IHI 55N3, Operation Manual, Page: 100 / 115

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MAINTENAN C E
UNUSUAL
1. Keep sand and dust out of the hydraulic
system by keeping the reservoir filler cap
tight and servicing the hydraulic system
filters frequently.
2. The fuel system should be kept free of
sand and dust by keeping the tank filler
cap tight and servicing the fuel filters
frequently.
3. The engine breathers and air cleaner
should also be serviced frequently to
prevent sand and dust from entering the
engine. The engine oil and oil filter should
be changed at shorter than normal
intervals to ensure a clean oil supply to
the engine's moving parts.
4. When lubricating the machine, thoroughly
clean each grease fitting before attaching
the grease gun. Pump generous amounts
of grease into all lubrication points, using
the fresh grease to pump out old.
5. Adequate ground bearing support may be
required for the tracks when operating in
soft sand. Be alert for signs of track
digging into sand during operations.
It may be necessary to back off and fill
in area where tracks dig in.
The increased frequency of lubrication
and service discussed above should be
determined by observations made at the
work site. Inspection will determine how
long it takes for lubricants, breathers and
filters to accumulate unacceptable
amounts of sand or dust. The frequency
of lubrication and service should be
adjusted accordingly.
„ „ „ „ „ High Humidity or Saltwater
In some locations, such as coastal areas, the
machine may be exposed to the deteriorating
effects of salt, moisture, or both. To protect
exposed metallic surfaces, wiring, paint and
other items, keep them dry and well
lubricated where salt or high humidity are
encountered. Follow the recommendations
below when operating in these conditions.
1. Make frequent inspections for rust and
corrosions and remove them as soon as
they are detected. Dry and paint exposed
surfaces after rust and corrosion have
been removed.
2. Where paint may not be applied, such as
on polished or machined surfaces, coat
the area with grease or lubricant to repel
water.
3. Keep bearings and their surrounding
surfaces well lubricated to prevent the
entry of water.
4. Never use saltwater in the cooling system.
Internal corrosion will occur and all parts
will have to be replaced.
5. Hose down the machine periodically when
working in saltwater. If necessary, use an
oil soaked cloth to clean moving parts.
6. If the machine is submerged, be sure it is
never submerged in water deeper than
upper crawler belt.
If the machine exceeds this limit,
disassemble, clean and lubricate the
lower.
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High Altitudes
Variations in altitude alter the fuel-air mixture
burned in the engine and affect the engine's
performance. At high altitudes, atmospheric
pressures are lower and less oxygen is
available for combustion of the fuel. Above
1500 meter, the engine fuel setting may have
to be changed to ensure proper performance.
Consult engine manufacturer should this
problem answer.
Keeping the air cleaner clean and free of
obstructions will help alleviate high altitude
problems.
At high altitudes, closely monitor the engine
temperature for overheating.