Installation Of Drive End Head; Installation Of Rectifier - Piper ARROW III Service Manual

Figure 11-30. Installation of Drive End Head
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 point and the rectifier. 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 11-32.)
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 ring end bearing and oil seal. Make sure the lip of the oil seal is toward the bearing. Stake
the seal in place. Correct assembly of bearing, seal, inner race and spacer as shown in Figure 11 - 3 3 .
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 should be
installed after the unit has been bench tested for output.
g. On PA-28R-201, install spacer, woodruff key, fan, pulley, lockwasher and nut. Torque the nut to 35
foot pounds, using a strap wrench to hold the pulley.
h. Install the brush and holder assembly and retaining screws. Spin the rotor and check for interference
between the brush holder and rotor. Check between the field terminal and ground with an ohmmeter.
The ohmmeter must indicate the amount of rotor resistance listed with paragraph 11-41, Alternator
Service Test Specifications.
Revised: 2/13/89
CHEROKEE ARROW III SERVICE MANUAL
CAUTION
2H16
Figure 11-31. Installation of Rectifier
ELECTRICAL SYSTEM