TM 5-5420-202-20-1
DETAILED TROUBLESHOOTING PROCEDURE
VEHICLE OPERATION HULL POWER
(Continued)
Symptom-31.1
26
Check CKT 1 at voltage regulator for 18 to 26
volts dc.
Second Technician (Operator's Station)
Disconnect three battery ground cable
assemblies (page 10-268).
First Technician (Commander's Station)
Connect front accessory harness 12326539
connector (CKT 2) to bulkhead disconnect
(page 10-269).
Second Technician (Operator's Station)
Connect three battery ground cables
assemblies (page 10-268).
First Technician (Commander's Station)
Connect "T" harness to voltage regulator.
Set MASTER BATTERY switch ON.
Set FUEL PUMPS switch ON.
Connect red probe of meter to "T" harness
socket E and black probe to socket C.
Check if meter indicates 18 to 26 volt dc.
Does meter indicate 18 to 26 volt dc?
27
Set FUEL PUMPS switch OFF.
Set MASTER BATTERY switch
OFF.
Disconnect "T" harness from
harness 12326542 connector (1,
1A, 532, 533, 534).
Disconnect "T" harness from
NO
voltage regulator.
Replace voltage regulator (page
10-1).
YES
Change 6
4-414.15
