Operation and maintenance manual

76 SEBU7833-03
Maintenance Section
Starting Motor - Inspect
Environmental Factors
Ambient temper
atures – The engine may be
exposed to extended operation in extremely
cold environments or hot environments. Valve
components ca
n be damaged by carbon buildup if
the engine is frequently started and stopped in very
cold temperatures. Extremely hot intake air reduces
engine perfo
rmance.
Quality of the air – The engine may be exposed
to extended o
peration in an environment that is
dirty or dusty, unless the equipment is cleaned
regularly. Mud, dirt and dust can encase components.
Maintenanc
e can be very difficult. The buildup can
contain corrosive chemicals.
Buildup – Co
mpounds, elements, corrosive
chemicals and salt can damage some components.
Altitude – P
roblems can arise when the engine is
operated at altitudes that are higher than the intended
settings for that application. Necessary adjustments
should be m
ade.
Incorrect
Operating P rocedures
•
Extended operation at low idle
•
Frequent hot shutdowns
•
Operating
at excessive loads
•
Operating at excessive speeds
•
Operating outside the intended application
Incorrect Maintenance Procedures
•
Extending
the maintenance intervals
•
Failure to use recommended fuel, lubricants and
coolant/a
ntifreeze
i02177969
Starting M
otor - Inspect
Perkins recommends a scheduled inspection of the
starting motor. If the starting motor fails, the engine
may not st
art in an emergency situation.
Check the start
ing motor for correct operation. Check
the electrical connections and clean the electrical
connections. Refer to the Systems Operation, Testing
and Adjusting
Manual, “Electric Starting System -
Test” for more information on the checking procedure
and for specifications or consult your Perkins dealer
or your Perki
ns distributor for assistance.
i02184788
Turbocha rger - Insp ect
(If Equipped)
A regular visual inspection of the turbocharger is
recommended. Any fumes from the crankcase are
filtered through the air inlet system. Therefore,
by-products from oil and from combustion can collect
in the turbocharger compressor housing. Over time,
this buildup can contribute to loss of engine power,
increased black smoke and overall loss of engine
efficiency.
If the turbocharger fails during engine operation,
damage to the turbocharger compressor wheel
and/or to the engine may occur. Damage to the
turbocharger compressor wheel can cause additional
damage to the pistons, the valves, and the cylinder
head.
NOTICE
Turbocharger bearing failures can cause large quanti-
ties of oil to enter the air intake and exhaust systems.
Loss of engine lubricant can result in serious engine
damage.
Minor leakage of oil into a turbocharger under extend-
ed low idle operation should not cause problems as
long as a turbocharger bearing failure has not oc-
cured.
When a turbocharger bearing failure is accompanied
by a significant engine performance loss (exhaust
smoke or engine rpm up at no load), do not continue
engine operation until the turbocharger is renewed.
A visual inspection of the turbocharger can minimize
unscheduled downtime. A visual inspection of the
turbocharger can also reduce the chance for potential
damage to other engine parts.
Removal and Installation
Note: The turbochargers that are supplied are
nonserviceable.