TM 5-3805-254-20-1
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. ENGINE FAILS TO CRANK - CONTINUED.
WARNING
Although KEY SWITCH must be on and battery ground cable connected to test electrical circuit
voltage, turn off KEY SWITCH and disconnect battery ground cable before doing resistance tests
or replacing parts. This will keep you from getting shocked and prevent damage to parts and
equipment.
Step 12
Check ground wire (1) from solenoid (2) to starter motor (3) for loose, corroded, or broken
condition.
a
If ground wire (1) is loose at starter motor (3), tighten nut (4) using 3/4-inch box-end
wrench.
b
If ground wire (1) is loose at solenoid (2), tighten screw (5) using 1/4-inch flat-tip
screwdriver.
c
If terminal (6) is corroded at starter motor (3), unscrew and take off terminal (6) and
nut (4) using 314-inch box-end wrench. Clean ground wire (1) using wire brush.
Place terminal (6) in position and screw in and tighten nut (4) using 314-inch box-end
wrench.
d
If terminal (7) is corroded at solenoid (2), loosen screw (5) and take off terminal (7)
using 114-inch flat-tip screwdriver. Clean terminal (7) using wire brush. Place
terminal (7) in position and tighten screw (5) using 1/4-inch flat-tip screwdriver.
e.
If ground wire (1) is broken, replace (page 2896).
f.
If ground wire (1) is not loose, corroded, or broken, go to step 13.
Step 13
Set multimeter to 20 vdc scale. Connect red test lead to terminal (8) on solenoid (2) and black
test lead to ground. Have assistant rotate KEY SWITCH (9) clockwise to on position and press
ENGINE START button (10) for 5 seconds. Check for 11 to 13 vdc on multimeter. Have
assistant rotate KEY SWITCH (9) counterclockwise to off position. Disconnect test leads.
a
If multimeter does not read 11 to 13 vdc, go to step 14.
b
If multimeter reads 11 to 13 vdc, replace starter motor (3) (page 2-896).
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