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Major problem with 318

4972 Views 21 Replies 10 Participants Last post by  900thun
Well I want to say this is my first post on any tractor forum. I bought my tractor with 600 hours from a coworker. The only thing wrong with it was the paint was starting to chip since it was left outside in the cold Maine winters. I have done a dramatic restoration, paint job,degreased frame, new tires, controls, etc.

Right now I'm having a hard time trying to diagnose what the problem is now. This winter I was very low on hydro fluid, I read somewhere that I could add trans fluid dexron 3 to he hydro fluid. I added it and it seemed to be fine and then I noticed the reverse speed was slower. Not sure if this was related to he difference in fluid.

Second issue is that when I move the throttle forward or reverse there is a jerking motion that is quite severe. I checked the linkage and I didn't seem to notice anything out of the norm. But I'm not quite sure what to look at.

Third issue is that when the tractor is off I can just roll it around. Is this a normal thing. for some reason I thought it should not move at all. What could cause this to happen.

Thank you for all the help. I'm trying to keep this tractor in tip top shape
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Welcome to the group. Hopefully there is nothing seriously wrong with your "baby". In this regard, a first simple thing to check is the position of the hydro release lever under the right side of the fender pan. I would be curious to know where you read about mixing dexron 3 and JD low viscosity fluid. Most folks regard mixing of different fluid or oil types as undesirable or risky. Even though no damage may have been done, it would be wise to do a filter and fluid change to low viscosity Hygard. Do you have a serious fluid leak, or was the low level due to adding an implement with an empty hydraulic cylinder(s)?
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