800901160 brake valve for XCMG ZL50G/ZL50GL Wheel Loader

product parameters

Product Name: Foot Brake Valve
Part No.: 800901160
Applicable Model: XCMG ZL50G, ZL50GL Wheel Loader
Type: Full hydraulic brake control valve
System Position: Service brake circuit
Service Brake Output Pressure: 6MPa
Accumulator Precharge: 5.5MPa (20°C)
Port Type: OEM standard interface
Function: Pedal pressure regulation, brake circuit control
Working Condition: Quarry mining, aggregate yard, heavy earthwork and construction projects

Applicable Scenarios

Used in the service brake system of XCMG ZL50G and ZL50GL wheel loaders, installed at the brake pedal linkage position in the cab to receive mechanical pedal input and output hydraulic brake pressure. Widely used in quarry, aggregate yard, and earthwork construction sites requiring frequent braking and heavy-load travel. It is a key control component for ensuring loader service braking safety.

▪ OEM interface dimensions and pressure ratings for direct replacement on ZL50G/ZL50GL
▪ Matched to ZL50G full hydraulic brake system with 6MPa service brake output pressure
▪ Factory valve body sealing inspection reduces risk of port leakage and internal cross-flow
▪ Smooth pedal linkage provides linear, controllable brake pressure output
▪ Compact structure fits cab pedal mounting space for easy maintenance
▪ Can be stocked together with accumulators, brake light switches, seals, and related brake system parts
▪ Factory air-tightness and actuation testing to filter seized or leaking units

FAQ 

Q：What are the symptoms of a failed foot brake valve?
A: Common symptoms include spongy or sinking pedal, weak braking, loss of modulated braking, brake drag without return, or external oil seepage. Inspect the foot brake valve first when these occur.

Q：Is weak braking always caused by the foot brake valve?
A: Not necessarily. Check accumulator precharge, brake circuit oil level and air ingress, and wheel brake wear first. Inspect the foot brake valve after confirming system pressure is normal.

Q：Can the foot brake valve be repaired?
A: Minor seepage may be addressed by replacing seals. If the spool is scratched, the body is worn, or the pedal linkage seizes, replace the assembly directly to ensure braking reliability.

Q：What to note after installation?
A：Bleed the brake circuit according to the ZL50G brake system bleeding procedure after installation. Confirm pedal travel and brake pressure are normal before putting into service.

Q：How to maintain the foot brake valve daily?
A：Regularly check for external oil seepage and smooth pedal return. During brake system overhaul, inspect the foot brake valve seal condition and address aging or leakage promptly.