GUARD GP-RDTR 4710421 - Caterpillar

Personal injury or death can result from escaping fluid under pressure.Escaping fluid under pressure, even a very small pin-hole size leak, can penetrate body tissue and cause serious injury and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.Always use a board or cardboard when checking for a leak.
Probable Causes
The flow control valves or springs are failing.Recommended Actions
Note: Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the machine. You must be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component that contains fluid. Dispose of all fluids according to local regulations.The Flow Control Valves or Springs are Failing
Make sure that the "Flow Rate" for the hydraulic control valve is adjusted correctly.Reference: Refer to the latest version of Specifications, Systems Operation, Testing and Adjusting, UENR4097, "Piston Pump (Implement) - Test and Adjust"
Check the current that is applied to the solenoid valve.
Make sure that the solenoid valve is functioning correctly.
If necessary, repair the solenoid or replace the solenoid valve.