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A clogged pilot filter and contaminated swing brake solenoid caused insufficient pilot pressure and uncommanded brake release
A failing transmission output speed sensor and worn clutch pack seals caused erratic gear shifting and torque converter lock-up cycling
A locked-up LPG converter and melted fuel line caused complete vapor lock during high-demand operations
Curing Slow Pilot Response and Joystick Drift on a Komatsu PC490LC-11 Excavator
A clogged torque converter lock-up valve and degraded transmission filter caused torque converter overheating and power loss
Worn 1A contactor tips and a shorted mast height potentiometer caused severe voltage drops that reset the drive controller
Melted piston seals and a stuck port relief valve caused by sustained oil overheating led to massive internal bypass and loss of holding power
A collapsed suction filter element and stuck load-sensing shuttle valve caused simultaneous hydraulic circuit starvation
A corroded CAN bus connector and failed manifold absolute pressure sensor caused the engine control module to shut down completely
A corroded swing bearing gear and failed slew motor brake caused the machine to overspeed and trigger false load warnings
