2009 Infiniti FX50 Owner's Manual - Page 469

based on the trailer weight. . The diameter of the threaded shank of the hitch ball must be matched to the ball mount hole diameter. The hitch ball shank should be no more than 1/16@ smaller than the hole in the ball mount. The threaded shank of the hitch ball must be long enough to be properly secured to the ball mount. There should be at least 2 threads showing beyond the lock washer and nut. Class II hitch Class II trailer hitch equipment (receiver, ball mount and hitch ball) can be used to tow trailers of a maximum weight of 3,500 lb (1,588 kg). . ment. Regularly check that all trailer hitch mounting bolts are securely mounted. . CAUTION . Special hitches which include frame reinforcements are required for towing above 2,000 lb (907 kg). Suitable genuine INFINITI hitches for pickup trucks and sport utility vehicles are available at an INFINITI dealer. The hitch should not be attached to or affect the operation of the impactabsorbing bumper. Do not use axle-mounted hitches. Do not modify the vehicle exhaust system, brake system, etc. to install a trailer hitch. To reduce the possibility of additional damage if your vehicle is struck from the rear, where practical, remove the hitch and/or receiver when not in use. After the hitch is removed, seal the bolt holes to prevent exhaust fumes, water or dust from entering the passenger compart- Tire pressures . When towing a trailer, inflate the vehicle tires to the recommended cold tire pressure indicated on the Tire and Loading Information label. . Trailer tire condition, size, load rating and proper inflation pressure should be in accordance with the trailer and tire manufacturers' specifications. Sway control device Sudden maneuvers, wind gusts and buffeting caused by other vehicles can affect trailer handling. Sway control devices may be used to help control these affects. If you choose to use one, contact a reputable trailer hitch supplier to make sure the sway control device will work with the vehicle, hitch, trailer and the trailer's brake system. Follow the instructions provided by the manufacturer for installing and using the sway control device. . Safety chains Always use a suitable chain between your vehicle and the trailer. The safety chains should be crossed and should be attached to the hitch, not to the vehicle bumper or axle. The safety chains can be attached to the bumper if the hitch ball is mounted to the bumper. Be sure to leave enough slack in the chains to permit turning corners. . . . Class I hitch Class I trailer hitch equipment (receiver, ball mount and hitch ball) can be used to tow trailers of a maximum weight of 2,000 lb (907 kg). 9-24 Technical and consumer information