IHI 55N3 Operation Manual Download

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MAINTENAN

UNUSUAL

Special problems in maintenance and
operation are caused by unusual conditions
such as extremes in heat, cold and humidity,
high altitude, salt water, and dusty or sandy
work sites. When operating under such
conditions, special precautions must be
taken to prevent machine damage, minimize
wear, and avoid component deterioration.

Extreme Cold

In periods of extreme cold, the problems of
freeze damage, inadequate lubrication and
battery failure may become particularly
trouble-some. With the onset of very cold
weather, it is advisable to "winterize" the
machine by servicing the cooling system and
switching to the lubricants recommended for
cold weather usage.
Follow the recommendations below when the
machine must be operated in very cold
conditions.

1. To prevent freeze damage to the cooling

system and cracking of the engine block
or head, drain and flush the cooling
system. Clean the radiator exterior,
making certain the air passages through
the core and the cooling fins are free of
foreign matter.

Refill the cooling system, adding an
antifreeze solution recommended by the
engine manufacturer in an amount and
strength appropriate to the anticipated
temperatures. A corrosion inhibitor is
recommended.

Never use a chromatic base corrosion
inhibitor when the coolant contains
ethylene glycol. Use only non-chromatic
base inhibitors.

Inspect the thermostat, clamps, radiator
hoses and radiator core for proper
condition. Replace or repair any cooling
system component found to be defective.

2. Condensation in the fuel tank contaminates

the fuel supply with water, which can freeze

in the fuel lines and block the fuel flow to
the engine. To minimize this possibility,
keep the tank as full as is practical during
cold weather.
This may entail refilling the tank more
frequently than usual, but the inconvenience
is small compared to clearing a blocked
fuel line.
If water should be noticed in the fuel
supply, drain the tank and refill it with
uncontaminated fuel.

3. Lubricate the machine with the lubricants

recommended for cold weather operation
in the lubrication section. If necessary,
change the engine oil and other lubricants
in order to conform to the recommendations.

4. The battery is more likely to sustain freeze

damage if not kept fully charged because
its electrolyte will freeze at a higher
temperature than that in a fully charged
battery. Be certain the battery is charging
when the engine is running and use an
external charger to restore full charge
when the machine is not being operated.
The battery can discharge if snow or ice
short circuits the terminals. Keep the
battery posts and cable connectors clean
and dry. Remove any corrosion with a
solution of soda and water.
During extremely cold weather, it is
advisable to remove and store the battery
in a heated area when the machine is to
remain idle overnight or for any extended
period.

Water added to the battery can freeze
before it mixes with the electrolyte.
During very cold weather, add water to the
battery just prior to, or during operation of
the machine.
If the machine is not to be run, water
may be added if an external charger is
connected to the battery.

3-11 UNUSUAL OPERATING CONDITIONS

CAUTION