Ford 2011 Econoline Owner's Manual page 209

Driving
VEHICLE USED AS A STATIONARY POWER SOURCE
Auxiliary equipment called power take-off or PTO, is often added to the
engine or transmission to operate utility equipment. Examples include a
wheel-lift for tow trucks, cranes, tools for construction or tire service and
pumping fluids. PTO applications draw auxiliary horsepower from the
powertrain, often while the vehicle is stationary. In this condition, there
is limited cooling air flow through the radiator and around the vehicle
that normally occurs when a vehicle is moving. The aftermarket PTO
system installer, having the most knowledge of the final application, is
responsible for determining whether additional chassis heat protection or
powertrain cooling is required, and alerting the user to the safe and
proper operation.
Your vehicle is qualified for use as a stationary power source, within
limits detailed in the Ford Truck Body Builders Layout Book, found at
www.fleet.ford.com/truckbbas, and through the Ford Truck Body Builders
Advisory Service.
Gas engine vehicles are qualified for up to 10 minutes of continuous
operation as a stationary power source, due to the potential for the
normal venting of fuel vapors. Further consult your aftermarket PTO
installer, since the duration of operation limit for the aftermarket PTO
may be less than the vehicle is capable of.
DRIVING THROUGH WATER
If driving through deep or standing
water is unavoidable, proceed very
slowly especially when the depth is
not known. Never drive through
water that is higher than the bottom
of the wheel rims (for cars) or the
bottom of the hubs (for trucks).
When driving through water, traction or brake capability may be limited.
Also, water may enter your engine's air intake and severely damage your
engine or your vehicle may stall. Driving through deep water where
the transmission vent tube is submerged may allow water into the
transmission and cause internal transmission damage.
Once through the water, always dry the brakes by moving your
vehicle slowly while applying light pressure on the brake pedal.
Wet brakes do not stop the vehicle as quickly as dry brakes.
209
2011 Econoline (eco)
Owners Guide, 1st Printing
USA (fus)