Construction machinery repairing and maintenance knowledge for brand equipments Factory China - New - Liteng Machinery

20/Sep2026

Fixing “Power Cutout After 10 Minutes And Traction Controller Overheat” On A ...

A blocked traction controller heat-sink cooling duct and a failing output-phase MOSFET induced thermal shutdown, with intermittent phase-loss triggering violent travel motor shudder

19/Sep2026

Resolving “Boom Chatter And Slow Lift” On A Doosan Mega 300-V Wheel Loader

A blocked boom cylinder make-up check valve filter caused rod-end cavitation during arm-in operations, inducing violent hydraulic oscillation and pump starvation

19/Sep2026

Curing “Swing Drift And Excessive Hydraulic Heat” On A Hitachi ZX470LCH-5G Ex...

A shattered central swivel joint seal ring allowed pilot pressure to cross-port to the return line, locking the main pump at maximum displacement and overheating the system

19/Sep2026

Fixing “Drive Slippage And Hydrostatic Overheat” On A Manitou MT 1840 Telehan...

A fatigued charge pump relief spring dropped closed-loop charge pressure, causing the variable drive motor to starve for fluid and cavitate under heavy load

18/Sep2026

Resolving “Heavy Steering And Main Pump Whine” On A Volvo L120G Wheel Loader

A varnish-seized flow-amplifier priority valve starved the steering circuit and dead-headed the main pump against the steering relief valve during full-lock turns

18/Sep2026

Curing “Swing Lockup And Pump Whine” On A JCB 220X-3 Excavator

A jammed swing brake release shuttle valve kept the mechanical brake engaged, forcing the main pump to dead-head against a locked swing motor and stalling hydraulics

18/Sep2026

Diagnosing “Power Loss And Auto-Regen Failure” On A Toyota 8FDU25 Diesel Fork...

A shorted DPF differential pressure sensor caused the ECM to falsely calculate a fully soot-loaded filter, triggering a destructive engine derate and preventing regen completion

17/Sep2026

Resolving “Harsh Downshift And Torque Converter Overheat” On A Volvo L120H Wh...

A clogged lockup solenoid filter screen caused continuous converter slippage, degrading transmission oil viscosity and inducing violent shift valve cavitation under heavy V-pattern loading

17/Sep2026

Curing “Sluggish Hydraulics And Continuous Pilot Pressure Alarm” On A Caterpi...

A shorted pilot pump pressure sensor harness caused the ECM to default into limp mode, zeroing the main pump displacement and disabling the proportional reducing valve

17/Sep2026

Fixing “Engine Dies After 10 Minutes And Regulator Icing” On A Mitsubishi FG2...

A restricted engine coolant flow to the vaporizer and a ruptured diaphragm caused Joule-Thomson freezing, blocking LPG flow and starving the engine after warmup

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Knowledge

Fixing “Power Cutout After 10 Minutes And Traction Controller Overheat” On A ...

Resolving “Boom Chatter And Slow Lift” On A Doosan Mega 300-V Wheel Loader

Curing “Swing Drift And Excessive Hydraulic Heat” On A Hitachi ZX470LCH-5G Ex...

Fixing “Drive Slippage And Hydrostatic Overheat” On A Manitou MT 1840 Telehan...

Resolving “Heavy Steering And Main Pump Whine” On A Volvo L120G Wheel Loader

Curing “Swing Lockup And Pump Whine” On A JCB 220X-3 Excavator

Diagnosing “Power Loss And Auto-Regen Failure” On A Toyota 8FDU25 Diesel Fork...

Resolving “Harsh Downshift And Torque Converter Overheat” On A Volvo L120H Wh...

Curing “Sluggish Hydraulics And Continuous Pilot Pressure Alarm” On A Caterpi...

Fixing “Engine Dies After 10 Minutes And Regulator Icing” On A Mitsubishi FG2...