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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

case 1150 track loader

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Jerrod Mitchell

07-31-2005 13:59:02




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I have a case 1150 track loader that worked fine, when purchased. have not used in the last 6 years. the problem is in the right drive it will not pull in forward or reverse, the shift stick dos'nt feel right it is smooth when shifted , the left hand has more of a clicking feel,although the left side works fine as long as the right side is in nuetral, if the right side is in forward or reverse the left side will stop like you have applied the brakes. This unit was used as an basement digger before we purchased, it looks great no breaks or welding and we did not abuse.It was working fine and just like you fliped a switch it stoped pulling on the right side. any ideas. and if so are their any illustrations on the trans. control valveing. thanks Jerrod

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george md

07-31-2005 19:57:27




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 Re: case 1150 track loader in reply to Jerrod Mitchell, 07-31-2005 13:59:02  
jerrod, Before you tear into the valve body,the detents are adjustable from the outside. On top of each
spool is a lock nut on an allen screw , that is the
adjustment.

Your description sounds like you have both a forward and a reverse clutch engaged at the same
time . The only thing that I know of that will
cause that condition is a broken oil control ring on the clutch shaft. Forward and reverse
ports are on the rear of the clutch shaft , remove the six bolts in the cap and slide cap
off , outer oil control ring should be broken.

george

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stevieandsam

07-31-2005 18:33:01




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 Re: case 1150 track loader in reply to Jerrod Mitchell, 07-31-2005 13:59:02  
the control levers on this transmission are connected to "spools", which look like small camshafts except that all of the lobes are perfectly round and move forward and backward in the valve head and open or close different oil journals which trigger the direction of the tractor. what makes these stay in position, or "click" when you move the lever are the valve detent assemblys, which stick out of the top of the transmission control valve. they are easy to find, as the detent adjusting screws have slots on the head and lock nuts around the base of them. based on what you discribed, i'd say these detent assemblys are just stuck from sitting for six years. follow the rod to the spool, then follow a straight line back to the top of the transmission control valve and find the detent adjusting screw directly over the spool that controls the right track. you may want to try to back off the lock nut, then unscrew the detent adjusting screw all the way out and remove it completly. then spray some penitrating oil down in the hole, tap the area around the hole lightly and work the lever back and forth. there is a spring down there so you won't really "click" until you put the adjusting screw back, but you might get lucky. the real fix is to pull the control valve off the top of the trans and dump the whole thing in some parts cleaner overnight. I know it looks tough, but if you just number and label each hose as you remove it, it really isn't as hard as it looks. if you can pull the head off an engine, then you have enough skill to pull the valve off the trans.

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