XCMG Brake Relay Valve 800900013
XCMG part 800900013 is a relay valve for compatible crane carrier pneumatic braking circuits. It controls rapid application and release near the serviced brake circuit; port identification and circuit position must match.
Identification and Matching
XCMG number 800900013
Supply, delivery, control and exhaust port markings
Thread sizes and port orientation
Mounting-hole spacing
Carrier model, axle circuit and serial number
Application and Service Scenarios
Replacement may follow confirmed internal leakage, slow application/release, sticking or physical damage. Low air pressure, contaminated lines, chambers, hoses and control valves can create similar braking symptoms.
Inspection and Installation
Fully depressurize the system, cap clean lines and connect each marked port correctly. Leak-test, build system pressure and verify balanced application and full release before controlled road testing.
Frequently Asked Questions
Can ports be connected by position only?
No. Follow the functional port markings and diagram.
Does slow brake release prove valve failure?
No. Check hoses, chambers and upstream controls.
Is a leak test required?
Yes, before the carrier returns to service.
Export Packing
All pneumatic ports are capped and the valve is protected from contamination and impact.
