Piper Arrow IV, Maintenance Manual

Page: 207 / 752

REMOVAL OF RECTIFIER AND HEATSINK ASSEMBLY. (Refer to Figure 24-10.)
—NOTE—
If negative heatsink rectifier straps are under the positive
heatsink straps, proceed to Step 2.
1. Remove the four screws which secure the negative rectifier and heatsink assembly to the rectifier end
shield and lift the heatsink assembly from the end shield.
2. Remove the nut and washer from the “BAT” terminal and remove the round plastic insulator.
3. Turn the rectifier end shield over and remove the nut and washer from the end shield stud.
4. Remove the capacitor attaching screw and lift out the capacitor, insulated washer and heatsink
assembly. Remove the round plastic insulator from the “BAT” terminal hole.
5. Remove the mica insulator from the end shield stud.
—NOTE—
If the negative heatsink rectifier straps were under the positive
heatsink rectifier straps, perform Step 1.
TESTING OF STATOR.
1. Remove the varnish from a spot on the stator frame.
2. Press a test probe firmly onto the bare spot.
3. Press the other test probe firmly to each of the three stator lead terminals one at a time. If the lamp
lights, the individual stator lead is grounded.
4. Press one of the test probes firmly on one stator lead and press the other test probe firmly onto each of
the other two stator leads one at a time. The test lamp should light. If the lamp fails to light the stator winding
is “open.”
5. Should the stator prove to be “grounded” or “open,” replace the stator.
REMOVAL OF PULLEY AND BEARING.
—NOTE—
The pulley and bearing are installed on the rotor shaft with an
interference fit. It is suggested that Puller Tool C-4068 be used to
reduce the possibility of damage being done to either the pulley or
bearing.
1. Remove the pulley with tool C-4068. (Refer to Figure 24-13.)
2. Remove the three bearing retainer screws.
3. Pry the drive end bearing retainer from the end shield with a screwdriver.
4. Support the end shield and tap the rotor shaft with a plastic hammer to separate the rotor from the end
shield.
5. Remove drive end ball bearing with Puller Tool C-4068. (Refer to Figure 24-14.)
6. The needle bearing in the rectifier end shield is a press fit. If necessary to remove the rectifier end
shield needle bearing, protect the end shield by supporting the shield with tool C-3925 when pressing the
bearing out with tool C-3770A.
24-32-11
EFFECTIVITY: Page 24-20
CHRYSLER ALTERNATOR Revised: July 13, 1983
1I15
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL