1999 Ford F150 Owner Guide 1st Printing - Page 145

Driving 4WD - Electronic shift transfer case 1. Place transmission in N (Neutral). 2. Shift the transfer case to 2H (2WD high). 3. Lockout the center disconnect by capping off one of the front axle vacuum motor lines. See your dealer for assistance. 4. Maximum speed is 56 km/h (35 mph). 5. Maximum distance is 80 km (50 miles). If a distance of 80 km (50 miles) or a speed of 56 km/h (35 mph) must be exceeded, you must disconnect the rear driveshaft. With the rear driveshaft disconnected, the maximum speed is 88 km/h (55 mph) and there are no mileage restrictions. See your dealer for help with disconnecting the driveshaft. SNOWPLOWING Ford recommends the following specifications for low speed, personal use snow removal: • F-150/F-250 4WD Regular Cab long wheelbase • 4.6L or 5.4L engine • Heavy duty service package • Super engine cooling • Heavy duty front suspension package • Automatic transmission with auxiliary automatic transmission fluid cooling • All-terrain tires Do not install a snowplow and plow with your vehicle until it has been driven at least 800 km (500 miles). Installing snowplow Read the following instructions before installing a snowplow: • Front GAWR must not exceed 63% of the GVW. Add ballast weight to the back of the vehicle, if necessary. Refer to the Safety Compliance Certification Label to find Front GAWR. 145