https://www.truck-manuals.net/mack/ 244 MAINTENANCE AND LUBRICATION HEADLIGHTS Bulb Replacement Note: This vehicle uses a sealed beam type headlamp bulb which is replaceable without special tools.
WHEELS Wheel Inspection Look at the wheels and cap nuts. Inspect them for evidence of cap nut looseness. Rust streaks from the cap nut ball seat are an indication of looseness. Refer to the Maintenance and Lubrication Manual for complete procedures concerning wheel inspection and wheel nut tightening.
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Look for cracks around the hand hole, stud hole and wheel. Look for broken studs, wheel damage or improperly seated lock rings.
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