4 AMP NON-REGULATED ALTERNATOR
The 4 ampere non-regulated alternator is entirely self-
contained. It incorporates a solid state rectifier and a
fuse, and uses less than 0.2 horsepower.
Fig. 198 - Alternator Assembly
CHECKING 4 AMP NON-REGULATED ALTERNATOR
Condition Found (Fuse Blown)
Check if battery polarity is correct: Negative (-) side of
battery should be grounded to engine or frame; positive
(+) side of battery to alternator output lead. Figure 199.
If reversed, correct and put in new fuse.
WHEN CHECKING ALTERNATOR COMPONENTS,
MAKE THE TESTS IN THE FOLLOWING SEQUENCE:
Testing for Short in Stator or Rectifier Disconnect
charging lead from battery, and connect small test lamp
in series between battery positive terminal and fuse cap,
as shown in Figure 200. DO NOT START ENGINE.
Test lamp should not light. If it does light, stator or
rectifier is defective. Unplug rectifier plug under blower
housing. See Figure 201. If test light goes out, rectifier
is shorted. If test light does not go out, stator is shorted.
Fig. 200 - Testing for Shorts
Condition Found (Battery Run Down)
Fig. 199 - Typical Wiring Installation