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

12/Sep2026

Curing “Boom Shudder Under Load And Engine Lug-Down” On A Caterpillar 336F Ex...

A varnish-seized pump regulator control piston locked the swashplate at maximum displacement, causing the main pump to dead-head against the relief valve and stall the engine

12/Sep2026

Fixing “Violent Drive Judder in Reverse Only” On A Linde E25 Electric Forklift

A loose speed encoder rotor on the traction motor shaft caused delayed Hall-effect sensor feedback, desynchronizing the AC controller’s phase commutation during direction reversal

11/Sep2026

Resolving “Hydrostatic Drive Overheat And Power Loss” On A JCB 436HT Wheel Lo...

A breached transmission oil cooler allowed engine coolant to invade the hydrostatic loop, emulsifying the oil and starving the variable-displacement motor of lubrication film strength

11/Sep2026

Curing “Loss Of Bucket Curl Force And Linkage Binding” On A Komatsu PC490LC-1...

A reversed-installed bucket cylinder check valve caused cavitation during high-flow arm-in operations, collapsing the cylinder and bending the bucket linkage rods

11/Sep2026

Fixing “No Travel After Charge And E-124 Battery Fault” On A Hyster H40XM Ele...

A welded main battery contactor caused by a seized hydraulic pump motor bearing locked out the BMS and prevented travel and lift commands after charging completion

10/Sep2026

Resolving “Travel Loss in One Direction And Swirl On Braking” On A Liebherr L...

A scored hydrostatic travel-direction spool and a fatigued charge-pump relief spring caused cross-port internal leakage, preventing forward clutch fill and inducing brake-valve cavitation

10/Sep2026

Curing “Hydraulics Stop Working After Five Minutes” On A Sany SY215C Excavator

A blocked load-sensing filter screen and a partially stuck pump regulator PC valve starved the variable-displacement pump of control pressure, triggering progressive flow collapse and restart-depen...

10/Sep2026

Diagnosing “Intermittent Drive Cutout And E-45 Motor Fault” On A Toyota 8FBCU...

A speed-encoder bearing failure produced erratic rotor-position feedback, triggering the MOSFET drive controller’s phase-loss protection and intermittent drive shutdown—corrected by encoder replace...

09/Sep2026

Resolving “Boom Nodding And Bucket Drop” On A John Deere 644K Wheel Loader

A shattered load-sensing relief valve cartridge and a worn boom lock spool caused total loss of hydraulic holding pressure and erratic pump displacement

09/Sep2026

Curing “Right-Side Travel Drift And Spongy Tracks” On A Komatsu PC360LC-11 Ex...

A jammed travel motor balance valve caused mechanical brake dragging, overheating the final drive and melting the track tensioner grease

First 11 12 13 14 15 16 17 Last14/376

黑料福利网

Knowledge

Curing “Boom Shudder Under Load And Engine Lug-Down” On A Caterpillar 336F Ex...

Fixing “Violent Drive Judder in Reverse Only” On A Linde E25 Electric Forklift

Resolving “Hydrostatic Drive Overheat And Power Loss” On A JCB 436HT Wheel Lo...

Curing “Loss Of Bucket Curl Force And Linkage Binding” On A Komatsu PC490LC-1...

Fixing “No Travel After Charge And E-124 Battery Fault” On A Hyster H40XM Ele...

Resolving “Travel Loss in One Direction And Swirl On Braking” On A Liebherr L...

Curing “Hydraulics Stop Working After Five Minutes” On A Sany SY215C Excavator

Diagnosing “Intermittent Drive Cutout And E-45 Motor Fault” On A Toyota 8FBCU...

Resolving “Boom Nodding And Bucket Drop” On A John Deere 644K Wheel Loader

Curing “Right-Side Travel Drift And Spongy Tracks” On A Komatsu PC360LC-11 Ex...