BRUSH-NYLON 1U9788 - Caterpillar

Keep engine speed low and do not operate until the message 'Warm-Up Mode Power Derate" on the monitor goes out. If it does not go out within thirty seconds, stop the engine and investigate the cause before starting again. Failure to do so, can cause engine damage.
Always run the engine at low idle for at least ten minutes before performing any other operations in cold conditions to protect your engine and to protect your transmission.
The engine may automatically change speeds when the machine is stationary and idling in cold ambient temperature for an extended time. This process is done to:
Maintain desired coolant temperature.
Maintain desired operation of engine systems.
Maintain desired operation of the regeneration system during a manual regeneration procedure.During extended idling in cold ambient conditions, engine speed may operate between 1000 rpm and 1600 rpm. Operation at 1600 rpm is minimal and will only last for up to 20 minutes. The regeneration active indicator may also illuminate during extended idling conditions to signal that a regeneration procedure is in progress.Hydraulic System
When you cycle the machine controls, the machine can move suddenly. Contact between the machine and external objects or ground personnel can result in serious injury or death. Before you cycle the machine controls, the machine should be located in an unobstructed, hazard-free work area that is away from external objects and ground personnel.
Make sure that the area is clear of personnel and equipment.Note: The hydraulic lockout control must be in the UNLOCKED position before the hydraulic controls will function.
Allow the engine to warm up at low idle for at least 5 minutes. Engage the work tool controls and disengage the work tool controls. Doing so will speed up the warm-up of the hydraulic components.When you idle the machine for warm-up, observe the following recommendations:
If the temperature is greater than 0°C (32°F), warm up the engine for approximately 15 minutes.
If the temperature is less than 0°C (32°F), warm up the engine for approximately 30 minutes.
If the temperature is less than − 18°C (0°F) or if hydraulic functions are sluggish, additional time may be required.
To warm up the hydraulic oil, turn the engine speed dial to the medium engine speed. Run the engine for approximately 5 minutes and move the joystick intermittently from the BUCKET DUMP position to the HOLD position. Do not hold the joystick in the BUCKET DUMP position with the bucket cylinder fully extended for more than 10 seconds.Doing so allows the oil to attain relief pressure, which causes the oil to warm up more rapidly.
Turn the engine speed dial to the maximum engine speed and repeat Step 3.
Cycle all controls to circulate warm oil through all hydraulic cylinders and all hydraulic lines, and through the swing motor and travel motors.
Observe the gauges and the indicators frequently during the operation.