TM-9-2350-238-20-1

HULL AND RELATED COMPONENTS RECOVERY VEHICLE, FULL TRACKED: LIGHT, ARMORED, M578

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL

MAY 1994

TM-9-2350-238-20-1 - Page 213 of 1364

TM 9-2350-238-20-1

Step 4.

Place red probe in plug socket A. Place black probe in plug socket B. Set

MASTER switch ON. Set INST switch ON. If multimeter indicates about

24 volts, go to step 5. If multimeter indicates no voltage, replace warning

horn relay. Refer to page 2-637. Connect wiring harness. Set MASTER

switch OFF. Set INST switch OFF.

Step 5.

Disconnect lead 509H from warning horn. Place red probe in lead 509H.

Ground black probe. Start engine and run at 1000 to 1200 rpm. Check

voltage and stop engine.

If multimeter indicates about 24 volts, connect

lead 509H to warning horn and go to step 6. If multimeter indicates no

voltage, repair lead 509H between warning horn and relay. Refer to page

2-371.

2-187