I can see why people bypass multi-power

So, I have this mf 50 with a multi power that slips in high. I would like to fix it the right way, but I can't find much information on how to do that. First, I bought an I@t manual for it. This manual doesn't even mention multi power. Then, I bought a Massey service manual. This manual only gives two paragraphs about operation of the system, and how to disassemble the hydraulic clutch. It doesn't talk about the pump or valve, or any trouble shooting at all. What should I do? If I go ahead and split the tractor, will it make more sense? Do you just have to shotgun it? Or keep splitting it and replacing parts until you get it right? Is there a better resource out there?
Another thing about Massey. When you look at that tractor, you think "what a simple tractor." What you might not realize, is that all of the linkages, hoses, pumps, and other complicated stuff, it's all on the inside!
 
Multi power pump pressure should be somewhere around
180-220 psi. Can't tell you where test port is.

My 150 with IPTO uses same pump for clutch pack. Mine
quite working, the intake filter was plugged up. Had to pull lift
cover to get to it.
 
From what I understand, there are no test ports on
this tractor. I guess you mean the cover with the
shift levers? Would it be possible to test the pump
with the cover off?
 
I have a 185 with multi-power, love it. Not familiar with 50, but check all filters and slop in linkage from the lever to the transmission it may need adjusting. With lever in high range, reach where the linkage goes into the housing and see if it lifts up more. Their should be a section in the book about adjustments. Yes you will probably need to split it to work on pumps, strange the MF manual doesn't explain it better. I always try to get the repair manual that the dealer mechanic used, yes their more expensive but worth it in my book.
 
NO, the lift cover, the one your seat is bolted to. Make SURE you read the manual first. If its like mine, there is a roller on the lift pump lever that must come off before lifting the cover. Access is thru the round side cover behind your right foot.
 
Thanks for the info, there is no information I can find in the manual for this. I really do like the multi-power, and I'd like to fix it right. Just can't find the information.
 
Here are two pictures of the 150, the caption IPTO pump should be the same as yours. You can see the intake tube just rear of the pump, the filter is fixed to this tube. 2nd picture is the lift cover.

The instructions on removing lift cover should be in your manual. My 150 doesn't have Muti-Power so this is about all the help I can provide.
a155031.jpg

a155032.jpg
 
Do you still have motor braking?

my experience with these old multi power trans was
that you had to drive them in low range and had no
motor braking,

otherwise they would free wheel down a hill or into
the barn if the brakes were not in top condition.

Dangerous, most would not let kids drive them if any
hills were involved.

But as others have said, I did enjoy driving them
when the system was functioning properly.

Just be aware of the motor braking issue.
 
This might help but I've never used this site- http://www.allbookez.com/massey-ferguson-to-35-multi-power-repair/
 
Plaid Stamp metal sign? Holy cow that's got to be a rare thing. My mom collected them and S&H Green stamps. The first 'rewards' program I suppose.
I have a 65 with MP, been rebuilt by last owner, but I am gun shy to ever use it, just leave it in low. something I rather not have to learn how to fix. I am a slow moving flatlander, and happy about that!
 
Need to run it in high . No oil to sealing rings and clutch disc in low . We wore out many parts til a massey tech told us how they were oiled.
 
Disabling multipower is like trading live pto for non live pto. It's going backwards. The best feature to me was the hill hold feature...being able to let the clutch out halfway and locking the wheels on a hill without using the brakes is nice. Plus freewheeling in low multipower down hill is very hard on the brakes compared to having engine braking in high multipower. Plus you have a can speed up or slow down 1/2 mph in any gear without stopping the tractor. Functioning multipower is by far better than a tractor with disabled multipower.
 

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