Liebherr 631B Crawler Loader Hydraulic question

   / Liebherr 631B Crawler Loader Hydraulic question #1  

Yehusha

New member
Joined
May 24, 2025
Messages
3
Tractor
Liebherr 631B, JD 110, Case TR310, Terex 5519
Hello,
I recently purchased a Liebherr 631B that runs fine but it needed new batteries, so I put a new set in and assumed that the switch solenoid was the positive cable, of course it wasn't, which I discovered after some smoke and sparks when I turned the ignition switch on. I melted out a 10 gauge wire that runs to the alternator and starter by the time I got the battery cable off but otherwise things seem fine. Now my loader hydraulics don't work, I can cycle the two loader valve solenoids on the right side under the loader arm by running power to them but the hydraulics still don't run. The loader drives but I can't get the loader activated. I'm not seeing any other solenoids that might be connected. Has anyone had anything similar happen?
Thanks,
 

Tractor & Equipment Auctions

(2) UNUSED 31" X 8 MM EXCAVATOR TRACKS W/ PINS (A60432)
(2) UNUSED 31" X 8...
Eagle Weathervane (A55853)
Eagle Weathervane...
Kubota M6 131 HP
Kubota M6 131 HP
1959 DODGE D510 DUALLY FLATBED TRUCK (A59823)
1959 DODGE D510...
2018 Kubota M5-111 (A60462)
2018 Kubota M5-111...
2024 CATERPILLAR 305 CR EXCAVATOR (A60429)
2024 CATERPILLAR...
 
Top