wheel FORD BRONCO 1988 Owner's Manual

197
*
[DR17660(B F )06/94]
Touch Drive system indicator lights
*
[DR17690(B F )03/91]
A 4x4 indicator light and a LOW RANGE
indicator light are located at the lower right of
the instrument cluster. In addition, two small
amber lights are located near the Touch Drive
system buttons. The amber light to the left of the
4x4 button will light up at the same time as the
4x4 instrument panel light. The amber light to
the left of the LOW RANGE light will light up
at the same time as the instrument panel LOW
RANGE light.
*
[DR17750(B F )06/94]
q
Two Wheel Drive mode Ð Neither the 4x4
nor the LOW RANGE lights are lit.
*
[DR17780(B F )06/94]
q
4x4 mode Ð Only the 4x4 light is lit.
*
[DR17810(B F )06/94]
q
4x4 LOW RANGE mode Ð Both the 4x4 and
LOW RANGE lights are lit.
*
[DR17840(B F )06/94]
To shift from Two-Wheel Drive to 4x4:
*
[DR17871(B F )06/94]
To shift into 4x4, push the 4x4 button located on
the instrument panel. This shift can be done at a
stop or at speeds up to 55 miles per hour
(88 km/h). When the vehicle is driven, the
automatic locking hubs will engage. If the
vehicle is stopped while in 4x4 and the vehicle
direction is reversed from the previous direction,
the automatic locking hubs will momentarily
disengage and reengage. The automatic locking
hubs may click as they automatically engage in
the new direction.
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*
[DR17900(B F )05/91]
one third page art:0020634-B
Touch drive electric shift switch
*
[DR17945(B F )06/92]
Ð At extremely low temperatures, it may be
necessary to slow down or even stop to shift
from two wheel drive to 4x4.
*
[DR17960(B F )06/94]
Ð The initial shift from two-wheel drive to 4x4
while the vehicle is moving can cause some
momentary clunk and ratcheting sounds. This is
the front drivetrain coming up to speed and the
automatic locking hubs engaging and is not a
cause for concern.
*
[DR17990(B F )12/91]
Ð Because of possible damage to powertrain
components, never shift from Two-Wheel Drive
to 4x4 with the rear wheels slipping.
*
[DR18020(B F )06/94]
To shift from 4x4 to Two-Wheel Drive:
*
[DR18050(B F )06/94]
Push the 4x4 button; the 4x4 lamp on the
instrument cluster will go out indicating the
vehicle is in Two-Wheel Drive. This can be done
at any speed. To disengage the automatic
locking hubs, operate the vehicle in Two-Wheel
Drive in the opposite direction for approximately
10 feet (3 meters) in a straight line.
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199
*
[DR18080(B F )06/94]
For example:
*
[DR18110(B F )06/94]
If you were driving the vehicle forward in
4x4, the automatic locking hubs will
disengage the next time the vehicle is driven
in reverse in Two-Wheel Drive for
approximately 10 feet (3 meters) in a straight
line.
*
[DR18140(B F )06/94]
If you were driving the vehicle in reverse in
4x4, the automatic locking hubs will
disengage the next time the vehicle is driven
forward in Two-Wheel Drive for
approximately 10 feet (3 meters) in a straight
line.
*
[DR18170(B F )01/95]
Operating in two-wheel drive mode with the
hubs locked increases fuel consumption, noise,
vibration, and wear. For prolonged two-wheel
drive operation on dry pavement, disengagement
of the automatic locking hubs, which is not
required for two-wheel drive operation, stops all
movement of front-wheel drive components
while operating in two-wheel drive.
*
[DR18230(B F )03/91]
To shift from 4x4 to 4x4 LOW RANGE:
*
[DR18290(B F )06/92]
Stop the vehicle and place the automatic
transmission in NEUTRAL or depress the clutch
on vehicles with a manual transmission. Push
the LOW RANGE button on the instrument
panel to shift the transfer case from 4x4 to 4x4
LOW RANGE. Both the 4x4 and LOW RANGE
lights are now lit.
*
[DR18300(B F )08/94]
NOTE: The vehicle must already be in 4x4
before pushing the Low Range Button.
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200
*
[DR18320(B F )03/91]
To shift from 4x4 LOW RANGE to 4x4:
*
[DR18380(B F )06/94]
Stop the vehicle and place the automatic
transmission into NEUTRAL or depress the
clutch on vehicles with a manual transmission.
Push the LOW RANGE button on the instrument
panel to shift the transfer case from 4x4 LOW
RANGE to 4x4.
*
[DR19200(B F )01/89]
Driving Off Road with 4-Wheel
Drive
*
[DR19300(B F )11/89]
Most vehicles with four-wheel drive are
especially equipped for driving on sand, snow,
mud, or rough terrain and have operating
characteristics that are somewhat different from
conventional vehicles, both off and on the road.
The driving tips below will help you learn to
use four-wheel drive.
*
[DR19400(B F )10/94]
q
Do not use 4WD LOW on dry, hard-surfaced
roads.
