Touch a magic

[Bob grimes]

Got a 1952 John Deere M. Hydraulic is real jerky and I have to throttle up high to get it to lift. Also blows fluid out The breather cap. Any suggestions?

 

[Hotflashjr]

My guess is it is over full possibly. There is a drain cock on the back below the seat. Open it and see if you get any fluid out. Any idea what is in there for fluid?

 

[Hay maker2]

The detergent oil will collect moisture and turn a milky color, but the hydrulics don't get hot enough to boil it out. Use a non detergent oil such as 10, 20, or 30 weight.
There should be a 3/8" pipe plug on the back of the unit, drain the oil and refill. Fill with oil until it comes out of the brass drain cock. Should be around 3.5 quarts.

 

[Bob grimes]

It is a real milky color. I will drain and refill. Thanks.

 

[Hotflashjr]

I agree. I run straight 20 wt oil in mine and it works just fine. I originally ran 10 wt but even in Massachusetts I did not see the need.

 

[noslendnalel]

Probably sucking air somewhere, likely a pin hole rubbed on suction line under the hood

 

[Mike M]

I agree. Sounds more like a suction leak. Those pipes can leak at the connections too. A suction pipe leak won't always drip oil either.