TM 5-5420-278-24&P0061 000061 00-1/2 blankDIRECT SUPPORT TROUBLESHOOTINGIMPROVED RIBBON BRIDGE (IRB)RAMP BAY M16NSN 5420-01-470-5825 P/N 12478918;INTERIOR BAY M17NSN 5420-01-470-5824 P/N 12478919.INTRODUCTION TO TROUBLESHOOTINGGENERALa. This chapter provides the necessary troubleshooting procedures to diagnose mechanical andhydraulic malfunctions for the IRB ramp and interior bays.b. The symptom index has its own work package number and is used to identify the malfunction andlocate the troubleshooting procedure to diagnose the problem.c. Each troubleshooting procedure lists a description of the malfunction followed by a step or sequenceof steps to check the operation of a component. Then, in the order of probability, substeps instruct the userto determine if a condition exists through a check, inspection, or test, followed by the corrective actionrequired to solve the malfunction.d. Prior to performing any troubleshooting procedure, the following recommendations should beobserved:(1) Check the Equipment Inspection and Maintenance Worksheet, DA Form 2404, DA Form 5988-E,and Maintenance Request form, DA Form 5504, to find out why the equipment has been deadlined. Notethe operator’s and unit maintenance written descriptions of the problem and, whenever possible, ask theoperator and unit maintenance personnel; this can save time and effort in diagnosing the malfunction.(2) It is best not to assume the lower lever maintenance diagnosis is correct, even if it sounds accurate. Always perform the appropriate troubleshooting procedure(s) to verify the cause of the problem.Performing a corrective action without proof of a fault wastes time and increases the maintainability of theequipment.(3) Always first isolate the system where the malfunction occurs, then locate the component and perform the corrective action in the order listed.(4) Use approved mechanical and fluid repair practices provided in technical manuals, field manu-als, and technical bulletins listed in References (WP 0082 00) of this manual.(5) Use the approved special tools and test equipment to determine the known parameters for isolating a fault.END OF WORK PACKAGE
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