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JRB Coupler

chickenminer

Well-Known Member
Joined
Jun 19, 2016
Messages
72
Location
Alaska
Guys...
I got a Hitachi EX300 LC-3 with a JRB Slide Loc coupler. The coupler isn't unlocking. This has the toggle switch in the cab to lock/unlock.
I've traced the wiring and have power to the solenoid box. When I flip the switch to unlock it blows the fuse. If I disconnect the power lead
to the box and flip it doesn't blow the fuse. So I figure something in the solenoid box is shorting out.
Anyone happen to have a schematic for the box or install manual for the older slide-loc coupler ?

Thanks!
 
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