CHAPTER 5 - INSPECTION & TESTING
5.1 General
This chapter outlines the tests and inspections required to determine the condition of the alternator removed for
scheduled and unscheduled maintenance. Refer to the procedures given in the TROUBLESHOOTING Chapter
prior to applying any test for maintenance.
Where applicable, components called out this section will correspond to the item number listed in Chapter 6,
MAINTENANCE.
A. Equipment
(1) Standard tools
- Standard mechanic’s handtools.
- Torque wrench ounce-inch (gram-centimeter).
- Torque wrench pound-foot (newton-meter).
- Safety gloves.
- Protective goggles (eye protection).
- Ear Plugs (hearing protection).
- Safety shoes.
- Protective cotton apron.
- Air compressor (shop air).
(2) Special tools
The following are only requred if alternator was removed for bench testing
- Alternator test bench (see Fig. 5.2)
- 24v aircraft battery
- Pulley (optional, see Fig. 5.1)
- Belt tension gauge, universal
- Alternator mounting fixture (5.3)
(3) Instruments
- A multimeter, (Simpson 260 or Triplett 630) or equivalent (accuracy 1%)
- An Oscilloscope x100, x1000 range. (optional)
- Alternator test meter, Amtest Model 648 (optional)
- Optical tachometer (optional)
- Variable DC load bank (3kW minimum)
Aircraft Alternator
Maintenance Manual
ES1031
24-30-01
Rev. B: 20 Apr. 2022
Page: 5-1
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