TM 10-3930-641-20
ELECTRICAL SYSTEMS TROUBLESHOOTING (CONT)
(Sheet 2 of 2)
PROBLEM NO. 29 (CONT)
NOTE 1: If service meter works (allow 1-2 minutes for warm up) when PANEL TEST switch is ON (POWER switch ON, engine not running) trouble
NOTE 2: Voltage is checked to ground, see page 2-57.
ANSWER
YES
NO
REMARKS
STEP
QUESTION OR INSTRUCTION
1
Gain access to rear of LHIP. START engine. Is battery voltage
2
present at hourmeter where O/LT BL wire connects.
4
Is BK wire properly grounded?
3
2
--
--
3
Repair/replace 16 gage BK wire.
--
--
4
Replace service meter. POWER switch OFF.
Turn POWER switch to OFF. Place transmission selector in
7
6
5
FORWARD or REVERSE. Does operator warning horn work?
8
Gain access to engine relay panel. START engine. Is battery
7
6
voltage present at alternator relay (4, page 2-70) terminal 3,
where O/LT BL wire connects?
--
O/LT BL 16 gage wire from Y connector near transmission to --
7
service meter is open.
--
-
8
End
2-142