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Massey Ferguson 1655 hydraulic drive problems.


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#31 NUTNDUN OFFLINE  

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Posted March 08, 2011 - 01:14 PM

I figured I better update this thread. I got time this past weekend and put a new oil filter on and also put new belts on. Drained some of the hydro fluid out as it was overfull and more then likely the cause of it coming out of the dipstick tube.

I also checked and made sure the fittings were tight on the suction line which they were. I drove it around a little while and it kept loosing pressure, which I am guessing is air in the system. I let it sit running for a little while hoping it would work the air out, then cycled the 3pt and middle lift a couple times and tried driving around again. Still kept basically stopping, then it would go and then it would stop. I checked the fluid level again and it was fine. I don't know how long it is going to take to get the air out of the system.

Going to mess with it some more this weekend. If it doesn't get any better I might have some 1655 parts for sale LOL

#32 mjodrey OFFLINE  

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Posted March 08, 2011 - 01:21 PM

Sounds like you got some things done.:thumbs:

#33 coldone OFFLINE  

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Posted March 08, 2011 - 01:41 PM

You could always contact eaton and ask them.

#34 olcowhand OFFLINE  

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Posted March 08, 2011 - 02:55 PM

You could always contact eaton and ask them.


That would be a Sundstrand unit. Or did Eaton buy out Sundstrand?

#35 NUTNDUN OFFLINE  

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Posted March 11, 2011 - 10:20 AM

Seeings how I am going to be diving in to this again this weekend. What oil do you guys use in the hydro trannies? I think last time I added straight up hydraulic oil and I don't know if that might be part of my problem or not.

#36 olcowhand OFFLINE  

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Posted March 11, 2011 - 10:30 AM

NEVER use hydraulic oil!!!!!!!!!! A definite no-no! Either straight 30w motor oil or ATF Dexron III.

#37 ducky OFFLINE  

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Posted March 11, 2011 - 10:34 AM

Seeings how I am going to be diving in to this again this weekend. What oil do you guys use in the hydro trannies? I think last time I added straight up hydraulic oil and I don't know if that might be part of my problem or not.

George, Do not use regular hydraulic oil in a hydrostatic unit. It does not have to properties to stand up to the extreme pressure found in hydros and also may foam.
I would recommend a tractor-hydraulic oil with a J20C specification.
If used in the winter and stored in ambient temperature you could use ATF to minimize the warm-up time but for plowing and other traction intensive activties J20C is your best bet. There is also a ten micro filter available to do a better job of removing wear particles.

#38 NUTNDUN OFFLINE  

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Posted March 11, 2011 - 10:38 AM

It is tractor hydraulic oil, not straight up hydraulic oil. I guess I should have been more clear on that. I had a 5 gallon jug of hydraulic oil from the John Deere 3120 I had and used that to top off the fluid when I first got the tractor. I will drain the oil and put 30 wt in it.

#39 olcowhand OFFLINE  

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Posted March 11, 2011 - 10:40 AM

I think the John Deere oil is a bit higher, so maybe try 30w motor oil first? ... Just to see if things improve. Yep, straight hydraulic oil will foam bad.

#40 olcowhand OFFLINE  

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Posted March 11, 2011 - 10:41 AM

It is tractor hydraulic oil, not straight up hydraulic oil. I guess I should have been more clear on that. I had a 5 gallon jug of hydraulic oil from the John Deere 3120 I had and used that to top off the fluid when I first got the tractor. I will drain the oil and put 30 wt in it.


Oh, so it's hy/tran oil? I'd still give 30w motor oil a try.

#41 Texas Deere and Horse OFFLINE  

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Posted March 11, 2011 - 11:05 AM

Daniel is right, Sunstand's only like 30# motor oil or what used to be known as ATF type F tranny fluid, which is now ATF Dexron 3.

#42 NUTNDUN OFFLINE  

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Posted March 11, 2011 - 12:09 PM

I am pretty sure it is hytran. I will double check when I get home. I am still going to swap it out for 30wt though to see if it makes any difference with how it is acting. If it doesn't get any better it may be going to the sacrificial gods.... :D

#43 Texas Deere and Horse OFFLINE  

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Posted March 11, 2011 - 12:16 PM

Deere doesn't even recommend that in their Gt's, but says you should use their version made just for their Gt's. just thought I'd put that out there.

#44 NUTNDUN OFFLINE  

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Posted March 12, 2011 - 02:56 PM

Well I got a chance to drain what fluid I could out of the drain at the bottom of the tranny. I filled it back up with straight 30wt and it is doing better but still has a tendency to loose speed and definitely doesn't have that authority feeling to it when you mash the pedal. It also doesn't have anywhere near the speed I think it should have. My Massey MF12 is faster in 3rd low then this thing is in high with the pedal pushed all the way forward. I pulled it back in the garage and checked the oil and it was a little frothy. I am wondering if I should drain the oil again due to whatever hydraulic oil was in the lift cylinders now being mixed with the 30wt. At least made some progress.

#45 coldone OFFLINE  

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Posted March 12, 2011 - 04:54 PM

Have you tried the immovable object test? Thats where you either tie the back of the tractor to a tree or use the front and try to push the tree to see if you can get the tires to break traction? That should tell if the hydro is any good or not.




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