SAFETY - Weekly Checks 1 Lights - turn ignition key to the ON position and check for warning lights and buzzer. Check operation of turn signals and emergency lights. Instruments - check all instruments. See Systems Check on page 26 Windshield - check operation of windshield wipers and washers. Horn - check operation of horn. Fuel - check fuel. Is there enough fuel? Diesel Exhaust Fluid - check level. Is there enough fluid? Air conditioning filters in the cab Engine Cab air conditioner fresh air filter - check for condition and cleanliness.
PACCAR 20k Front Axle Kingpin Joint Grease/Tie Rod Ends (option) (VOCATIONAL USE) - For vocational vehicles with this axle, grease with Heavy-Duty Multipurpose Lithium Based: #1 or #2 grade, every 50 hours. (Refer to Front Axle and Suspension on page 224 for maintenance instructions.) Belts Hoses Clamps Radiator Air filter and its housing Engine aftertreatment system components Exhaust pipes Automatic transmission fluid (where applicable) - Check level, after the engine has warmed up to operating temperature. Systems Check Chassis and Cab Exterior Battery - check battery and terminals. Wheel cap nuts - are they all in place and torqued properly - tighten if necessary.
Wheels on page 242 Controls and wiring - check for condition and adjustment Steering components - check pitman arm, drag link, intermediate shaft U-joint pinch bolt, tie rod, steering shaft and power steering hoses, etc., for loose, broken, or missing parts. Systems Check evaluates each monitored system and shows the progress of that check on the display. The Systems Check will appear when the Exterior Lighting Self- Test (ELST) is activated (see Exterior Lighting Self-Test (ELST) on page 77), or when viewing the Notifications sub-menu (see Menu on page 74). Weekly Checks NOTE These checks are in addition to, not in place of, Federal Motor Carrier Safety Regulations.
These regulations may be purchased by writing to: Superin- tendent of Documents U.S. Govern- ment Printing Office Bookstore 710 N. Capitol St. N.W. Washington, DC 20402, or ContactCenter@gpo.gov. 26 Y53-6096-1C1 (09/20)