PLATE 1245839 - Caterpillar

Keep engine speed low until the engine oil pressure indicator light goes out. If it does not go out within 10 seconds, stop the engine and investigate the cause before starting again. Failure to do so, can cause engine damage.
The hydraulic activation control lever must be in the UNLOCKED position, before the hydraulic controls will function. 1. Allow the engine to warm up at LOW IDLE for at least five minutes. Engage and disengage the implement controls to help speed warm up of hydraulic components.When idling the engine for warm-up, observe the following recommendations:* In temperatures above 0°C (32°F), warm-up requires approximately 15 minutes.* In tmperatures below 0°C (32°F), warm-up requires approximately 30 minutes.* In temperatures below - 18°C (0°F) or if hydraulic functions are sluggish, more time may be required.
The hydraulic control valve may become overheated if the bucket is operated continuously under relief conditions.Operate the control valve for 10 to 15 seconds and then return the control lever to the HOLD position for five to ten seconds.
2. To warm up the hydraulic oil, turn the engine speed dial to medium engine speed. Move the stick in and out to its full stroke position. Do this operation for about five minutes.3. Place the power mode switch in Mode III position and turn the engine speed dial to the maximum engine speed. Run the engine for additional five minutes while repeating the above stick in and out operation. This will allow the oil to warm more rapidly.Cycle all controls to allow warm oil to circulate through all cylinders and lines. 4. Observe the gauges and indicators frequently during the operation.