4.9 Service procedure
When required
Maintenance
4-36
WA470-6H – VEAM946100
Even in the areas where freezing is not an issue, the use of anti-
freeze coolant is essential.
KOMATSU machines are supplied with KOMATSU Supercoolant
(AF-NAC). KOMATSU Supercoolant (AF-NAC) has excellent
anticorrosion, antifreeze and cooling properties and can be used
continuously for 2 years or 4000 hours.
KOMATSU Supercoolant (AF-NAC) is strongly recommended
wherever available.
To maintain the anticorrosion properties of Supercoolant (AF-
NAC), always keep the density of Supercoolant between 30%
and 68%.
When using KOMATSU Supercoolant (AF-NAC), there is no
need to use a corrosion resistor.
When no corrosion resistor is used, use the special cover (600-
411-9000). Please consult your KOMATSU distributor about the
method of installing.
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 a temperature about 10°C lower
when deciding the mixing rate.
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. Do
not store undiluted antifreeze at a temperature of below -15°C.
Mixing rate of water and antifreeze
Min. atmospheric
temperature
°C
-10
-15
-20
-25
-30
°F
14
5
-4
-13
-22
Amount of
antifreeze
Liter
18.3
21.4
24.4
27.5
30.5
US gal
4.83
5.64
6.44
7.25
8.06
Amount of water
Liter
42.7
39.7
36.6
33.6
30.5
US gal
11.28
10.47
9.67
8.86
8.06
Ratio
%
30
35
40
45
50
Summary of Contents for WA470-6 2006
Page 2: ......
Page 3: ...Foreword WA470 6H VEAM946100 1 1 1 Foreword...
Page 22: ...1 5 Contents Foreword 1 20 WA470 6H VEAM946100 7 Index 7 1 7 1 Index 7 2 8 Notes 8 1...
Page 28: ...1 7 CE Conforming equipment Foreword 1 26 WA470 6H VEAM946100...
Page 250: ...3 7 Troubleshooting Operation 3 178 WA470 6H VEAM946100...
Page 340: ...4 9 Service procedure Every 12000 hours service Maintenance 4 90 WA470 6H VEAM946100...
Page 341: ...Technical Data WA470 6H VEAM946100 5 1 5 Technical Data...
Page 343: ...Technical Data 5 1 Technical data WA470 6H VEAM946100 5 3 GK032301 A B H I G C E F D...
Page 348: ...5 4 Limit values for slopes Technical Data 5 8 WA470 6H VEAM946100...
Page 381: ...Index WA470 6H VEAM946100 7 1 7 Index...
Page 387: ...Notes WA470 6H VEAM946100 8 1 8 Notes...
Page 388: ...Notes 8 2 WA470 6H VEAM946100...
Page 389: ...Notes WA470 6H VEAM946100 8 3...
Page 390: ...Notes 8 4 WA470 6H VEAM946100...
Page 391: ...Notes WA470 6H VEAM946100 8 5...
Page 392: ...Notes 8 6 WA470 6H VEAM946100...