TM 5-3810-306-20TABLE 3-1. ORGANIZATIONAL TROUBLESHOOTING (CONTD)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION58. BOOM SWING OPERATION ERRATIC IN EITHER DIRECTIONStep 1.Defective main hydraulic relief valve.a. Check relief valve adjustment. (Refer to page 16-54.)If OK, do Step 2.b. Contact Direct Support Maintenance to replace reliefvalve.Step 2.Insufficient lubricant on swing bearing.a. Lubricate bearing. (Refer to LO 5-3810-306-12).Step 3.Restricted or partly clogged hydraulic hose or fitting.a. Remove and inspect hydraulic hoses and fittings. IfOK, do Step 4.b. Replace hose or fittings. (Refer to page 16-18.)Step 4.Pump cavitation in swing section.a. Retighten suction hose or replace any damaged fitting.WARNINGDo not torque turntable bolt two times without replacing thebolts. Failure to follow this procedure could result in aserious accident.Step 5.Improperly torqued turntable bolts.a. Contact Direct Support Maintenance to check torque onturntable bolts. If OK, do Step 6.Step 6.Defective swing system.a. Contact Direct Support Maintenance.3-46
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