TM9-2320-361-34 Table 2-1. Mechanical Troubleshooting (Contd). MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION ● ● OUTRIGGERS WARNING Hydraulic fluid is under high pressure. When additional compo- nents are required to perform troubleshooting, use equally rated hydraulic components. Failure to use correctly rated components may result in component failure and injury to personnel. Eye protection is required when performing hydraulic systems checks. Failure to do this may result in fluid contacting-eyes and injury to personnel. NOTE Tag hydraulic hoses for installation. 65. OUTRIGGERS INOPERATIVE Step 1. Step 2. Step 3. Step 4. Check hydraulic pump. Remove hydraulic hose from tee fitting below check valve. Install test hydraulic tee into check valve hydraulic tee and install high pressure gage into test tee. Operate outrigger control lever (TM9-2320-361-10). a. If pressure gage reading is uneven, replace regulator valve (para. 15-46). b. If pressure gage reading is low and uneven, replace hydraulic pump (para. 15-45). Remove test hydraulic tee and high pressure gage. Install hydraulic hose in check valve tee. Check control valve. Remove four hydraulic hoses from control valve. Install one tee in each of four open ports of control valve. Install one pressure gage in each of four tees. Install hydraulic hoses in correct tee on proper port of control valve (para. 15-46). Operate earth boring machine hydraulic pump and outrigger control to extend outriggers (TM9-2320-361-10). Observe pressure gages readings. a. If pressure reading on all gages decreases, replace control valve (para. 15-46). b. If pressure reading on one or more gages is normal and even, repair hydraulic cylinder(s) as appropriate (para. 15-48). END OF TESTING! 66. OUTRIGGERS OPERATE UNEVENLY Step 1. Perform troubleshooting malfunction 65, steps 3 and 4. Step 2. Replace or repair hydraulic cylinders (para. 15-48). END OF TESTING! 67. OUTRIGGERS WILL NOT HOLD IN EXTENDED POSITION Complete troubleshooting malfunction 65, steps 3 and 4. END OF TESTING! 2-29