Piper COMANCHE PA-24-180 Service Manual page 572

FIGURE 9-27i. INSTALLATION OF FIGURE 9-27i. INSTALLATION OF
BEARING RECTIFIER
9-61h. Assembly Of Alternator.
a. Press the ball bearing into the drive end head using a flat block approximately two inch
square so that the pressure is exerted on the outer race of the bearing. Istall the retainer place.
With the snap ring and retainer cup in place on the rotor shaft, use a tool that fits over the shaft
and against the inner bearing race, and press until the inner bearing race is against the snap ring
retainer cup. (Refer to Figure 9-27i.)
b. Carefully install the rectifiers in the slip rnng end head or rectifier mounting plate by
^
supporting the unit and using the special tools illustrated in Figure 9-27j.
CAUTION
Use an arbor press, do not hammer. Reconnect the stator leads
to the rectifiers. When soldering these connections, use pliers
as a heat dam on the lead between the solder joint and the recti-
fier. Too much heat will damage the rectifiers.
c. Reassemble the rectifier mounting plate studs and insulators, making sure they are in the
correct order. (Refer to Figure 9-27k.)
d. After the slip ring end head is completely assembled, the stator and rectifier leads must
be secured to the rectifier mounting plate with epoxy. Make sure the stator leads are positioned
so that they do not interfere with the rotor.
e. Install the slip nng end bearing and oil seal. Make sure the lip of the oil seal is toward
the bearing. Correct assembly of bearing, seal, inner race and spacer is shown in Figure 9-271.
f. Assemble the alternator and install the through bolts. Spin the rotor to make sure there
is no mechanical interference. Torque the through bolts to 30 to 35 inch pounds. Safety wire
ELECTRICAL SYSTEM
ISSUED: 818f/2
PIPER COMANCHE SERVICE MANUAL
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