Need a little help This L70D has issues with short to ground in the UA harness! Customer had a root kick up hitting Power reducing /Charge pressure valve. destroying the harness plug with the diode fitted inside of plug also, they wired the plug in " looks to be backwards " need to know if ground wire must be on terminal 1 with diode mark there to that side so to allow 24 volts wire to be in lug 2 with diode leaving 3 terminal open and wireless. Is this correct? Next on the pressure reducing valve i ohm tested the terminals and found #1 to #2 are closed the ohms reading .003 or connected is this valve bad because when i unplug this plug my short to ground is stopped on UA plug SE504 im sure is part of this circuit if i unplug this short to ground stops also i sure these plugs share a blue and white + 24 v some how the same blue n white wire supply CU 201 So to operate the pull and hold. "fuel leaver run solenoid" MA201 any understanding of this loader is self taught over the last few days, A little help from someone with experience would be great
Pin 3 SE504 share the same wire to pin 1 MA502, and pin 11 from connector UA. Wire number 5106 BL/W color. Little hard to understand what you really wanna know... MA502 diode current should pass from wire SB31 (pin 2) to BL/W 5106 (pin 1), but should not pass from the other side. hope it helps.
L70 d brake issues Thank you Steve 650 i had the customer order a valve and Diode before installing i had to fix a bit of wiring solder a spot on his circuit board, where i found the following damage: behind the bracket that holds UA female plug a pink wire 15EE that went to circuit board to RD PLUG That wire melted into a couple of other wires and burned a spot on the circuit board making a mole hill look like a mountain. And its done and out the door thank you for responding,if ever i can help look me up I repair all different kinds of equipment. ty