I have a 1980. Case 850 b trackloader w/ 4 in 1 bucket. Just bought it used. Very strange problem. After couple hrs of operation, when changing from rev to Frw the clutch does not engage. I move the lever back to rev. Clutch engauges. Do this couple times. Frw clutch engauges and I am back to work. Does this every so often. Trans oil full. Sometimes when this happens I notice the trans pressure gauge drops when i put lever in Ftw then sometimes shows pressure but still will not engauges Ftw clutches. Have put 20 hard hours on machine so far since I bought it. 4 of that today. Did this few times today. Any help would be great. Thanks.
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