STEERING CONTROL VALVE - TM-5-3805-260-24

TM-5-3805-260-24 Scraper Tractor: Elevating Self-Propelled 11 Cubic Yard Sectionalized and Nonsectionalized Manual
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TM 5-3805-260-24 STEERING CONTROL VALVE 1. Plug for relief valve pressure tap. 2. Steering control valve. 1. Remove plug (I) from steering control valve (2) and install the hose for the pressure gauge. Connect the other end (of the hose to the 0 to 4000 psi gauge (from the 5P5224 Pressure Gauge Kit). 2.Start the engine and turn the machine against the stop. 3.With the engine at high idle, keep the steering wheel in the turned position. Watch the pressure gauge. 4. The indication on the gauge is the pressure of the oil that opens the relief valve for) the steering circuit. The correct pressure setting of the relief valve is 2000 25 psi (140.6 1.8 kglcm²) (13 790 172 kPa). STEERING CONTROL VALVE 2. Steering control valve. 3. Plug. 5. If it is necessary to change the relief valve setting, remove plug (3) from the steering control valve. Add shims (4) for an increase in the pressure setting, and remove the shims for a pressure decrease . PRESSURE CHANGE FOR ONE SHIM Part No. Thickness Change in Pressure 3H2549 010 in. (O 25 mm) 40 psi (2 8 kg/cm²) (276 kPa) STEERING CONTROL VALVE 3. Plug. 4. Pressure relief shims. Check of Valve Spool Center Position The valve spool is kept in the NEUTRAL position by springs (3) and (4). The spool must be in its center position .when the springs move the spool to NEUTRAL. To check the center position of the spool: 1. Install two 600 psi gauges to check the pressure at valves (1) and (2). STEERING LINES (TOP OF GOOSENECK) 1. Bleed valve for right turn circuit. 2. Bleed valve for left turn circuit. 2-114

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