Posted by Jimjc038 on August 26, 2010 at 12:11:39 from (216.124.224.51):
I have a 1973 IH 3400a with a backhoe installed and it will not move now.
Everything was going good while I used the loader on a small job in front of the house. Then I noticed that foward was getting weak while using the loader.
Next thing you know I lost the foward pedal then reverse started to get weak. Then reverse came back strong and foward was still gone. Now foward and reverse are totally gone. There is no noise when I step on the pedal. When I lift the rear The tires spin when I apply the pedals in the proper direction.
The backhoe and the loader function perfectly... well perfectly for a 40 year old hoe.
Any Idea where to start? I have changed 1 hydro filter. I have added 5 gals of the correct hydro oil. It is now a little over full. I have a leak on one of the boom rams but everything else does not leak.
I am an auto mechanic and have all manuals on the beast, there is little on the symptoms of the hydro transmission. I do have the hydro trans service manual. Any idea where to start???? Help Please!!
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