HP51B678-20-20-10-02GA Pump for XCMG QY50K
Pump code HP51B678-20-20-10-02GA identifies a multi-section hydraulic pump used on compatible XCMG QY50K cranes. Every code segment matters for displacement and interfaces.
Identification and Matching
Full HP51B678-20-20-10-02GA code
Rotation direction and drive shaft
Section order and port orientation
Mounting flange and coupling
QY50K serial number
Application and Service Scenarios
Use after confirmed internal wear, section-specific flow loss, excessive noise or mechanical damage. Suction air leaks, oil contamination and valve faults should be excluded.
Inspection and Installation
Clean and prime every section, verify rotation and coupling alignment, then start unloaded. Check each circuit pressure/flow, temperature, sound and leaks.
Frequently Asked Questions
Can a shortened HP51 code be used?
No. Match the complete suffix.
Why check section order?
Each section may supply a different circuit.
What causes early failure?
Dry start, contamination, cavitation or coupling misalignment.
Export Packing
All ports are capped, the drive shaft is protected and the pump is fixed in a reinforced crate.
