TM-5-4310-389-14
4-22. ALTERNATOR (ENGINE).
DESCRIPTION
This task covers: Repair. Test.
INITIAL SETUP
Tools:
Equipment conditions:
General Mechanic Tool Kit
1. Alternator removed from engine
Diagonal pliers
(paragraph 3-38)
Ohmmeter
2. Electrical connections secured
Bearing puller
(paragraph 3-38)
Materials/parts:
Inhibited Methyl Chloroform
(O-T620)
REPAIR
TEST
a.
Clamp pulley (3) in a vise using an old oversize V-belt to prevent damage to the metal edges.
b.
Remove pulley mounting nut (1) from shaft and split lock washer (2). Remove pulley and spacer (4) from alternator
(figure 4-64).
c.
Using diagonal pliers, remove Woodruff key (11), then remove fan baffle (5), fan (6), and fan spacer (7).
d.
Inspect fan for bent, cracked or broken fins noting condition of the mounting hole. If it is worn, replace the fan.
e.
Inspect pulley for worn drive surfaces. Note condition of key groove; check bore for wear. Replace, if required.
f.
Disassemble stator. Using a wooden wedge and a screwdriver, remove four thru-bolts (18). Pry the front and rear
housings apart so that stator (15) and rear housing (17) remain as an assembly and the rotor (12) and front housing
(8) are another assembly.
g.
Separate stator and rear housing.
4-91
