🟡 Lock-up pressure (oil trapped within a chamber preventing component movement). 📂 Official Manual & Technical Sources
In JCB service publications, illustrations use standardized colors to help technicians identify hydraulic states:
Essential for daily maintenance and safety checks for serial numbers starting from 751600 or 806000. 🚜 JCB 1CX Key Specifications 1CX SKID STEER BACKHOE LOADER | SPECIFICATION