Ford F-53 Motorhome Chassis (2017 year). Manual - part 12

Maximum trailer

weight

Maximum

GCWR

Maximum

GVWR

Rear axle

ratio

4000 lb (1814 kg)

26000 lb

(11793 kg)

22000 lb

(9979 kg)

5.38

6500 lb (2948 kg)

26000 lb

(11793 kg)

22000 lb

(9979 kg)

5.38

7700 lb (3493 kg)

29700 lb

(13472 kg)

22000 lb

(9979 kg)

5.38

6000 lb (2721 kg)

30000 lb

(13608 kg)

24000 lb

(10886 kg)

6.17

4000 lb (1814 kg)

30000 lb

(13608 kg)

26000 lb

(11793 kg)

6.17

ESSENTIAL TOWING CHECKS

Follow these guidelines for safe towing:
•

Do not tow a trailer until you drive your
vehicle at least 1,000 mi (1,600 km).

•

Consult your local motor vehicle laws
for towing a trailer.

•

See the instructions included with
towing accessories for the proper
installation and adjustment
specifications.

•

Service your vehicle more frequently if
you tow a trailer. See your scheduled
maintenance information.

•

If you use a rental trailer, follow the
instructions the rental agency gives
you.

Another chapter of this manual contains
load specification terms found on the tire
label and Safety Compliance label and
instructions on calculating your vehicle's
load.  See Load Limit (page 39).

Remember to account for the trailer
tongue weight as part of your vehicle load
when calculating the total vehicle weight.

Hitches

Do not use a hitch that either clamps onto
the bumper or attaches to the axle.

Distribute the trailer load so 10-15% of the
total trailer weight is on the tongue.

Weight-Distributing Hitches

WARNING

Do not adjust a weight-distributing
hitch to any position where the rear
bumper of the vehicle is higher than

it was before attaching the trailer. Doing
so will defeat the function of the
weight-distributing hitch, which may cause
unpredictable handling, and could result
in serious personal injury.

When hooking-up a trailer using a
weight-distributing hitch, always use the
following procedure:

1.

Park the loaded vehicle, without the
trailer, on a level surface.

2. Measure the height to the top of your

vehicle’s front wheel opening on the
fender. This is H1.

3. Securely attach the loaded trailer to

your vehicle without the
weight-distributing bars connected.

4. Measure the height to the top of your

vehicle’s front wheel opening on the
fender a second time. This is H2.

5. Install and adjust the tension in the

weight-distributing bars so that the
height of your vehicle’s front wheel
opening on the fender is approximately
halfway between H1 and H2.

6. Check that the trailer is level or slightly

nose down toward your vehicle. If not,
adjust the ball height accordingly and
repeat Steps 1-6.

7.

Lock the bar tension adjuster in place.

8. Check that the trailer tongue securely

attaches and locks onto the hitch.

9. Install safety chains, lighting and trailer

brake controls as required by law or the
trailer manufacturer.

Safety Chains

Note: Never attach safety chains to the
bumper.

Always connect the safety chains to the
hook retainers of your vehicle hitch.

To connect the safety chains, cross them
under the trailer tongue and allow enough
slack for turning tight corners. Do not allow
the chains to drag on the ground.

Trailer Brakes

WARNING

Do not connect a trailer's hydraulic
brake system directly to your
vehicle's brake system. Your vehicle

may not have enough braking power and
your chances of having a collision greatly
increase.

Electric brakes and manual, automatic or
surge-type trailer brakes are safe if you
install them properly and adjust them to
the manufacturer's specifications. The
trailer brakes must meet local and federal
regulations.

The rating for the tow vehicle's braking
system operation is at the gross vehicle
weight rating, not the gross combined
weight rating.

Separate functioning brake systems
are required for safe control of towed
vehicles and trailers weighing more
than 1500 pounds (680 kilograms)
when loaded.

Trailer Lamps

WARNING

Never connect any trailer lamp wiring
to the vehicle's tail lamp wiring; this
may damage the electrical system

resulting in fire. Contact your authorized
dealer as soon as possible for assistance
in proper trailer tow wiring installation.
Additional electrical equipment may be
required.

Trailer lamps are required on most towed
vehicles. Make sure all running lights, brake
lights, direction indicators and hazard lights
are working.

Before Towing a Trailer

Practice turning, stopping and backing up
to get the feel of your vehicle-trailer
combination before starting on a trip.
When turning, make wider turns so the
trailer wheels clear curbs and other
obstacles.

When Towing a Trailer

•

Do not drive faster than 70 mph
(113 km/h) during the first 500 mi
(800 km).

•

Do not make full-throttle starts.

•

Check your hitch, electrical connections
and trailer wheel lug nuts thoroughly
after you have traveled 50 mi (80 km).

•

When stopped in congested or heavy
traffic during hot weather, place the
gearshift in park (P) to aid engine and
transmission cooling and to help air
conditioning performance.

•

Switch off the speed control with
heavy loads or in hilly terrain. The
speed control may turn off
automatically when you are towing on
long, steep grades.

•

Shift to a lower gear when driving down
a long or steep hill. Do not apply the
brakes continuously, as they may
overheat and become less effective.

•

If your transmission is equipped with a
Grade Assist or Tow/Haul feature, use
this feature when towing. This provides
engine braking and helps eliminate
excessive transmission shifting for
optimum fuel economy and
transmission cooling.

•

Allow more distance for stopping with
a trailer attached. Anticipate stops and
brake gradually.

•

Avoid parking on a grade. However, if
you must park on a grade:

1.

Turn the steering wheel to point your
vehicle tires away from traffic flow.

2. Set your vehicle parking brake.

3. Place the automatic transmission in

park (P).

4. Place wheel chocks in the front and

back of the trailer wheels. (Chocks not
included with vehicle.)

Launching or Retrieving a Boat or
Personal Watercraft (PWC)

Note: Disconnect the wiring to the trailer
before backing the trailer into the water.

Note: Reconnect the wiring to the trailer
after removing the trailer from the water.

When backing down a ramp during boat
launching or retrieval:
•

Do not allow the static water level to
rise above the bottom edge of the rear
bumper.

•

Do not allow waves to break higher
than 6 in (15 cm) above the bottom
edge of the rear bumper.

Exceeding these limits may allow water to
enter vehicle components:
•

Causing internal damage to the
components.

•

Affecting driveability, emissions and
reliability.

Replace the rear axle lubricant anytime
the rear axle has been submerged in water.
Water may have contaminated the rear
axle lubricant, which is not normally
checked or changed unless a leak is
suspected or other axle repair is required.

TOWING THE VEHICLE ON
FOUR WHEELS

Emergency Towing

WARNING

If your vehicle has a steering wheel
lock make sure the ignition is in the
accessory or on position when being

towed.

If your vehicle becomes inoperable
(without access to wheel dollies,
car-hauling trailer, or flatbed transport
vehicle), it can be flat-towed (all wheels
on the ground, regardless of the powertrain
and transmission configuration) under the
following conditions:
•

Your vehicle is facing forward for
towing in a forward direction.

•

Place the transmission in position N. If
you cannot move the transmission into
N, you may need to override it.

•

Maximum speed is 35 mph (56 km/h).

•

Maximum distance is 50 mi (80 km).