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    Case Alpha series EH control drive solenoids voltages

    I have pulled and tested the UCM. I am getting 20k resistance on the RH ua2 Y sensor output to UCM ground(CN1A-1). Here is the test from the book: I am getting a correct (99.5k) resistance reading on the other RH ua1 Y sensor output. Here is the test from the book: This discrepancy seems to...
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    Case Alpha series EH control drive solenoids voltages

    Thanks for the reply. I'm thinking that if I am in ISO mode then only a single joystick signal is used to command both Left and Right sides to drive in the same direction and should see identical readings at the coils..
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    Case Alpha series EH control drive solenoids voltages

    Turns out my voltmeter leads were messing with me, wiring is testing ok now... Serial Number is NBM443628 Here are the current symptoms: (machine is on blocks so wheels can spin safely) The left side turns faster than right. This happens in both ISO and H. Moving the joystick just off it's...
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    Case Alpha series EH control drive solenoids voltages

    Seems to be loose connection on the reference ground from both swash sensors pin 1 through splice #124 back to ucm pin 26 on cn2a. Now to find the splice... not sure where to start looking. The reference ground splice is 6-way and is shared with EHF transducer, control valve sensor grounds, UJM...
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    Case Alpha series EH control drive solenoids voltages

    I'm working on an Case sv185 with EH controls that is throwing code 4754 "Right Swashplate angle sensor - Implausible command, command does not match with swashplate angle" Symptoms include no reverse on the right side. I looked in the service manual for code 4754 and it basically has you...
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