TM 9-6115-660-13&P5-14 RESISTORS R1-R3 MAINTENANCE.This task covers:a.Testc. Installationb. RemovalINITIALSETUPToolsEquipmentConditionsTool Kit, General Mechanic’sReference(item 1, appendix B)Multimeter (item 3, apendix B)Both generator sets shut down; paragraphSoldering Gun (item 3, apendix B)2-5.3.3. Trailer handbrakes set, front supportleg/landing lowered, and rear leveling-supportMaterials/Partsjack lowered; paragraph 2-3.2.1. Switch boxcover open.Lock washersSolderTEST1.2.3.4.NOTEIf testing R1 or R2, step 1. must be performed.Remove four screws (1, figure 5-19), lock washers (2), and flat washers (3) and invert relay boardassembly (4).Measure resistance of R1 (5) or R2 (6) for 246.5-251.5 ohms. If resistance is out of tolerance, replaceresistor.Measure resistance of R3 (11) for 2465-2515 ohms. If resistance is out of tolerance, replace resistor.If resistors R1 and R2 are within tolerance, place relay board assembly in position and secure with flatwashers (3), lock washers (2), and screws (1)REMOVALNOTEIf removing R1 or R2, step 1. must be performed.1. Remove four screws (1), lock washers (2), and flat washers (3) and invert relay2. Tag and unsolder leads from resistor.board assembly (4).3. Remove two nuts (9), lock washers (8), flat washers (7), screws (10), and resistor (5, 6, or 11).5-33
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