BOLT 0001588 - Caterpillar

Illustration 1 g01099985
Oil pressure should rise within 15 seconds after the engine starts. If oil pressure is not indicate on the gauge within 15 seconds, DO NOT operate the engine. STOP the engine, investigate and correct the cause.
Allow a cold engine to warm up at LOW throttle position for at least five minutes.
Look at the gauges and the indicator lights frequently during operation.If the gauges do not respond properly, stop the engine. Inspect the electrical system or the machine system in order to determine the cause of the malfunction. Perform any necessary repairs before you operate the machine.
Cycle all controls in order to allow warm oil to circulate through all of the lines and the cylinders.Observe the following recommendations during the warm-up period for the engine:
In temperatures above 0°C (32°F), the warm-up period is 15 minutes.
In temperatures below 0°C (32°F), the warm-up period is 30 minutes or a longer period of time.
In temperatures below -18°C (0°F), more time is required if the hydraulic controls are sluggish.