that results in no oil going to the rocker arms (M.F. 65).
 
If it's the straight eight speed, I MIGHT think it's worth repairing. If it has the Multi-Power transmission, I would pass as they can be a pain to work on and find parts
for.
 
(quoted from post at 07:55:25 10/18/21) If it's the straight eight speed, I MIGHT think it's worth repairing. If it has the Multi-Power transmission, I would pass as they can be a pain to work on and find parts
for.

Good Morning Dieseltech,

I was told by somebody that you would be the guy to talk with. Are you willing to visit outside the forum? I could really use the help. In the past, we have focused on old 2 cylinder JD and Farmall tractors. Last year we did a Ford 1600, and it was a costly lesson. We got it back together and running real smooth, but it was interesting learning experience.

The transmission is the Multi-Power. The tractor does drive and seems to work fine, other than the massive loss of oil.

When we split the tractor apart, the main seal on the, flywheel housing is broken in two places. I think the tractor was apart before and may had destroyed the seal when putting it back together. I think it could be why they quit using it.

Can you recommend the best Technical manual to obtain?

Thank you for your reply.

Johnny
 
The rear seal is a rope seal, and the seal holder is two piece upper and lower. Call some evening, five seven four eight three five 3292, used to work at the local MF
dealer years ago.
 
Hello
If this is the multi-power version...
I would suspect that one of the oil hoses for the multi-power has a hole in the side of it The hose runs very close to the shifter linkage for the Multi-power shift, and will
eventually rub a hole in the hose. I have fixed two of these problems in my tractors. I have a total of 10 running Massey 90s here on my farm...3 of which are the MP version.
If you need parts...I may have them.
Wayne
 
Hey Wayne. I have a super 90 that has extremely hard steering wheel turning and I am suspecting it needs power steering oil. The problem is I dont know where the oil goes. Do you know where I can top off the oil so I wont have to possible open it up and replace the pump? Thank you in advance.
 
Oil filler hole is right on top with the gear shifts, to the left. Same oil as the hydraulics and transmission. There is no independent oil for the power steering.
I would think your power steering pump needs fixing. how are your gear shift boots? The rubbers at the base of the gear shifts? If water gets into your oil, it will damage the seals in the power steering pump and make for hard or no power steering.
An easy way to check your power steering pressure....steer all the way to one side or another and hold it. There should be a squeal come from the tractor. That is your relief valve going off. If it squeals your power steering pump should be OK. If you hear nothing I think your seal kit in the PS pump is damaged.
There is also a possibility that the steering gear below the steering wheel (Where the steering shafts turn horizontal and go through the fuel tank) is rusted up. I have seen this happen as well. There is no way to lubricate it, but I have seen where someone put in a grease nipple for this. Un hook the couplers in front of the fuel tank and see if the steering wheel turns hard.
Your 90 does have the canvass flexible coupler in between the two couplers in front of the tank? I have seen where someone removed this coupler and bolted the two steel ones together. The front coupler needs to be able to move forward and backwards a little. This forward-back movement is what opens the valves on top of the steering cylinder and gives you your power steering.
Wayne
 

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