TM 5-3805-262-20
3-33. STARTING SYSTEM TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. STARTER CRANKS SLOWLY (UNDER 200 RPM) (Cont).
Step 11.
Step 12.
(Cont).
Press and release TEST button.
Turn ignition key switch to on position.
VTM display should indicate over 18 volts.
Crank engine and watch VTM display.
VTM display should indicate over 18 volts.
Turn ignition key switch to off position.
a. If VTM display is over 18 volts, go to step 13 below.
b. If VTM display is zero when cranking engine, loader 30 ampere
c i r c u i t b r e a k e r i s b l o w i n g . S h o r t c i r c u i t i s p r o b a b l y i n s t a r t er
relay. Go to step 12 below.
Disconnect wires from starter relay and check resistance between two
c e n t e r t e r m i n a l s .
Resistance of starter relay coil should be 20 to 40 ohms.
a .
b .
Replace starter relay (page 5-26) if resistance is not 20 to 40
ohms.
If starter relay is okay, refer to wiring diagram (pages FO-7
and FO-9) and check for short circuit in wires between loader 30
ampere circuit breaker and starter relay.
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