Operation 3.5 Cold weather operation 3.5.2 Precautions after completion of work To prevent mud, water, or the undercarriage from freezing and making it impossible for the machine to move on the following morning, always observe the following precautions. z Remove all the mud and water from the machine body. In particular, wipe the hydraulic cylinder rod clean to prevent damage to the seal caused by mud or dirt on the rod surface getting inside the seal together with drops of water. z Park the machine on hard, dry ground. If this is impossible, park the machine on wooden boards. The boards help protect the wheels from being frozen in soil and the machine can start next morning.
z Open the drain valve and drain any water collected in the fuel system to prevent it from freezing. z Fill the fuel tank to the full in order to prevent moisture from forming dew in the tank room, as the ambient temperature goes down. 3.5.3 After cold weather When season changes and the weather becomes warmer, do as follows. z Replace the fuel and oil for all parts with oil of the viscosity specified. For details, see "Fuel, coolant and lubricants (4-11)".
z If for any reason permanent antifreeze cannot be used, and an ethyl glycol base antifreeze (winter, one season type) is used instead, or if no antifreeze is used, drain the cooling system completely, then clean out the inside of the cooling system thoroughly, and fill with fresh coolant. 3.5.4 Warming-up operation for steering hydraulic circuit in cold weather If the steering wheel is operated and stopped while the oil temperature is low, there may be a time lag before the machine stops turning. In this case, use the safety bar to ensure safety, and per- form the warm-up operation in a wide place. Do not load up the hydraulic oil in the circuit continuously for more than 5 seconds.
When the temperature is low, do not start the operation of the machine immediately after starting the engine. Warming up steering hydraulic circuit Slowly operate the steering wheel to the left and right to warm up the oil in the steering valve. (Repeat this operation for about 10 minutes to warm up the oil.) GK032216 Lock Free NOTE Unlock the safety bar. Operate the steering wheel a little and stop in that position. Then, confirm that the machine is steered by an angle equivalent to the turning angle of the steering wheel. WA150-5H – VEAM934100 3-107 WARNING WARNING