TM-9-2350-311-20-1

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS

AUGUST 1994

  TM-9-2350-311-20-1 - Page 270 of 1275

TM 9-2350-311-20-1
3-3
TROUBLESHOOTING CHART —
CONTINUED
n. ALTERNATOR CIRCUIT (M109A4/M109A5) —
ALTERNATOR FAILS TO CHARGE BATTERIES; GAGE
CONTINUED
INDICATION: NOT CHARGING, UNSTEADY OR
INACCURATE READING — CONTINUED
CONTINUED FROM STEP A
[
1. Disconnect lead 40A from BATTERY
indicator.
2. Place red lead of multimeter in lead 40A and
black lead to ground.
3. Turn MASTER switch ON and check for
voltage.
4. Turn MASTER switch OFF.
Is voltage present?
I
17)
Replace BATTERY indicator (para 8-
1. Reconnect lead 40A to BATTERY indicator.
2.
Disconnect
lead 27 from circuit breaker
output.
4. Place red lead of multimeter in circuit
breaker output and black lead to ground.
5. Turn MASTER switch ON and check for
voltage.
6. Turn MASTER switch OFF.
Is voltage present?
CIRCUIT BREAKER
CONTINUED ON NEXT PAGE
3-170


Back to Top