Piper ARROW III - Alternator Specifications; Slip Ring End Bearing Assembly; Testing Alternator

Figure 11-33. Slip Ring End Bearing Figure 11-34. Testing Alternator
Assembly
TABLE XI-II. ALTERNATOR SPECIFICATIONS
Aircraft Model PA-28R-201 PA-28R-201T
Alternator Model ALY 6422 ALX 9425A
Voltage 12-volts 12-volts
Rated Output 60 amperes 65 amperes
Ground Polarity Negative Negative
Rotation Bi-Directional Bi-Directional
Rotor
Current Draw (77°F) 3.0 to 3.3 amps @ 12.0-volts 2.4 to 4.0 amps @ 12.0-volts
Resistance (77°F) 3.6 to 3.9 ohms 3.0 to 5.0 ohms
Output Test (77°F)
Volts 12.8 14.2
Amperes Output 10.0 65.2
Field Amperes 3.15 3.45
Alternator RPM 1730 min. 5000 min.
Revised: 2/13/89
2H18
CHEROKEE ARROW III SERVICE MANUAL
ELECTRICAL SYSTEM