Maintenance
Safety, Operation and Maintenance Manual - Aug 2012
5-12
SY115C9/135C/155H Crawler Hydraulic Excavator
hours.
As a basic principle, we do not recommend
you using coolants other than TEEC-L35
antifreeze. The use of other coolants is
possible to cause serious problems, such
as corrosion of the light metal parts of the
engine and cooling system.
●
Use distilled water or tap water (softened
water) to dilute anti-freezing coolant.
Natural water, such as river water and well
water (hard water), contains large amount
of minerals (calcium, magnesium, etc.),
which can easily scale in the engine and
radiator. The scale is hardly removed once
formed in the engine and radiator. Over-
heat can occur due to unfavorable heat
exchange. The water with overall hardness
lower than 10 PPM is recommended when
diluting the coolant.
●
Precautions in this manual must be fol-
lowed when using antifreeze.
●
Anti-freezing coolant is
fl
ammable. There-
fore, it must be kept away from naked
fi
re.
●
If the engine is overheating, wait for the
engine to cool down before refilling cool-
ant.
●
Overheat can be caused if the coolant
level is low. In addition, the air trapped in
coolant can result in corrosion problem.
5.2.2 Grease
●
Grease is used to prevent distortion and
noise of joints.
●
It is necessary to add grease to any com-
ponent that appears in
fl
exible or noisy after
operation for a long period.
●
Always use the recommended greases.
Select the grease according to change
interval and ambient temperature recom-
