TEST OR INSPECTION
1. WILL NOT CRANK WHEN POWER SWITCH IS ON START
Step 1. Check main disconnect switch.
Turn disconnect switch to ON position. (See TM 10-3930-641-10.)
Step 2. Check battery output.
a. Charge battery.
b. Replace faulty batteries. (See TM 10-3930-641-20.)
Replace solenoid. (See TM 10-3930-641-20.)
Step 4. Inspect starting motor. Look for discolored coils.
Step 5. Test wiring circuit.
Repair/replace as necessary. (See TM 10-3930-641-20.)
If preceding steps do not solve problem, disconnect upper drive shaft. Then try to start engine. If engine still doesn't start, go to Step 6.
Step 6. Determine if problem is internal.
a. Remove fuel injection nozzles and check for coolant in cylinders.
Replace gaskets whether head is cracked or not.
b. Remove engine and disassemble as required. (See Chapter 3.)
Check the following for possible causes:
Bearing seizure, rod or main.
Replace component(s) that have failed.