Crane cooling system

- Jan 12, 2018 -

Crane cooling system


1, cooling system inspection


1) In all cases, antifreeze must be used.


2) The crane checks the coolant level every day before starting the machine. When the water level is lower than the detection hole of the expansion tank, add coolant.


3) The specified antifreeze must be used. Using unqualified antifreeze can damage (corrode) your engine, causing it to leak. Do not add cold coolant to the hot engine. Wait until the engine cools to below 50ºC before adding the same amount of coolant. Failure to do so may result in damage to the engine castings. Note that mineral water or other brands of antifreeze may not be added.


4) Regularly check the tank (radiator) and the fan, the radiator shall not be blocked by leaves, dust and other debris and affect the cooling effect, if necessary, timely clean-up.


5) Regularly check the drive belt (fan, generator).


Visual inspection of the drive belt daily before starting for wear and tear.


Horizontal cracks do not affect the use, when the longitudinal cracks need to be replaced when the belt.


6) Only use the coolant filter approved by the engine manufacturer to replace the filter cartridge periodically.


The coolant must contain an appropriate amount of DCA4 to prevent cylinder line cavitation and cooling system corrosion.


2, check the coolant


Visually inspect whether the water level is at the detection hole on the expansion tank or add coolant if the coolant is not there.


Warning: When the engine is at working temperature, the coolant has high temperature and pressure, so do not open the radiator cover during hot car.


Use a thick cloth or gloves to slowly open until the sound and flow stop before removing the lid.


Failure to comply with this rule may result in serious personal injury or death.


3, add coolant


1) Slowly open the filler cap to relieve the cooling system pressure.


2) Check if the water level is at the detection hole on the expansion tank. If coolant does not reach this point, add coolant.


3) The qualified coolant from the expansion tank filling port into the tank.


4) With the radiator and expansion tank filled with coolant, start the engine and operate at low idle for about 5 min, the coolant level will drop.


5) Turn off the engine, remove the key, and then add coolant to the detection hole on the expansion tank.


6) Close the filler cap.


CAUTION: When filling the cooling system, make sure that no air bag is formed and air is drawn into the system causing damage to the engine.


Burn and burn danger!


Make sure you cool down for 60 minutes before doing the job.


Open the cover of the engine cooling system only when the engine has cooled down, otherwise the system is under pressure and prone to accidents. The radiator cap must be removed when cleaning the cooling element!


If necessary (eg when repaired), replace coolant as soon as possible. Change coolant at least every two years.


4, clean the radiator and replace the coolant


Clean the radiator and replace the coolant Note:


1) Use medium pressure (to avoid damage to the radiator plate) Pour compressed air or water toward the radiator until the radiator plate is free of any deposits.


2) If the coolant reaches an abnormally high temperature at normal room temperature, the inside of the cooling system may be contaminated. In this case, the cooling system must be thoroughly cleaned, the grease must be removed from the cooling line, decalcified and derusted.


3) Do not use mineral water, otherwise the engine block will fouling, but do not use demineralized water.


4) Pause the system several times while filling, allowing the coolant level to stabilize so that the air escapes even if there is air.


5) Throughout the year, anti-corrosion antifreeze should be incorporated into the coolant (see Engine Operating Instructions). Antifreeze does not have any side effects on the finished coolant.


6) For details, please refer to the engine manufacturer's operating instructions.


Replacing the coolant Procedure:


1) Shut down the engine.


2) Slowly open the filler cap to relieve the cooling system pressure.


3) Prepare the proper container for the coolant.


4) Open the drain plug on the radiator to drain the coolant.


5) Empty the coolant in the engine and radiator.


6) After draining the cooling system, the drain plug should be screwed in.


7) Fill the cooling system with fresh coolant. Add coolant to the test hole on the expansion tank.


8) Start the engine, low idle speed for about 5min, the coolant level will drop.


9) Turn off the engine and check the coolant level. If necessary, add coolant.


5, drive fan belt check


Engine fan belts are wearing parts and usually last for 1 year or 1000 hours. Engine manufacturers in 1 year or 1000 hours without warranty.


When replacing the belt, please follow the maintenance manual provided by the engine manufacturer for replacement.


Check the tension of the fan belt, you can use your finger press the fan belt (about 100N) in the middle of the deflection in the 10mm-15mm when normal.


Turn off the engine before checking the belt. Failure to do so could result in serious personal injury.

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