ARMY TM 9-6115-642-24
AIR FORCE TO 35C2-3-455-12
MARINE CORPS TM 09247A/09248A-24/2
4-1-4 Assembly - Continued
d
Position pulley spacer (26 Figure 4-8), woodruff key (27). fan (25). and pulley (24) on rotor assembly
(28) shaft
e
Install lockwasher (23) and nut (22) on rotor assembly (28) shaft Torque nut 35 to 50 ft-lbs (47 to
68 Nm)
f
Position stator (21) in front housing (29) with stator leads at top and notches in lamination aligned
with bolt holes
g.
If removed. install retainer (20) in rear housing (19)
h
Positron rear housing (19) over slip rings of rotor assembly (28) with front and rear housing bolt holes
aligned. and stator leads extending through openings at top of rear housing (19)
i
Install thru-bolts (18) and tighten evenly Torque bolts 50 to 60 in-lbs (5.6 to 6.8 Nm)
j.
If necessary, remove thru-bolts (18) and rotate rear housing (19) and stator (21) to align housings
as match marked on disassembly Reinstall bolts and torque evenly 50 to 60 in-lbs (5.6 to 6.8 Nm).
k
Insert strap (13) of rectifier bridge (17) through slot in diode-trio (16) body. Bend strap (13) over B+
terminal and secure with cone nut (12)
I
Apply thin film of heat sink compound (Item 7, Appendix C) to back of rectifier bridge (17) and mating
area of rear housing (19)
m
Install diode-trio (16) and rectifier bridge (17) on rear housing (19) with bolts (15) and connect stator
leads with bolts (14) Remove tags
n
Install voltage regulator (10) to rear housing (19) with insulating washers (11) and bolts (9)
o
Install brush assembly (8) and strap (7) with nuts (6)
p
Position felt gasket (5) in back cover (4) and install back cover on rear housing (19) with bolts (3)
q
Install terminal washers (2) and terminal nuts (1)
r
Perform alternator performance test as follows
(1)
Mount alternator on test fixture capable of providing 5.000 alternator rpm
Make sure connections are tight to avoid possible damage to instruments,
alternator, or wiring due to short circuits
(2)
Set up test circuit as shown in Figure 4-9
NOTE
Carbon pile and ammeter must be capable of handling the alternator rated
output
(3)
Starting with the carbon pile off. slowly increase load while observing ammeter and maintaining
5000 rpm Increase load until an output voltage of 27.0 - 29.0 volts IS achieved Record the
output current at this point Acceptable minmum current IS 16.2 amperes at 705 to 805F (21
to 275C)
4-6.2 Change 4