*
[DR19600(B F )11/89]
q
Special maintenance procedures are necessary
after operating with drive components in
water.
*
[DR19700(B F )08/94]
q
Manual locking hubs must be in LOCK
position before shifting into four-wheel drive.
*
[DR19800(B F )11/89]
When using four-wheel drive, maintain steering
wheel control at all times, especially in rough
terrain. Since sudden changes in terrain can
result in abrupt steering wheel motion, make
sure you grip the steering wheel rim from the
outside. Do not grip the spokes.
*
[DR19900(B F )05/90]
Drive cautiously to avoid vehicle damage from
concealed objects such as rocks and stumps.
Know the terrain or examine maps of the area in
question before driving. Map out your route
beforehand. To maintain steering and braking
control of your vehicle, you must have all four
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201
tires on the ground, and they must be rolling,
not sliding or spinning.
*
[DR19925(B F )11/89]
Transmission upshift in 4x4 with transfer case in
4L may be quite firm due to large total gear
reduction. This condition is normal.
*
[DR20000(B F )11/89]
Sand
*
[DR20100(B F )11/89]
When driving over sand, try to keep all four
wheels of the vehicle on the most solid area of
the trail. Do not reduce the tire pressures but
shift to a lower gear and drive steadily through
the terrain. Apply accelerator slowly and avoid
spinning the wheels.
*
[DR20200(B F )11/89]
Mud and Water
*
[DR20300(B F )12/89]
When driving through water, determine the
depth; avoid water higher than the bottom of
the hubs (if possible) and proceed slowly. If the
ignition system gets wet, the vehicle may stall.
*
[DR20400(B F )11/89]
Once through water, always try the brakes. Wet
brakes do not stop the vehicle as effectively as
dry brakes. Drying can be improved by moving
your vehicle slowly, while applying light
pressure on the brake pedal.
*
[DR20500(B F )11/89]
After driving through mud, clean off residue
stuck to rotating driveshafts and tires. Excess
mud stuck on tires and rotating driveshafts
causes an imbalance which could damage drive
components.
*
[DR20525(B F )07/94]
NOTE: If the transmission and transfer case is
submerged in water, their fluids should
be checked and changed, if necessary.
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202
*
[DR20650(B )11/89]
Additional Special Driving
Instructions for Utility Vehicles
*
[DR20701(B F )11/89]
Driving on Hill or Slope Terrain
*
[DR20800(B F )08/94]
When driving on a hill, it may be necessary to
travel diagonally up or down. Avoid driving
crosswise or turning on steep slopes, you could
lose traction and slip sideways. Drive straight
up, straight down or avoid the hill completely.
Know the conditions on the other side of a hill
before driving over the crest.
*
[DR20900(B F )11/89]
When climbing a steep hill, start in a lower gear,
rather than finding it necessary to downshift
from a higher gear after the ascent has started.
This reduces strain on the engine and the
possibility of stalling.
*
[DR21000(B F )11/89]
When descending a steep hill avoid sudden
braking. Rapid pumping of the brake pedal will
help slow the vehicle and still maintain steering
control.
*
[DR21101(B F )11/89]
Driving on Snow or Ice
*
[DR21200(B F )10/90]
A four-wheel drive vehicle has advantages over
two-wheel drive vehicles in snow and ice but
can skid like any other vehicle. If so equipped,
keep the vehicle in four-wheel drive if icy or
slippery conditions exist.
*
[DR21300(B F )11/89]
Avoid sudden applications of power and quick
changes of direction on snow or ice. Apply the
accelerator slowly and steadily when starting
from a full stop.
[DR21312(B F )05/95]
All utility-type and Four-Wheel Drive vehicles
have special design and equipment features to
make them capable of performing in a wide
variety of off-road applications. Specific design
characteristics give them higher centers of
gravity than ordinary passenger cars.
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203
*
[DR21325(B F )05/95]
RWARNING
All utility and four-wheel drive vehicles
are not designed for cornering at speeds
as high as passenger cars any more than
low-slung sports cars are designed to
perform satisfactorily under off-road
conditions. Avoid sharp turns or abrupt
maneuvers in these vehicles.
%
*
[DR21400( ALL)03/95]
Brakes
*
[DR21500( ALL)01/93]
Front Disc Brakes
*
[DR21600( ALL)03/94]
The front disc brakes are self-adjusting. They do
not require service other than periodic inspection
for pad wear.
*
[DR21900(BEF )10/94]
Rear Drum Brakes
*
[DR22000(BEF )03/95]
The rear drum brakes are self-adjusting.
Automatic adjustment occurs when the brakes
are applied while ªbacking up.º If normal
operation does not include much backing, adjust
the brakes when they seem ªlow,º using the
procedure underIf Brakes Do Not Grip Well or
Pedal is Lowin this chapter.
*
[DR22100( ALL)11/89]
Hydraulic Power Brakes
*
[DR22200(BEF )08/94]
The hydraulic brake system is made up of two
independent hydraulic circuits. One hydraulic
circuit supplies fluid to the front disc brakes and
the other hydraulic circuit supplies fluid to the
rear drum brakes. These two circuits are
supplied by a common hydraulic brake fluid
reservoir, with a fluid level sensor.
