2018 Ford F-550 Super Duty Service and Repair Manual

This factory service and repair manual for the 2018 Ford F-550 Super Duty is for the XL, XLT and Lariat trims of a chassis cab built as a four-door crew cab, a two-door conventional cab or a four-door extended cab, with a choice of the 6.7L V8 turbo diesel, an overhead valve engine of 406 cubic inches, or the 6.8L V10, a naturally aspirated SOHC gasoline engine of 415 cubic inches. Procedures, specifications, torque values, wiring diagrams and diagnostics cover both engines, the block heater and lighting circuits on the electrical side, and the steering, structure and power train of the chassis.

Engines covered

• 6.7L V8 (406 cu in) — OHV, turbocharged, diesel
• 6.8L V10 (415 cu in) — SOHC, naturally aspirated, gasoline

Body styles covered

• 4-door cab & chassis, crew cab
• 2-door cab & chassis, conventional
• 4-door cab & chassis, extended cab

Trims covered

• Lariat
• XL
• XLT

Known issues on the 2018 F-550 Super Duty. Only one of this year's eight recalls came from Ford; the rest from the companies that built emergency bodies on the chassis. Ford's covers the block heater cable, where water in the splice connector can corrode it into a resistive short; the upfitter campaigns concern brake lights that can illuminate without the pedal pressed and back-up camera monitors that can reset and show a reversed image. Owners have logged eight complaints with NHTSA, two each on the structure and steering and one on the power train. The manual's wiring diagrams for the block heater and lighting circuits and its steering and power train procedures cover those systems.