John Deere 440I Front Hydrulic pump problems

   / John Deere 440I Front Hydrulic pump problems #1  

Rayshobbyfarm

New member
Joined
Feb 2, 2014
Messages
1
Location
Fairbank Iowa
Tractor
1959 John Deere 440I wheeled tractor
I have a 1959 440i wheeled tractor with a model 71 loader attachment. The crankshaft driven hydraulic pump is slipping at higher rpm or under heavy load. I am looking for a parts breakdown and service information on this set up.

I am thinking I need to replace the coupling or shaft but would like to know what I am getting into prior to just taking it apart. Any help would be great.
 

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