
11-28. REMOVAL OF BATTERY BOX. (Refer to Figure 11-17.).
a. Remove battery according to instructions in Paragraph 11-21.
b. Remove the two bolts and nuts securing the Master Contactor to the side of the battery box. Lay
the.master contactor aside.
c. Remove the four mounting bolts securing the battery box to the airframe. These are located on the four
corners at the bottom of the box.
d. Remove the battery box from the airplane.
11-29. INSTALLATION OF BATTERY BOX.
a. Position the battery box into place.
b. Secure the battery box with the four bolts previously removed.
c. Position the master contactor on the side of the battery box and secure with the two bolts and nuts
previously removed.
d. Install the battery according to instructions in Paragraph 11-22.
11-30. BATTERY BOX CORROSION PREVENTION. The battery should be checked for spilled electrolyte or
corrosion at each 5O hour inspection or at least every 30 days, whichever comes first. Should corrosion be found
in the box, on the terminals or around the battery. the battery should be removed and both the box and battery
cleaned by the following procedure:
a. Remove the box drain cap from the underside of the fuselage and drain off any electrolyte that may have
overflowed into the box.
b. Clean the battery and the box. Corrosion effects may be neutralized by applying a solution of baking soda
and water mixed to a consistency of thin cream. The application of this mixture should be applied until all
bubbling action has ceased.
—CAUTION—
Do not allow soda solution to enter battery.
c. Rinse the battery and box with clean water and dry.
d. Place the cap over the battery box drain.
e. Reinstall battery. (Refer to Paragraph 11-22.)
11-31. ALTERNATOR CONTROL
11-32. CHECKING ALTERNATOR CONTROL. This unit contains both a solid state voltage regulator and
overvoltage cutout. the system is tested by checking the alternator for proper output.
11-33. REMOVAL OF ALTERNATOR CONTROL
a. Disconnect battery
b. Disconnect red wire to master switch.
c. Disconnect blue wire to field terminal on alternator.
d. Remove mounting screws.
e. Remove unit.
PIPER AIRCRAFT
PA-28-161 CADET
AIRPLANE MAINTENANCE MANUAL
Issued: FEBRUARY. 28, 1989
ELECTRICAL SYSTEM
2D13