Zoomlion RT60 User Manual

RT60 Rough Terrain Crane 07 - 51
7. 22 UNUSUAL OPERATING CONDITIONS
Special problems in maintenance and operation are caused by unusual conditions such as
extremes in heat, cold and humidity, high altitude, salt water, and dusty or sandy work sites.
When operating under such conditions, special precautions must be taken to prevent
damage, minimize wear, and avoid component deterioration.
EXTREME COLD
In periods of extreme cold, the problems of freeze damage, inadequate lubrication and
battery failure may become particularly troublesome. With the onset of very cold weather, it
is advisable to “winterize” the crane by servicing the cooling system and switching to the
lubricants recommended for cold weather usage. Follow the recommendations in this
manual when the crane must be operated in very cold conditions.
a) To prevent freeze damage to the cooling system and cracking of the engine block or
head, drain and flush the cooling system. Clean the radiator exterior, making certain
the air passages through the core and the cooling fins are free of foreign matter. Refill
the cooling system, adding an anti-freeze solution recommended by the engine
manufacturer in an amount and strength appropriate to the anticipated temperatures.
A corrosion inhibitor is recommended.
Never use a chromate base corrosion inhibitor when the coolant contains
ethylene glycol. Use only non-chromate base inhibitors. Chromate base
inhibitors reacting with ethylene glycol can produce chromium hydroxide,
commonly known as “green slime”. This substance reduces the heat transfer
rate and can cause serious engine overheating.
b) Inspect the thermostat, clamps, radiator hoses and radiator core for proper condition.
Replace the parts if necessary;
c) Condensation in the fuel tank contaminates the fuel supply with water, which can
freeze in the fuel lines and block the fuel flow to the engine. To minimize this possibility,
keep the tank as full as is practical during cold weather. This may entail refilling the
tank more frequently than usual, but the inconvenience is small compared to clearing
a blocked fuel line. If water should be noticed in the fuel supply, drain the tank and refill
it with uncontaminated fuel;
d) Lubricate the crane with the lubricants recommended for cold weather operation. If
necessary, change the engine oil and other lubricants in order to conform to the
recommendations;
e) The battery is more likely to sustain freeze damage if not kept fully charged because
its electrolyte will freeze at a higher temperature than that in a fully charged battery. Be
certain the battery is charging when the engine is running and use an external charger
to restore full charge when the crane is not being operated.
During extremely cold weather, it is advisable to remove and store the battery in a
heated area when the crane is to remain idle overnight or for any extended period;
Caution

Zoomlion RT60 Specifications

General

Brand	Zoomlion
Model	RT60
Category	Construction Equipment
Language	English