IHI 55N3 Operation Manual Download

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MAINTENAN

UNUSUAL

5. Special attention must be given to the

hydraulic oil during very cold weather.

BEFORE

attempting any working

operations, warm up the hydraulic oil as
described in “After Starting the Engine
on Sheet No. 3-6”.

6. At the end of the work period, or whenever

the machine is to be left idle for extended
periods, prevent it from being frozen to
the ground by parking it on wood,
concrete, asphalt or mat surface.

Extreme Heat

Like extreme cold, extreme heat requires that
precautions be taken with respect to the
cooling system, the battery and lubrication.
Protect the machine by performing the
following recommended procedures:

1. High temperatures necessitate the use of

lubricants which are both more viscous
and which resist deterioration at higher
operating temperatures. Refer to the
Lubrication Section and lubricate the
machine using the lubricants recommended
for the expected temperatures.
Crankcase oil is particularly important
because it helps dissipate heat. Check
the oil level frequently and add oil as
required to maintain required level. Too
little oil will hinder heat dissipation.

2. To ensure proper coolant circulation, drain

and flush the cooling system, clean any
foreign matter from the radiator cooling
fins and through-core air passages,
replace defective hoses, tighten hose
clamps, tension the water pump drive belt
properly, eliminate any leaks detected and
fill the system with a 50% solution of
ethylene glycol.
A corrosion inhibitor is recommended.
Engine overheating due to loss of coolant
will most often be corrected by

SLOWLY

adding coolant while the engine is running
at

FAST IDLE

. Should this fail to correct

the problem, drain and flush the system
and refill with fresh coolant (50% solution
of ethylene glycol) and a corrosion inhibitor.

Allow the engine to cool before draining
and flushing the cooling system.
Water containing more than small
concentrations of salt or minerals should
not be used in the cooling system. Salt
facilitates corrosion and minerals deposit
on the coolant passage walls.
Both processes inhibit proper cooling.

3. Increased evaporation rates will cause the

battery electrolyte level to fall more rapidly
during very hot weather. Check the level
frequently and add distilled water as
required to maintain the proper level.

4. Air circulation around the engine and

battery must not be restricted. Keep air
intake and exhaust openings clear of
leaves, paper or other foreign matter
which may restrict air flow.

5. Keep the engine clean of dirt, grease and

other substances which inhibit heat
dissipation.

6. Operate engine at full throttle when

digging or tracking machine.
Run the engine only when engaged in
work operations or when traveling the
machine. Avoid prolonged periods at idle
and shut the engine down if operations
are interrupted.

Sandy or Dusty Work Sites

The presence of large amounts of sand or
dust at the work site can contribute to
accelerated component weather. Either
substance win act as an abrasive when
deposited on moving parts of the machine.
This problem can be alleviated by increasing
the schedule of lubrication and by servicing
breathers and fillers at more frequent
intervals. Follow the recommendations below
when operating in sand or dust on a regular
bases.

CAUTION