G Close dump valve. Shut down hydraulic system. Disconnect hydraulicactuator from rear door (p 9-30) and allow to hang from ceiling. Remove flowcontrol valve and hydraulic line to valve actuator tee connection. Installjumper hose between pilot check valve and actuator tee connection. Reinstallactuator to upper rear door (p 9-30). Turn on hydraulic system. Hold upperrear door switch in UP position. If actuator opens door, replace flow controlvalve. If actuator does not open door, replace pilot check valve (p 16-30).H Remove inlet and outlet hydraulic hoses from tee connectors. Install teeconnector and gage between inlet and outlet hoses. Turn on hydraulicsystem. Operate upper rear door switch in both UP and DOWN position.Gage should indicate at least 300 psi. If limited or no pressure is indicatedreplace or repair hydraulic lines between actuator and direction control valve.If sufficient pressure is indicated, replace actuator (p 9-30).2-223Change 4TM 9-2350-267-20
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