TM 5-3810-300-24&P-3
15.2 Trouble Shooting (Engine)
Chart 2
HARD STARTING
SUGGESTED REMEDY
1
Refer to Items 2, 3 and 5 and perform the
7
To check for air leaks, flow obstruction, faulty fuel
operations listed.
pump or faulty installation, consult the No Fuel or
Insufficient Fuel chart.
2
Replace the starting motor switch.
8
Check for bind in the governor-to-injector linkage.
3
Hand crank the engine at least one complete
revolution. If the engine cannot be rotated a complete
Readjust the governor and injector controls if necessary.
revolution, internal damage is indicated and the engine
must be disassembled to ascertain the extent of damage
9
Remove the cylinder head and recondition the
and the cause.
exhaust valves.
4
Refer to Lubricating Oil Specifications in Section
10 Remove the air box covers and inspect the
13.3 for the recommended grade of oil.
compression rings through the ports in the cylinder
liners.. Overhaul the cylinder assemblies if the rings are
5
Recharge the battery if a light load test indicates low
badly worn or broken.
or no voltage. Replace the battery if it is damaged or will
not hold a charge.
11 To check for compression gasket leakage, remove
the coolant filler cap and operate the engine. A steady
Replace terminals that are damaged or corroded.
flow of gases from the coolant filler indicates either a
cylinder head gasket is damaged or the cylinder head is
At low ambient temperatures, use of a starting aid will
cracked Remove the cylinder head and replace the
keep the battery fully charged by reducing the cranking
gaskets or cylinder head.
time.
12
Adjust the exhaust valve clearance.
6
Tighten the starter connections. Inspect the starter
commutator and brushes for wear. Replace the brushes
13 Inspect the blower drive shaft and drive coupling.
if badly worn and overhaul the starting motor if the
Replace damaged parts.
commutator is damaged.
14 Operate the starting aid according
to
the
instructions under Cold Weather Starting Aids.
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