four wheel drive FORD BRONCO 1988 Owners Manual

5
*
[IN04650(B M)06/92]
Special Notice
*
[IN04700(B )11/89]
NOTICE TO OWNERS OF
UTILITY-TYPE VEHICLES
*
[IN04810(B )11/89]
As with other vehicles of this type, failure to
operate this vehicle correctly may result in loss
of control or an accident. Be sure to read the
Additional Special Driving Instructions for Utility
Vehiclesin this book and the special supplement
included with four-wheel drive vehicles entitled
4-Wheeling with Ford.
*
[IN04850(B )03/95]
AMBULANCE PACKAGES
*
[IN04875(B )03/95]
RWARNING
Do not use this vehicle as an ambulance.
%
*
[IN05100( ALL)05/95]
Your Vehicle Identification
Number (VIN)
*
[IN05200( ALL)05/95]
Your Vehicle Identification Number (VIN) is the
same as the warranty number that appears on
your owner card. You should include this
number any time you write to Ford Motor
Company about your vehicle.
*
[IN05300(BEF )05/95]
The Vehicle Identification Number is attached to
your vehicle in the following places:
*
[IN05400(BEF )05/95]
q
on the metal tag attached to the top of the
instrument panel on the driver's side Ð you
can see the tag by looking through the
windshield from outside your vehicle.
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188
*
[DR15985( ALL)05/90]
NOTE: After any severe impact such as
striking large potholes, sliding into
curbs on icy roads, or a collision
involving the front end, observe the
steering wheel alignment. If the spokes
of the steering wheel seem to be in a
different position while going straight
down the road, have the front
suspension and steering checked for
possible damage.
*
[DR16101(B F )03/95]
Four-Wheel Drive (4WD)
System (If equipped)
*
[DR16130(B F )08/94]
When you select the 4WD mode, your light
truck uses all four wheels to power itself. This
increases traction, enabling you to drive your
4x4 over terrain and road conditions two-wheel
drive vehicles cannot.
*
[DR16160(B F )10/94]
Power is supplied to all four wheels through a
transfer case that allows you to select four-wheel
drive when necessary. Methods for engaging and
disengaging 4WD and low range will depend on
which system your vehicle has.
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189
*
[DR16190(B F )01/95]
4x4 Systems Ð Lever Operated
*
[DR16220(B F )06/94]
The lever operated transfer case can be placed
into four positions. The 2H position is the
two-wheel drive position in which power is
delivered only to the rear axle. The 4H position
provides four-wheel drive with power delivered
to the front and rear axles for increased traction.
The 4L position provides four-wheel drive with
power delivered to the front and rear axles
when the above average power is required at
reduced speeds. In the N (neutral) position, there
is no power delivered to either axle.
[DR16225(B F )05/95]
When the transfer case is in the N (Neutral)
position, the engine and transmission are
disconnected from the rest of the driveline.
Therefore, the vehicle is free to roll even if the
automatic transmission is in P (Park) or the
manual transmission is in gear.
*
[DR16230(B F )05/95]
RWARNING
Do not leave the vehicle unattended with
the transfer case in the N (Neutral)
position. Always set the parking brake
fully and turn off the ignition when
leaving the vehicle.
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190
*
[DR16250(B F )12/91]
two third page art:0020792-C
Transfer case selections
*
[DR16310(B F )01/95]
Four-wheel drive operation (4H or 4L) on dry
pavement is not recommended. Operating the
vehicle in four-wheel drive on dry pavement
will increase tire wear, decrease fuel economy,
and make four-wheel drive disengagement
difficult for the transfer case.
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193
*
[DR16820(B F )06/94]
To shift between 4H and 4L:
*
[DR16851(B F )05/91]
Stop the vehicle and place the automatic
transmission into NEUTRAL or depress the
clutch on manual transmission vehicles. Push the
transfer case shift knob down (toward the
ground) and at the same time pull or push the
lever straight forward or rearward (depending
on the desired position, 4H or 4L) in order to
shift the transfer case. This shift should be in
one continuous motion without pausing in the N
(neutral) position. Pausing in the neutral position
can result in gear clash and difficult shifting. If,
while shifting between 4H and 4L, the transfer
case gets stuck in the N (neutral) position or is
difficult to shift into either 4H or 4L, it may be
necessary to let the vehicle roll slightly and/or
turn off the engine (particularly on vehicles
equipped with automatic transmissions).
*
[DR16880(B F )03/91]
To shift into and out of N (neutral)
[DR16940(B )03/91]
To shift into N (neutral), stop the vehicle and
engage the parking brake. Place the automatic
transmission into NEUTRAL or depress the
clutch. From either the 4H or 4L position, push
the transfer case shift knob down (toward the
ground) and move the transfer case shift lever to
the N (neutral) position. The N (neutral) position
should only be used for vehicle towing.
*
[DR16955(B F )12/91]
NOTE: Dash mounted four wheel drive
indicator lights are off when your
vehicle is in neutral.
*
[DR17001(B F )05/91]
To shift from N (Neutral) to either 4H or 4L,
stop the vehicle and engage the parking brake.
Place the automatic transmission into NEUTRAL
or depress the clutch on manual transmission
vehicles. Push the transfer case knob down
(toward the ground) and at the same time move
the transfer case shift lever to the desired
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196lever to the N (neutral) position. The N (neutral)
position should only be used for vehicle towing.
*
[DR17490(B F )12/91]
NOTE: Dash mounted four wheel drive
indicator lights are off when your
vehicle is in neutral.
*
[DR17540(B F )01/95]
To shift from N (Neutral) to either 4H or 4L,
stop the vehicle and engage the parking brake.
Place the automatic transmission into N
(Neutral) or depress the clutch on manual
transmission vehicles. Push the transfer case shift
lever to the desired position. If it is difficult to
shift into either 4H or 4L, it may be necessary to
let the vehicle roll slightly and/or turn off the
engine (particularly on vehicles equipped with
automatic transmissions).
*
[DR17570(B F )06/94]
4x4 SYSTEMS-TOUCH DRIVE
*
[DR17601(B F )06/94]
The Touch Drive 4x4 system functions in three
modes. In Two Wheel Drive mode, power is
delivered only to the rear axle at normal road
speed. The 4H position provides four-wheel
drive with power delivered to the front and rear
axles for increased traction. The 4L position
provides four-wheel drive with power delivered
to the front and rear axles when the above
average power is required at reduced speeds.
*
[DR17630(B F )06/94]
Four wheel drive operation (4x4 or 4x4 LOW
RANGE) on dry pavement is not recommended.
Operating the vehicle in four-wheel drive on dry
pavement will increase noise, vibration, tire
wear, decrease fuel economy, and make
four-wheel drive disengagement difficult for the
transfer case.
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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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