After the Final Run-In and before the
side of the turbocharger. The differ-
Engine Test Report is completed, a final
ence between the two readings, with and
inspection must be made. This in-
without the air cleaner and ducting, is
spection will provide final assurance that
the actual restriction caused by the air
the engine is in proper working order,
cleaner and ducting.
During this inspection, the engine is also
made ready for any brief delay in deliv-
Check the normal air intake vacuum at
ery or installation which may occur.
various speeds (at no-load) and compare
This is accomplished by rustproofing the
the results with the Engine Operating
fuel system, and adding a rust inhibitor
Conditions in Subsection 11A. Record
into the cooling system (see Section 3 for
these readings on the Engine Test Re-
coolant specifications). The lubricating
port.
oil filters should also be changed.
Check the exhaust back pressure in the
exhaust piping 6" to 12" from the turbine
ENGING OPERATING INSTRUCTIONS
outlet. The tapped hole must be in a
comparatively straight area for an acCU-
rate measurement. The manometer check
Preparation For Starting Engine First
should produce a reading in inches that
Time
is below the Maximum Exhaust Back
Pressure for the engine (refer to Sub-
GENERAL. Before starting an engine for
section 11A).
the first time, carefully read and follow
the instructions in this subsection. At-
Turbocharger compressor outlet pressure
tempting to run the engine before study-
and turbine inlet pressures are taken at
ing these instructions may result in
full-load and no-load speeds.
serious damage to the engine.
Refer to the Final Engine Run-In Sched-
NOTE
ule and determine the maximum rated
brake horsepower and the full-load speed
When preparing to start a new or
to be used during the Final Run-In.
overhauled engine or an engine
Apply the load thus determined to the
which has been in storage, per-
dynamometer. The engine should be run
form all of the operations listed be-
at this speed and load for 1.2 hour.
low. Before a routine start (at
While making the Final Run-In, the en-
each shift), see Daily Operations
gine should develop, within 5%, the
in the operators manual.
maximum rated brake horsepower indi-
cated
for
the
speed
at
which
it
is
operating. If this brake horsepower is
COOLING SYSTEM. Install all of the
not developed, the cause should be de-
drain cocks or plugs in the cooling sys-
termined and corrections made.
tem (drain cocks are removed for ship-
ping).
When the above conditions have been
met, adjust the maximum no-load speed
Remove the fill cap and fill the cooling
to confirm with that specified for the
system with a coolant specified in Section
particular engine. This speed may be ei-
3. Keep the liquid level about two inch-
ther higher or lower than the maximum
es below the filler neck to allow for fluid
speed used during the Basic Run-In.
expansion.
This will ordinarily require a governor
adjustment.
LUBRICATION SYSTEM. The lubricating
oil film on the rotating parts and bear-
All information required in Section "E",
ings of a new or overhauled engine, or
Final Run-In, of the Engine Test Report
one which has been in storage, may be
should be determined and filled in. Af-
insufficient for proper lubrication when
ter the prescribed time for the Final
the engine is started for the first time.
Run-In has elapsed, remove the load
from the dynamometer and reduce the
It is recommended that the engine lubri-
engine speed gradually to idle speed and
cating system be charged with a pres-
then stop the engine. The Final Run-In
sure prelubricator, set to supply a
i s complete.
minimum
or
25
psi
(172
kPa)
oil
pressure, to ensure an immediate flow of
6. Inspection After Final Run-In
oil to all bearings at the initial engine
