TM 5-3805-262-20
3-32. CHARGING SYSTEM TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. ALTERNATOR NOT CHARGING BATTERIES.
Step 1.
Open radiator grille at rear of loader.
Connect STE/ICE power cable W5 connector P1 to VTM J1.
Check that VTM PUSH ON/PULL OFF switch is in OFF position.
Connect power cable W5 red clip lead to loader battery positive post
and black clip lead to loader battery negative post.
Remove engine left side panels (page 9-14).
Loosen and disconnect tachometer cable nut from tachometer drive.
Install STE/ICE pulse tachometer in loader tachometer drive.
Connect transducer cable W4 connector P1 to VTM J3.
Connect transducer cable W4 connector P2 to pulse tachometer.
Do STE/ICE confidence test (TM 9-4910-571-12&P).
Dial 01 into TEST SELECT.
Press and release TEST.
When PASS appears on VTM display, dial 67 into TEST SELECT.
Press and release TEST.
Start engine and depress accelerator to obtain 1700 to 1900 rpm. VTM
will alternately display engine rpm and battery voltage.
Turn all loader driving lamps, flood lights, and accessories on to
load charging system.
VTM display should indicate 26.5 to 31 volts.
Turn off loader driving lamps, flood lights, accessories, and en-
g i n e.
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