Komatsu Galeo PC27MR-2, Operation & Maintence Manual

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MAINTENANCE
MAINTENANCE PROCEDURE
When deciding the ratio of antifreeze to water, check the lowest temperature in the past, and decide from the mixing
table given below.
It is actually better to estimate and temperature about 10
°
C (18
°
F) lower when deciding the mixing ratio.
The mixing ratio depends on the ambient temperature, but it should always be a minimum of 30% by volume
(antifreeze/total amount of coolant x 100).
The freezing temperature of undiluted antifreeze is -15
°
C (5
°
F). Do not store undiluted antifreeze at a temperature
of below -15
°
C (5
°
F).
Mixing rate of water and antifreeze
Min.
atmospheric
temperature
°
C Above -10 -15 -20 -25 -30
°
F Above 14 5 -4 -13 -22
Amount of antifreeze
Liters 1.0 1.1 1.4 1.5 1.7
US gal 0.26 0.29 0.37 0.40 0.45
Amount of water
Liters 2.3 2.2 1.9 1.8 1.6
US gal 0.61 0.58 0.50 0.47 0.42
WARNING
Super coolant is flammable, so be particularly careful to keep it away from flame.
Super coolant is toxic. When removing the drain plug, be careful not to get coolant on yourself.
If it gets into your eyes, wash your eyes immediately with ample water, then consult a doctor for treatment.
Always use Komatsu genuine super coolant (AF-NAC) for the coolant.
Use tap water to dilute the coolant. If river water or well water or simple water supply must be used, please consult
your Komatsu distributor.
We recommend the use of a super coolant density meter to control the mixing ratio.
Prepare a container of a capacity of at least 3.3 liters (0.87 US gal) to catch the coolant.
Prepare a water inlet hose.
1. Open the engine rear cover and cooling cover. For details, see
"COOLING COVER (PAGE 3-29)".
2. Check that the coolant temperature has gone down enough to
make it possible to touch the radiator cap surface by hand,
then turn radiator cap (1) slowly until it contacts the stopper to
release the pressure.
3. Following this, push radiator cap (1), turn it until it contacts the
stopper, then remove it.
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