Vehicle Inspection Guide 19 Diesel Exhaust Fluid (DEF) area DEF tanks Verify: Tanks and caps are secure There is no damage to the tanks. Leaks Inspect for leaks from the tanks. Underbody Driveshaft Verify: The driveshaft is not bent or cracked All driveshaft couplings are secure. Exhaust system Verify: The visible outside parts are securely mounted There are no cracks, holes or severe dents. Frame Inspect for cracks or bends in longitudinal frame members. Verify there are no loose, cracked, bent, broken or missing crossmembers or crossmember fasteners.
Rear of vehicle Air hoses and electrical lines Verify there are no cuts, cracks, chafing or wear on the air hoses and electrical line insulation. Listen for audible air leaks. Verify air and electrical lines are not tangled, crimped or pinched or being dragged against any truck parts. None of the air or electrical line should be spliced or taped. Inspect for corrosion on pins and in electrical sockets to verify continuity and reduced heat build-up potential. Deck plate Verify the deck plate is clean, bolted securely to the frame and is clear of loose objects. Turns signals, brake lights and flashers Verify:
Both brake lights illuminate when the pedal is applied Each signal flashes Four-way flashers work properly. 2015 F-650/750 (f67) Owners Guide gf (ownloose) , 1st Printing, December 2013 Canadian_French (fr_can)