560 torque amplifier

Rodney Bruce

New User
I have a 560 diesel. The TA is working but when I put it in direct drive it "loads" the engine down. I have a few more weeks of haying and have two questions. 1 What could be the problem? 2. Would it hurt to finish the season with the TA engaged?
 
If the load on the tractor is substantial for the gear it is in, the engine will be slowed and the governor will add fuel to try to recover the RPM. The lever must be moved rapidly as possible into direct, or into reduction, no slow lever action allowed. If you were driving on a field road in first gear with nothing attached, and went from TA back to TA forward, and the engine bogged down and stayed bogged down there is a definite issue with the TA (probably a locked sprag clutch). If it just made a tiny change in engine sound and went back to normal but moved 305 faster, the TA is working correctly. If you were on the road and started in 5th with the TA back, and got up to 12 MPH or so wide open, then put the lever ahead rapidly, the engine should respond by slowing the RPM then building back speed to about 18+ MPH. Running it in low TA (lever back) will not hurt it any more than it is. (If it is) Jim
 
Thanks for responding,so to give you a little more info. With the TA engaged ,in neutral, at idle, if you shift it to direct drive it kills the engine.
 
It must be the sprag (ramp and Roller) clutch in the TA. It has locked and prevents the TA housing from turning in either direction. The part is not expensive, but it requires a double split to repair it. Kevin Meier on here has parts. If you buy a rebuilt TA do not buy a "Mechanical Diode" brand, as they have had issues.
IN my opinion it will not hurt anything to keep running it as is in low TA. The particles of the clutch that are possibly in the system are the only concern, and that might have been historic at this point. If it fails completely and is no longer locked up, it will not move in low TA. in which case it will move in direct. More junk might now be suspended in the Hytran, and cause additional failure. Jim
 

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