ALTERNATOR GP-CHARGING 2076035 - Caterpillar

Illustration 1 g01095004
Implement Control Valve
(1) ResolverResolver (1) is on all implement control valves except the last valve section of the stack. See Illustration 1.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.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 Tip
Ripper Lift
Bulldozer Tilt
Bulldozer LiftIf one or more valve sections fail to work correctly, the resolver that is in the valve section that is closest to the pump that malfunctions may be bad.
Illustration 2 g02120758
(2) Ripper tip control valve
(3) Ripper lift control valve
(4) Blade tilt control valve
(5) Blade lift control valveNote: This illustration is a typical valve stack, but may be different depending on machine serial number.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 may be 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. The seals may be failed if the stall pressure is not met on the machine.