Piper Dakota Maintenance Manual page 207

2. Position rectifier end shield bearing on the base of tool C-420l. Place alternator end shield on top of
bearing so that it is properly aligned. With top part of tool C-4201 placed on end shield, press into
place until it bottoms against it. (Refer to figure 24-l9.)
New bearings are pre-lubricated. Additional lubrication is not
required.
3. Insert drive end bearing in drive end shield and install bearing retainer plate to hold bearing in place.
Install all three bearing retainer screws loosely, then tighten to a torque of 25 to 45 inch-pounds.
4. Position bearing and drive end shield on rotor shaft and while supporting base of rotor shaft, press
bearing end shield into position on rotor shaft with an arbor press and tool C-3858. (Refer to figure 24-
20.)
Ensure bearing is installed squarely at installation or damage to
bearing will result. Press bearing on rotor shaft until bearing
contacts shoulder on rotor shaft fan hub.
5. Install pulley on rotor shaft. Rotor shaft must be supported in a manner which will direct all pressing
force on pulley hub and rotor shaft. (Refer to figure 24-2l.)
Press pulley onto rotor shaft until pulley contacts inner race of
drive end bearing. Do not exceed 6800 pounds pressure. Do not
hammer.
6. Install mica insulator on heatsink mounting stud in end shield.
7. Install round plastic insulator, flat face up, in battery stud hole in end shield. (Refer to figure 24-22.)
8. Install positive heatsink assembly by placing battery terminal through round plastic insulator and
capacitor end over heatsink mounting stud. Ensure three rectifier straps are over studs on terminal
block. (Refer to figure 24-23.)
9. Install capacitor terminal over heatsink stud and install capacitor insulator making certain insulator
seats properly in capacitor terminal and heatsink hole.
On airplanes with s/n PA - 2 8 - 7 9 11001 through PA - 2 8 - 8 2 11 0 3 4
capacitor is located on aft alternator bracket per SPL366A and
Kit 764 347v. This kit when installed will provide improved
service life of alternator bracketry and filter capacitor.
l0. Secure capacitor bracket to end shield with attachment screw and tighten screw to a torque of 30 to 40
inch-pounds.
11. Install positive heatsink nut and lockwasher and tighten to a torque of 20 to 30 inch-pounds. (Refer to
figure 24-24.)
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
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—CAUTION—
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24 - 32 - 00
Page - 24 - 23
Reissued: August 1, 1986