FORD 2005 F-550 v.2 - Manual (Page 209)

and adversely affect driver and passenger safety. Frequent inspection of
vehicle chassis components is recommended if the vehicle is subjected to
heavy off-road usage.
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, tools for construction and cranes. 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. Depending on the level and duration of
auxiliary horsepower draw, vehicle conditions and surrounding
environmental conditions and other factors, this can contribute to
elevated transmission fluid temperatures and result in accelerated fluid
deterioration, fuel vapor over-pressurization, and other concerns. Ford
trucks are fully qualified for stationary PTO operation for 10 minutes or
less of continuous operation. For extended duration stationary PTO
operation (beyond 10 minutes), a diesel engine is recommended, and
further consult your aftermarket PTO installer.
Transmission Power Take-Off (PTO) Provision (if equipped)
Some vehicles with an automatic transmission may be equipped with a
“Transmission Power Take-Off Provision”, Option Code 62R. These
vehicles have a special transmission that includes a port on the left-hand
side to mount an aftermarket PTO, an internal PTO gear, and calibration
for PTO usage. The actual PTO and related equipment is not offered by
Ford Motor Company, but is installed by an aftermarket source. The PTO
gear in the transmission will drive the aftermarket PTO while driving the
vehicle. Therefore, some additional gear noise that may result is normal.
Also, the transmission upshift and downshift schedules will be reduced
by about 15% and may result in a firmer shift feel during PTO mobile
applications.
A more complete description of PTO operation is discussed in the Ford
Truck Body Builders Layout Book, found at
www.fleet.ford.com/truckbbas.
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 hubs (for trucks) or the
bottom of the wheel rims (for cars). When driving through water,
2005 F250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA_English (fus)
Driving
209