Quantcast Section II.  MAINTENANCE PROCEDURES - TM-9-2815-260-24_92

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ARMY TM 9-2815-260-24 AIR FORCE TO 38G1-126-2 MARINE CORPS TM 09244A/09245A-24 4-14 Section II.  MAINTENANCE PROCEDURES 4.2. GENERAL. This section contains direct support maintenance procedures.  Deficiencies noted during inspection which are beyond the scope of direct support level maintenance shall be reported to the next higher level of maintenance. 4.3. ELECTRICAL SYSTEM MAINTENANCE. 4.3.1. BATTERY CHARGING ALTERNATOR. a.     Test. (1) Remove battery charging alternator, refer to paragraph 3.9.1. (2) Mount battery charging alternator on test fixture capable of providing 5000 alternator rpm. CAUTION Make sure connections are tight to avoid possible damage to instruments, battery charging alternator, or wiring due to short circuits. (3) Set up circuit as shown in Figure 4-1. NOTE Carbon pile and ammeter must be capable of handling the alternator rated output. (4) Starting with the carbon pile off, slowly increase load while observing ammeter and maintaining 5000 rpm.  Increase load until an output voltage of 27.0 to 29.0 VDC is achieved.  Record the output current at this point.  Acceptable current is 38 amperes at 70 to 80°F (21.1 to 26.7°C). FIGURE 4-1.  BATTERY CHARGING ALTERNATOR TEST CIRCUIT


 


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