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Case 580 Super L Backhoe

Marlan Burkhart I have a Case 580 Super L and I was welding the muffler and cylinder and now it won't move. I would appreciate any suggestions on how to fix this problem.
alrman Do you have shuttle or powershift?
Marlan Burkhart It has shuttle. I was welding the pipe back on the muffler and a seam on the main cylinder.
alrman If you were welding exhaust in situ - on the machine, it's possible some slag may have dropped down onto the control valve of the transmission.
Check wiring there - it may have caused fuses to blow on start up - have you checked them?
Could be coincidence with welding repair, there is a circlip in the control valve modulator which breaks & jams it up sometimes causing loss of drive - has there been any drive issues lately?

Marlan Burkhart I unfortunately do not have a manual for the backhoe so all I have to go by is the circuit printout and I am not sure what you are calling a control valve modulator.
Andrade My machine decided not to back up today when I put it in reverse - ANY INDEAS ON WHAT I SHOULD DO--?



alrman Marlan,
the modulator is a mechanical part of the transmission control valve. Before you worry about that - have you checked fuses & the wiring on the top of the transmission??
you need to start another thread. - check your fuses in the meantime....

Bill Stone I have a 1985 case 580k backhole. I need to replace the fan belt. It looks like I will have to remove the radiator and other parts to get the new belt on. Looks like a shaft goes thru a housing all the way under the radiator. Has anyone replaced the belt on one of these before? Is there an easier way? please help

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