BOLT 0003604 - Caterpillar

you operate the machine, perform the following checks and make any necessary repairs:
Look for broken lenses on the gauges, broken indicator lights, broken switches, and other broken components in the cab.
Turn the keyswitch to the ON position. All indicator lights on the dash except the engine air filter indicator will come on for one to two seconds. Verify that all indicator lights are illuminated.
Start the engine.
Check and repair any oil leaks around the covers or around the hoses.
Look for inoperative gauges.
Turn on all of the machine lights. Check for proper operation. Sound the forward horn.
Move the machine forward and test the service brakes. See Operation and Maintenance Manual, "Braking System - Test".
Stop the engine.