JD 300 shifting problem

[anvilhammer]

I'm a new member. Not sure if this is the right category for a mechanical question. I'm looking at a JD 300 Industrial loader backhoe to purchase. It has several problems but the one I am mostly concerned about is the shifting problem. This tractor has a manual tranny with two shift levers on the floor and a forward, reverse lever on the left side of the column. The left one shifts from high, low park and neutral. the right lever shifts from first to fourth. Heres the problem. When you step on the clutch, you can shift either left or right lever to any position, but when you shift the other lever the gears grind. It doesn't matter which side you shift first. Either one goes in easily until you shift the second one. Once they are in the tractor drives OK. I tried lowering the RPM's but that doesn,t help. Does anyone have any suggestions as to what the fix is? Thanks. 1941 M Farmall, 1953 NAA Jubilee.

 

[jd110]

The reverser transmission was prone to the gears clashing when shifting with cold oil. The forward and reverse clutch are wet clutches which causes alot of drag until the transmission oil is warmed up. Sometimes it helps if you hold the clutch in for 10 or 15 seconds before going into gear the first time. If the problem persists even when the oil is warmed up, then you might have warped clutch plates or clutch valve linkage could be out of adjustment.

 

[anvilhammer]

Thanks for the reply. Are these clutches and valve accessible without splitting the tractor? The issue still persists when the oil is warm. The forward and reverse works well once the High Low lever and the shifting lever are engaged.