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.
Do not smoke, use open flame or allow sparks near batteries. Failure to observe these precautions could cause
serious injury to personnel.
Step 4
Check condition of batteries (1) as follows: Remove battery box cover (page 2-424). Set
multimeter to 20 vdc scale. Connect red test lead to battery positive (+) cable (2) and black test
lead to battery negative (-) cable (3). Check for 11 to 13 vdc on multimeter. Disconnect test leads.
a
If multimeter does not read 11 to 13 vdc, go to step 5.
b
If multimeter reads 11 to 13 vdc, go to step 6.
Step 5
Check two battery connector cables (4) for loose, corroded, frayed, or broken condition.
a
If battery connector cables (4) are loose, tighten nuts (5) using two 1/2-inch open-end
wrenches.
b
If battery cable terminals (6) are corroded, loosen nuts (5) using two 1/2-inch open-
end wrenches and pull battery cable terminals (6) off battery posts (7) using battery
terminal puller. Clean battery cable terminals (6) and battery posts (7) using battery
terminal cleaner. Place battery cable terminals (6) on battery posts (7) and tighten
nuts (5) using two 1/2-inch open-end wrenches.
c
If battery connector cables (4) are frayed, repair (page 2-424).
d
If battery connector cables (4) are broken, replace (pge 2-819).
e
If battery connector cables (4) are not loose, corroded, frayed, or broken, charge
batteries (1) and check output (TM 9-6140-200-14).
2-88
