TM 9-2320-387-24-2
18-3.1. 400-AMPERE DUAL VOLTAGE ALTERNATOR TESTING AND REPAIR (Cont'd)
NOTE
Complete disassembly is not required for static testing.
1.
Disconnect two cannon plugs (2) from voltage regulator (39).
2.
Remove three screws (37), two lockwashers (38), three washers (40), and voltage regulator (39) from
front housing (27). Discard lockwashers (38).
3.
Remove locknut (31), washer (32), pulley (30), and pulley bushing (33) from core and shaft
assembly (24). Discard locknut (31).
4.
Remove four screws (8), washers (9), and fan guard (10) from stator (20).
5.
Remove locknut (11), washer (12), fan (13), and spring ring (14) from core and shaft assembly (24).
Discard locknut (11).
6.
Scribe alignment marks on front housing (27), stator (20), and end housing (1).
7.
Remove six screws (7), lockwashers (6), and plate cover (15) from end housing (1). Discard
lockwashers (6).
NOTE
Prior to removal, tag leads for installation.
8.
Remove eight screws (5) and washers (4), and disconnect two field leads (19) and six phase
leads (22) from diodes in end housing (1).
9.
Remove nine locknuts (3) from front housing (27) and studs (21) of stator (20). Discard locknuts (3).
10.
Using a soft-faced mallet, tap from side-to-side to remove end housing (1) from stator (20).
11.
Remove six locknuts (17) from studs of core and shaft assembly (24). Discard locknuts (17).
12.
Using a gear puller, remove rotor (18) from core and shaft assembly (24).
13.
Using a gear puller, remove rear bearing (26), two seals (16), and spring ring (25) from core and
shaft assembly (24). Discard two seals (16).
14.
Remove six screws (7), lockwashers (6), and plate cover (28) from front housing (27). Discard
lockwashers (6).
NOTE
Prior to removal, tag leads for installation.
15.
Remove five screws (5) and washers (4), and disconnect two field leads (19) and three phase
leads (22) from diodes in front housing (27).
16.
Remove nine locknuts (3) from front housing (27) and studs (21) from stator (20). Discard
locknuts (3).
17.
Using a soft-faced mallet, tap from side-to-side to remove front housing (27) from stator (20).
18.
Remove shaft retaining ring (29) from core and shaft assembly (24).
19.
Using an arbor press, remove core and shaft assembly (24) from front housing (27).
20.
Remove front (34) and rear (36) retaining rings from front housing (27).
21.
Using an arbor press, remove bearing (35) from front housing (27).
22.
Remove six locknuts (17) from studs on core and shaft assembly (24). Discard locknuts (17).
23.
Using a gear puller, remove rotor (23) from core and shaft assembly (24).
b. Disassembly
18-10.8
Change 1
