TM-9-2920-258-30-P
ALTERNATOR, 180 AMPERES, MODEL 5520AB
TECHNICAL MANUAL; DIRECT SUPPORT MAINTENANCE MANUAL
APRIL 1989
TM-9-2920-258-30-P - Page 9 of 76
TM 9-2920-258-30&P
CHAPTER 2
ALTERNATOR TROUBLESHOOTING
SECTION I
REPAIR PARTS, SPECIAL TOOLS, TEST MEASUREMENT AND
DIAGNOSTIC EQUIPMENT (TMDE) AND SUPPORT EQUIPMENT
2-1
COMMON TOOLS AND EQUIPMENT
For authorized common tools and equipment, refer to the Modified Table of Organization and
Equipment (MTOE) applicable to your unit.
2-2
SPECIAL TOOLS
500-amp test stand.
2-3
REPAIR PARTS
Repair parts are listed in Appendix B of this manual.
SECTION II
TROUBLESHOOTIN G
2-4
PURPOSE
This chapter contains detailed troubleshooting information and procedures for locating and
correcting malfunctions in the various component parts of the Alternator.
2-5
TROUBLESHOOTING PROCEDURES
a After the Alternator has been received, inspect the Alternator as follows:
1 Check if spline shaft turns. If it does not, check if drive end housing has been
seated correctly. Check bearings and make sure there is no obstruction between
spline shaft and air shroud.
2 Grasp spline shaft and see if it can be moved up or down, or to either side. If
spline shaft does move, remove and replace worn components as required (ref
Chapter 3, Disassembly Step 6).
3 Check pins that they are not burned, bent or broken, or pushed back into jumper
connector (ref Chapter 3, Disassembly Step 19). Replace if burned, bent or
broken, and pull back into proper position if pushed back.
2-1
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