Selective Control Valve Troubleshooting

Symptom Problem Solution

SCV metering valve knob will not turn

Dirt build-up

Clean dirt under metering valve knob

Remote cylinder will not lift load

Flow check

Cycle SCV levers

Excessive load

Reduce load

Hoses not completely installed

Attach hoses correctly

Incorrect remote cylinder size

Use correct size cylinder

Remote cylinder rate of travel too fast or too slow

Incorrect rate of operation

Adjust rate of operation

Direction of remote cylinder travel is reversed

Incorrect hose connections

Reverse hose connections

Hoses will not couple

Incorrect hose male connectors

Replace connectors with ISO Standard connectors

Detent does not hold or releases too soon

Detent selector in wrong position

Turn selector to correct position

Pressure restriction with some implements

Reduce oil flow by changing metering valve setting

Flow control or detent release setting incorrect

Adjust detent relief setting

SCV lever does not release

Detent selector not in the automatic detent position

Turn selector to correct position

Built-in pressure leakage with some implements

Increase oil flow by changing metering valve setting

Flow control or detent release setting incorrect

Adjust detent relief setting

AG,RF30435,2574 -19-21DEC99-1/1