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69OPERATION UNDER COLD WEATHER CONDITIONS
OPERATION UNDER COLD WEATHER CONDITIONS
PREPARATION FOR OPERATION IN COLD
WEATHER
1. Replace engine oil and hydraulic oil with those of
viscosities suitable for cold weather.
2. In cold weather, battery power drops, and the battery
fluid may freeze if the battery is not sufficiently
charged. To prevent the battery fluid from freezing, be
sure to keep the battery charged at least 75% or more
of its capacity after operation. To ease next starting, it
is recommended to keep the battery stored in closed
or heated rooms. If the battery fluid level is too low, do
not add after operation, but add with the engine
running before the next operation.
3. Add anti-freeze to coolant in the radiator and reserve
tank, if the ambient temperature is expected to drop
below 0 (32 ). Mixing ratio of water and anti-freeze
depends on the expected ambient temperature.
A Mixing ratio between water and anti-freeze
A Use permanent anti-freeze or long-life coolant.
A Drain the coolant completely and clean the inside of
the radiator, then fill with the water and anti-freeze
mixture.
A The anti-freeze acts as an anti-corrosive, it is not
necessary to add an additive to the water and anti-
freeze mixture.
A See "Coolant check" under "DAILY CHECKS" in
"MAINTENANCE" for radiator fill volumes.
PROCEDURE AFTER DONE WORK
Clean the excavator thoroughly after work and wipe dry.
Otherwise mud and earth on the tracks could freeze if the
temperature drops below the 0 (32 ) mark. Operation
of the excavator is then not possible. Store the excavator
in a dry place; if not possible, store on wooden planks or
on mats. If the excavator is kept on damp or muddy
ground, the tracks could freeze overnight. Operation of
the excavator is then not possible. Furthermore the
reduction gear may be damaged.
Additionally, the piston rods of the hydraulic cylinders
must be rubbed dry. Otherwise severe damage could
occur if dirty water seeps through the seals.
Ambient
Temperature
()
-5
(+23)
-10
(+14)
-15
(+5)
-20
(-4)
-25
(-13)
-30
(-22)
-35
(-31)
Antifreeze % 30303035404550
Water % 70707065605550
89


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