*
[DR22300( ALL)11/89]
The brake light in the instrument cluster will
light for low brake fluid in the common brake
fluid reservoir.
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204
*
[DR22400( ALL)05/95]
RWARNING
An increase in pedal travel will result in
reduced braking capability. The brake
system should be checked immediately.
[DR22905(B )08/94]
Anti-lock Brake System
*
[DR22910(B )08/94]
Your vehicle is equipped with a Four Wheel
Anti-lock Braking System (4WABS). The 4WABS
helps the driver to maintain vehicle control by
preventing wheel lockup during hard braking.
*
[DR22915(BE )03/94]
The 4WABS operates with a computer that is
able to optimize vehicle control during braking
on varying tire and road conditions by
modulating the brake pressure at each of the
front wheels and the rear axle. This ªpumping
actionº is similar to the driver ªpumpingº the
brakes but happens at a much faster rate.
*
[DR22920(BE )05/95]
RWARNING
The Anti-lock system does NOT assist the
vehicle in stopping quickly on wet or icy
surfaces. Heavy braking combined with
poor road conditions could cause you to
lose steering control of your vehicle.
*
[DR22925(BE )10/94]
Using anti-lock brakes
*
[DR22930(BE )05/94]
The operation of a vehicle with 4WABS is not
similar to the operation of normal brakes. Some
differences exist and are listed below:
*
[DR22935(BE )10/94]
q
Apply the brake steadily. In the event of a
panic stop, do NOT ªpumpº the brakes.
ªPumpingº the brakes during an Anti-lock
stop will diminish braking effectiveness.
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207
*
[DR23400(BEF )11/89]
RWARNING
Modifications to the suspension spring
rates and/or vehicle ride height may
adversely affect vehicle stopping ability.
*
[DR23500(BEF )07/92]
If Brakes Pull
*
[DR23600(BEF )07/92]
q
Check tire pressure
*
[DR23700(BEF )07/92]
q
Perform the self-adjustment procedure
described underIf Brakes Do Not Grip Well or
Pedal is ªLow.º
*
[DR23800(BEF )05/95]
If pull occurs during the first 500 miles
(800 km), make 10 moderately fast stops from
40 mph (65 km/h) and then perform the
self-adjustment procedure above. It may be
necessary to repeat this operation to properly
seat new brake linings and pads.
*
[DR24000( ALL)01/93]
Stopping Distances
*
[DR24100( ALL)11/89]
Stopping distances vary with different loads and
driving conditions. Use caution when
encountering new conditions and acquaint
yourself with vehicle performance. Take full
advantage of engine braking power when
slowing down.
%*
[DR24200( ALL)01/95]
Applying the Brakes
*
[DR24300( ALL)05/95]
Apply the brake pedal gradually. Use the
ªsqueezeº technique Ð push on the brake pedal
with a steadily increasing force. This allows the
wheels to continue to roll while you are slowing
down, which lets you steer properly.
*
[DR24400( ALL)05/95]
RWARNING
Do not drive with your foot resting on the
brake pedal. This will increase your
vehicle's stopping distance and may also
cause brake damage.
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210
*
[DR25100( ALL)01/95]
The parking brake is not designed to stop a
moving vehicle, but you can use the parking
brake to stop your vehicle in an emergency if
the normal brakes fail. However, since the
parking brake applies only the rear brakes, the
stopping distance will increase greatly and the
handling of your vehicle will be adversely
affected.
*
[DR25200( ALL)01/95]
Driving Under Special Conditions
*
[DR25250( ALL)01/95]
Tips for Safe Driving
*
[DR25301( ALL)05/95]
As with any new vehicle, yours may drive and
handle differently from your previous vehicle.
Use care until you become accustomed to its
various features and driving characteristics.
*
[DR25350( ALL)03/95]
Operate your vehicle within reasonable limits.
Sudden acceleration, deceleration, turning, or
combinations of these maneuvers can cause a
vehicle to behave differently than anticipated.
*
[DR25501( ALL)02/95]
Wheel Spin
*
[DR25550( ALL)11/92]
q
Extreme acceleration can cause the rear
wheels to spin, perhaps resulting in reduced
steering control.
*
[DR25601( ALL)05/90]
If the wheels spin during vehicle start-up, shift
to a different gear:
*
[DR25750(B F )03/93]
q
Automatic Overdrive 4R7OW: use 2 (Second)
*
[DR25800( ALL)03/93]
q
Electronic 4-Speed Automatic Transmission
E4OD: use 2 (Second)
*
[DR25950(B F )05/90]
q
Mazda R2 5-Speed Overdrive Manual: use 2
(Second)
*
[DR26301( ALL)01/89]
Move forward slowly and evenly. If this does
not work, try rocking the vehicle.
*
[DR26401(B F )05/91]
For 4x4 vehicles, engage 4WD, and try to drive
away.
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