Peterbilt 520 - Page 141

Every 500,000 mi / 800,000 km / 5 years..........................................................................................179
Every 750,000 mi / 1,200,000 km/ 24,000 Hours / 8 years...............................................................180
Lubricants..........................................................................................................................................181
Checking Oil Level............................................................................................................................ 182
Inspect Power Steering Fluid............................................................................................................ 183
Air System.........................................................................................................................................183
Dual Air System Function Test..........................................................................................................185
Air Dryer Maintenance...................................................................................................................... 185
Air Tanks........................................................................................................................................... 187
Air Gauges and Air Leaks................................................................................................................. 188
Air Compressor................................................................................................................................. 189
Brake System....................................................................................................................................190
Cab Maintenance..............................................................................................................................193
Cooling System Maintenance........................................................................................................... 198
Safety Restraint System - Inspection................................................................................................203
Windshield Wiper/Washer.................................................................................................................205
Electrical System...............................................................................................................................206
Engine Maintenance......................................................................................................................... 215
Fuel System...................................................................................................................................... 221
MAINTENANCE -
Y53-6096-1C1 (09/20) 141
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