Maintenance
Safety, Operation and Maintenance Manual - Aug 2012
5-37
SY115C9/135C/155H Crawler Hydraulic Excavator
5.8.2.2
Cooling system - clean
●
The radiator coolant is still hot under high pressure when the engine has just been
shut down. It is possible to burn if you remove the radiator cap to drain the coolant.
Remove the cap slowly to relieve pressure only when the cap is cool enough to touch
with your bare hand.
●
When you start the engine for cleaning purpose, the hydraulic lockout control should
be placed in the LOCK position in order to prevent movement of the machine.
●
For more information on startup of the engine
See
related sections in this manual.
●
When disassembling the outer
fi
lter element, it is dangerous to pull it out with force.
Be careful when you are doing this job on an overhead surface or at where you are un-
able to stand
fi
rmly. Take care that the counter-acting force of pulling the outer
fi
lter
element could cause you to fall.
Anti-freezing coolant
Interval for cleaning the inside of the cooling system and
changing anti-freezing coolant
TEEC-L35 antifreeze
Every years or 2000 hours, whichever occurs
fi
rst
Always prepare your machine as required and lock/tag it out before proceeding.
See “Preparing
the machine” on page 2-58 and “Lock-out and tag-out” on page 2-60.
Clean the inside of the cooling system and change the coolant according to the following table.
WARNING
The coolant is also an important
fl
uid against corrosion and
freezing
.
Anti-freezing coolant is also necessary in regions where freezing prevention is unnecessary.
Sany recommends TEEC-L35 antifreeze, which has excellent performance in anticorrosion, anti-
freezing and cooling, and can last for one year or 2000 hours.
We do not recommend you using other coolants. The use of other coolants is possible to erode
the engine and cooling system parts that made of light metal such as aluminum.
Table 5-7