TM 5-3805-262-342-16. HYDRAULIC SYSTEM TROUBLESHOOTING (CONT)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION5. HYDRAULIC SYSTEM OIL TOO HOT.Step 1.Check control valve neutral pressure (page 3-621).a. If neutral pressure is not less than 500 psi, go to step 2below.b. If neutral pressure is less than 500 psi, go to step 4 below.Step 2.With engine operating at full throttle, move each control lever asmall distance and check if pressure indication decreases.a. If pressure indication decreases, replace control valve (page3-647) .b. If pressure indication does not decrease, go to step 3 below.Step 3.Turn off engine.Drain hydraulic reservoir and replace hydraulic filter (refer to TM5-3805-262-20) .Repeat control valve neutral pressure check (page 3-621).If neutral pressure is still not less than 500 psi, turn off en-gine. Remove control valve hydraulic return lines and check fordirt or other obstructions (refer to TM 5-3805-262-20).Step 4.Check main relief valve pressure setting (page 3-615).a. If main relief valve pressure setting is not 2300 ±50 psi,adjust (page 3-617).b. If main relief valve pressure setting is okay, go to step 5below.Step 5.Check steering relief valve pressure setting (page 3-505).a. If pressure reading is not between 2400 to 2600 psi, replaceflow control valve (page 3-566).b. If pressure reading is between 2400 to 2600 psi, go to step 6below.2-125
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