TM 5-2420-230-24-2
Alternator (013-001)
B3.9 and B5.9 Series Engines
Page 13-12
Section 13 - Electrical Equipment - Group 13
Alternator (013-001)
Initial Check (013-001-001)
The terminals on the alternator are shown in this illustra-
tion. The "R" (Delco) and "W" (Bosch) terminals provide
one-half system voltage and are used to operate accesso-
ries, such as the tachometer, on generator sets.
Trouble with the charging system can be indicated by the
indicator lamp or ammeter.
Abnormal Indicator Lamp Operation
Check the indicator lamp for normal operation as shown
below.
Engine
Switch
Lamp
Stopped
Off
Off
0
Stopped
On
On
-
Running
On
Off
+
Switch Off, Lamp On, Engine Stopped
Disconnect the lamp lead at the ignition switch. If the lamp
stays on, there is a short in a positive wire on the ignition
side of the lamp.
L-1270