Komatsu PW160-7K Series, Operation And Maintenance Manual

Page: 256 / 358

SERVICE PROCEDURE MAINTENANCE
256
When deciding the ratio of antifreeze to water, check the lowest
temperature in the past, and decide from the mixing rate table
given below. For details, see "Mixing rate of water and antifreeze
(256)"
It is actually better to estimate a temperature about 10°C lower
when deciding the mixing rate.
Mixing rate of water and antifreeze
WARNING
Antifreeze is flammable, so keep it away from any flame.
●
Use city water for the cooling water.
If river water, well water or other such water supply must be
used, contact your Komatsu distributor.
●
We recommend use of an antifreeze density gauge to control
the mixing proportions.
WARNING
When removing drain plug, avoid pouring coolant on your-
self.
REMOVAL
WARNING
●
Hot, scalding coolant can spray out if the radiator cap is
removed suddenly. Relieve system pressure by slowly
turning the cap to the first notch or lifting the safety lever
(if equipped). Remove the cap only after the pressure is
relieved.
●
Use extreme caution when adding coolant to the radiator
to avoid being burned. Wear gloves and goggles and
keep face away from the filler neck.
To remove the cap, turn the cap to the left, or counterclockwise up
to the safety stop until the cap is free to be removed.
INSTALLATION
When installing the cap, the gasket and contacting surfaces must
be clean. Turn the cap to the right, or clockwise until snug.
Min . atmospheric
temperature
º C -5 -10 -15 -20 -25 -30
Amount of antifreeze litres 3.75 4.9 5.8 6.6 7.45 8.1
Amount of water litres 12.45 11.3 10.4 9.6 8.75 8.1