TM 5-3805-260-242. Run the engine at test rpm.3, Slowly close the manual load valve to get 1000psi pressure.4. Write down the flow rate (gpm).Test 38: System Oil Temperature1, Open the manual load valve fully.2. Run the engine at any rpm with the systempressures at 0 to 100 psi.3. Move the steering wheel to the RIGHT TURNposition.4. Write down the oil temperature.WARNING: All pressure in the lines must bereleased or injury to personnel and damage toequipment can result while loosening the lines to installor remove the plate assemblies.Find the leakage rates for the right and left cylinders.Use the test information from System Test, Pump Testand Blocked Cylinder Tests. Example: Find the leakagerate for the steering cylinders.Test 27: flow rate of pump and control valve.Test 35: flow rate of pump, control valve and leftside cylinder.Test 4: flow rate of pump, control valve and bothcylinders.The system components tested in Tests 27 and 35are the same except for the left side cylinder. Then thedifference in flow rates must be the leakage in the leftside cylinder (take the test information for Test 35 awayfrom the test information for Test 27).The system components tested in Tests 35 and 4are the same except for the right side cylinder. Then thedifference in flow rates must be the leakage in the rightside cylinder (take the test’ information for Test 4 awayfrom the test information for Test 35). Make acomparison of the test values with the values on Chart C.TroubleshootingPROBLEM: Leakage is in right steering cylinder.PROBABLE REASON:A. Piston seals are worn.B. Loose piston nut.C. Damage in cylinder assembly.RECOMMENDATION FOR ACTION:Disassemble and make repairs to the right steeringcylinder.PROBLEM: Leakage is in left steering cylinder.PROBABLE REASON:A. Piston seals are worn.B. Loose piston nut.C. Damage in cylinder assembly.RECOMMENDATION FOR ACTION:Disassemble and make repairs to the left steeringcylinder.2-124
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