ELBOW 0028209 - Caterpillar

Illustration 1 g02063516
Implement Control Valve
(1) Resolver Resolver (1) is located in each implement control valve. See Illustration 1.A resolver is a check valve. The resolver compares two pressures. The lower pressure of the two pressures is blocked. The higher pressure or the higher signal goes to the next component in the resolver network.Each implement control valve has a resolver. The resolver compares the highest primary signal in the control valve to the highest primary signal in the next control valve. The signal resolver network is arranged in a series. The series stops at the pump compensator valve.The signal network can be easily checked. Start the engine and warm up the oil. Run the engine at HIGH IDLE for the check. Operate each control lever in the following order:
Ripper Lift (if equipped)
Bulldozer Angle (if equipped)
Bulldozer Tilt
Bulldozer Lift If one or more valve sections fails to work correctly, the resolver that malfunctions that is in the valve section that is closest to the pump may be bad.When any resolver is suspected of being bad, do the following check. Stall any control valve that is closer to the pump supply. The resolver should supply pump stall pressure to the entire system. Try to use the malfunctioning valve. If the malfunctioning valve works properly, the resolver is bad. If the valve does not work properly, the problem is not a resolver problem. If a resolver is bad, remove the resolver. Check the seals and the resolver. Clean the resolver or replace the resolver.