Komatsu GALEO BR550JG-1, Руководство по эксплуатации и техническому обслуживанию

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MAINTENANCE
SERVICE PROCEDURE
CLEAN INSIDE OF COOLING SYSTEM
WARNING
The engine cooling water is still at high temperature right after the engine is stopped and the radiator interior is pressurized.If
the radiator cap is loosened under such conditions, the hot water spurts out, causing a serious burn. Wait until the temperature
cools down and turn the cap slowly to release the internal pressure.
Start the engine for cleaning. When leaving the machine, while the engine is running, set the travel lever safety lock to the LOCK
position.
For starting the engine, see the sections of "CHECK BEFORE STARTING ENGINE (PAGE 3-33)" and "STARTING ENGINE (PAGE
3-49)" in OPERATION of Operation in this manual.
If the engine is run without the undercover, there is the danger that you may touch the rotating fan.
When the engine is running, never get close to the rear of the machine.
Clean the inside of the cooling system, change the coolant and replace the corrosion resistor according to the table
below.
Kind of Antifreeze
Cleaning of Cooling System and
Replacement
Replacement of Corrosion
Resistor (if equipped)
Super Coolant AF-ACL Antifreeze
(Anti-corrosive and
all season type)
Every two years (every other
year and in fall) or 4000 hours of
operation whichever comes
earlier
Every 1000hours of operation
plus when cleaning cleaning
interior of cooling system and
when replacing antifreeze
Stop the machine on level ground when cleaning or changing the coolant.
Super Coolant (AF-ACL) has both antifreezing effect and anticorrosive effect.
The mixing ratio depends on an ambient temperature. It should be minimum 30% in cubic ratio to obtain
anticorrosive effect.
When deciding the ratio of antifreeze to water, check the lowest temperature in the past, and decide from the mixing
rate table given below.
It is actually better to estimate a temperature about 10
° C (18 ° F) lower when deciding the mixing rate.
Mixing rate of water and antifreeze
Lowest ambient
temperature
Mixing amount
° C -10 -15 -20 -25 -30
° F 14 5 -4 -13 -22
Amount of antifreeze
liter 13.2 15.8 18.0 20.2 21.9
US gal 3.49 4.17 4.76 5.34 5.79
Amout of cooling water
liter 30.7 28.1 25.9 23.7 21.9
US gal 8.11 7.42 6.84 6.26 5.79
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