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76
Maintenance Section
Starting Motor - Inspect
Environmental Factors
Ambient temperatures – The engine may be
exposed to extended operation in extremely
cold environments or hot environments. Valve
components can be damaged by carbon buildup if
the engine is frequently started and stopped in very
cold temperatures. Extremely hot intake air reduces
engine performance.
Quality of the air – The engine may be exposed
to extended operation in an environment that is
dirty or dusty, unless the equipment is cleaned
regularly. Mud, dirt and dust can encase components.
Maintenance can be very difficult. The buildup can
contain corrosive chemicals.
Buildup – Compounds, elements, corrosive
chemicals and salt can damage some components.
Altitude – Problems can arise when the engine is
operated at altitudes that are higher than the intended
settings for that application. Necessary adjustments
should be made.
Incorrect Operating Procedures
•
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/antifreeze
Starting Motor - Inspect
Perkins recommends a scheduled inspection of the
starting motor. If the starting motor fails, the engine
may not start in an emergency situation.
This document is printed from SPI². Not for Resale.
Check the starting 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 Perkins distributor for assistance.
Turbocharger - Inspect
(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.
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
i02177969
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.
SEBU7833-03
i02184788
NOTICE
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