✅ Solution:
Check if solenoid 11MY21 is energized.
Inspect brake valve 7.2 for sticking.
Test pilot valve 17 (should be 30 bar).
Check spool port pressure (25–30 bar).
Confirm pressure at shuttle valves (5, 6, 8, 9).
Clean or replace solenoid, shuttle valve, motor, or brake valve as needed.
Resolve any air locking issuesNote:-Download User Manual For More Detail .