TM 5-3810-300-24&P-3
13.1
ENGINE OPERATING INSTRUCTIONS
flow of oil to all bearings at the initial engine start-up.
PREPARATION FOR STARTING ENGINE
The oil supply line should be attached to the engine so
FIRST TIME
that oil under pressure is supplied to the main oil gallery.
Before starting an engine for the first time, carefully read
With the oil pan dry, use the prelubricator to prime the
and follow the instructions in Sections 13 and 14 of this
engine with sufficient oil to reach all bearing surfaces.
manual. Attempting to run the engine before studying
Use heavy-duty lubricating oil as specified under
these instructions may result in serious damage to the
Lubricating Oil Specifications in Section 13.3. Then
engine.
remove the dipstick, wipe it with a clean cloth, insert and
remove it again to check the oil level in the oil pan. Add
NOTE: When preparing to start a new or
sufficient oil, if necessary, to bring it to the full mark on
overhauled engine or an engine which has been
the dipstick. Do not overfill.
in storage, perform all of the operations listed
below. Before a routine start (at each shift), see
If a pressure prelubricator is not available, fill the
Daily Operations in the Lubrication and
crankcase to the proper level with heavy-duty lubricating
Preventive Maintenance Chart, Section 15.1.
oil as specified under Lubricating Oil Specifications in
Section 13.3. Then pre-lubricate the upper engine parts
Cooling System
by removing the valve rocker cover and pouring
lubricating oil, of the same grade and viscosity as used in
Install all of the drain cocks or plugs in the cooling
the crankcase, over the rocker arms.
system (drain cocks are removed for shipping).
Open the cooling system vents, if the engine is so
equipped.
Air Cleaner
Remove the filler cap and fill the cooling system with
If the engine is equipped with oil bath air cleaners, fill the
clean, soft water or a protective solution consisting of
air cleaner oil cups to the proper level with clean engine
high boiling point type antifreeze, if the engine will be
oil. Do not overfill.
exposed to freezing temperatures (refer to Engine
Coolant in Section 13.3). Keep the liquid level about two
Transmission
inches below the filler neck to allow for fluid expansion.
Check the oil level and, if necessary, add sufficient oil to
Use a quality rust inhibitor if only water is used in the
bring it to the proper level.
cooling system.
Fuel System
Close the vents, if used, after filling the cooling system.
Fill the fuel tank with the fuel specified under Diesel Fuel
Lubrication System
Oil Specifications in Section 13.3. If the unit is equipped
with a fuel valve, it must be opened.
The lubricating oil film on the rotating parts and bearings
of a new or overhauled engine, or one which has been in
To ensure prompt starting, fill the fuel system between
storage, may be insufficient for proper lubrication when
the pump and the fuel return manifold with fuel. If the
the engine is started for the first time.
engine has been out of service for a considerable
It is recommended that the engine lubricating system be
charged with a pressure prelubricator, set to supply a
minimum of 25 psi oil pressure, to ensure an immediate
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