FORD 1999 E-450 - Manual (Page 144)

WRECKER TOWING
If you need to have your vehicle towed, contact a professional towing
service or, if you are a member, your roadside assistance center.
It is recommended that your vehicle be towed with a wheel lift or flatbed
equipment.
A towing manual is available from Ford Motor Company for all authorized
tow truck operators. Have your tow truck driver refer to this manual for
proper hook-up and towing procedures for your vehicle.
Roadside emergencies
144