TM 5-3805-258-24-1H Y D R A U L I C S Y S T E MPRESSURE TEST OF PILOT SYSTEMPressure Test At The Selector And PressureControl ValveWARNINGMake reference to WARNING on first page ofHYDRAULIC SYSTEM TESTING AND AD-JUSTING section.T o o l N e e d e d :6 V 4 1 6 1 H y d r a u l i c T e s t G r o upS E L E C T O R A N D P R E S S U R E C O N T R O L V A L V E1. Tee. 2. Cap.1.2.T E S T I N G A N D A D J U S T I N GRemove cap (2). Install a 5P5008 Connector,6V3081 Hose and 5P4815 Pressure Gauge (0to 4150 kPa or 0 to 600 psi) on tee (1).Start and run the engine at high idle. The pres-sure reading, with the oil at normal operatingtemperature, must be 2800 ± 340 kPa (410 ± 50psi).P I L O T P U M P S E C T I O N R E L I E F V A L VE3. Plug.3. If the pressure reading is not correct, stop theengine and remove plug (3) from the reliefvalve. Remove the old cartridge valve andinstall a new one.4. Install plug (3). Remove the test equipmentand install cap (2) on tee (1).Optional Pressure Test At The Lift And TiltControl ValveThis is an optional method to check the pressure inthe pilot system. The pressure can be checked at fourdifferent places during TILT BACK, DUMP, LIFTand LOWER operations. The disadvantages of thisoptional method are: the control levers must bemoved to check the pressure and air must be removedfrom the pilot system (See PROCEDURE TO RE-MOVE AIR FROM PILOT SYSTEM).NOTE: The pressure of the pilot system can bechecked at two additional places on the attach-ment control valve.Pilot Pressure For Tilt Back1.2.3.Disconnect hose assembly (1) from elbow (2).Install 619258 Swivel Tee (6) between hose as-sembly (1) and elbow (2).Install 5P5008 Connector (5) on the swivel tee.4-70
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