Komatsu PW130ES-6K, Operation & Maintenance Manual

Page: 151 / 271

COLD WEATHER OPERATION OPERATION
150
COLD WEATHER OPERATION
PRECAUTIONS FOR LOW TEMPERATURE
If the temperature becomes low, it becomes difficult to start the
engine, and the coolant may freeze, so do as follows.
FUEL AND LUBRICANTS
Change to fuel and oil with low viscosity for all components. For
details of the specified viscosity, see “USE FUEL, COOLANT
AND LUBRICANTS ACCORDING TO AMBIENT TEMPERA-
TURE” on page 173.
COOLANT
Keep antifreeze fluid away from an open flame. Never smoke
when using antifreeze.
NOTICE
●
• Never use methanol, ethanol or propanol based anti-
freeze.
●
Absolutely avoid using any water leak preventing agent
irrespective of whether it is used independently or mixed
with an antifreeze.
●
Do not mix one antifreeze with a different brand.
For details of the antifreeze mixture when changing the
coolant, see see “WHEN REQUIRED” on page 188.
Use a Permanent Antifreeze (ethylene glycol mixed with corro-
sion inhibitor, antifoam agent, etc.) meeting the standard require-
ments as shown below. With permanent antifreeze, no change of
coolant is required for a year. If it is doubtful that an available anti-
freeze meets the standard requirements, ask the supplier of that
antifreeze for information.
Standard requirements for permanent antifreeze
●
SAE.............................................................................. J1034
●
FEDERAL STANDARD........................................... O-A-548D
REMARK
Where no permanent antifreeze is available, an ethylene gly-
col antifreeze without corrosion inhibitor may be used only for the
cold season. In this case, clean the cooling system twice a year
(in spring and autumn). When refilling the cooling system, add
antifreeze in autumn, but do not add any in spring.