light FORD BRONCO 1988 Workshop Manual

194position. 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).
*
[DR17030(B F )06/94]
Lever Operated System With Manual
Locking Hubs
*
[DR17060(B F )06/94]
To shift from 2H to 4H:
*
[DR17090(B F )06/94]
Stop the vehicle and engage the manual locking
hubs by turning both hub lock selector knobs
clockwise to the LOCK position. Move the
transfer case shift lever straight back to the 4H
position. After both hubs have been turned to
the LOCK position, shifts between 2H and 4H
(or 4H to 2H) may take place at any speed.
*
[DR17120(B F )03/91]
one third page art:0020146-C
Locking hub positions
*
[DR17150(B F )06/94]
q
Do not drive the vehicle in 4H or 4L with the
manual locking hubs in the FREE position.
*
[DR17180(B F )06/94]
q
Do not drive the vehicle with the left and
right manual locking hubs set to different
positions.
*
[DR17210(B F )06/94]
To shift from 4H to 2H:
*
[DR17240(B F )06/94]
Move the transfer case shift lever forward to the
2H position. This can be done at any speed.
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195
However, the front driveline will remain
engaged to the front wheels until the manual
locking hubs are disengaged. To disengage the
manual locking hubs, stop the vehicle and rotate
both hub lock selector knobs counter-clockwise
to the FREE position.
*
[DR17270(B F )06/94]
Operating in 2H with the hubs in the LOCK
position increases fuel consumption, noise,
vibration, and wear. For prolonged 2H operation
on dry pavement, set the manual locking hubs
to the FREE position.
*
[DR17301(B F )06/94]
To shift between 4H and 4L:
*
[DR17330(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 with
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 transmission).
*
[DR17390(B F )06/94]
To shift to N (neutral) from either 4H or 4L
[DR17480(B )05/91]
To shift into N (neutral), stop the vehicle and
engage the parking brake. Place the automatic
transmission into NEUTRAL or depress the
clutch on manual transmission vehicles. From
either the 4H or 4L position, push the transfer
case shift knob down (toward the ground) and
at the same time move the transfer case shift
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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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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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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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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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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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205
*
[DR22940(BE )10/94]
q
During an Anti-lock stop, the driver will
notice a brake pedal pulsation and hear some
noise from the engine compartment. This is
an indication that the 4WABS system is
working correctly and is normal.
*
[DR22945(BE )05/95]
RWARNING
The Anti-lock system does NOT decrease
the time necessary to apply the brakes.
Always leave enough room between the
vehicle in front of you and your vehicle.
*
[DR22950(BE )05/95]
4WABS driver warning light
[DR22955(BE )08/94]
The 4WABS computer continuously monitors the
system while driving for any electrical faults or
system malfunctions. In addition, the 4WABS
computer performs an initial system check called
bulb proveout when the vehicle ignition is
switched on. During bulb proveout, the amber
ªABSº light on the instrument cluster will
momentarily illuminate and then go out.
*
[DR22960(BE )03/93]
NOTE: After starting the vehicle and upon
initial drive-off, the driver may notice
a single pulse of the brake pedal and a
noise from the engine compartment.
This is part of the initial system check
and is normal.
[DR22965(BE )08/94]
Should a malfunction in the 4WABS system
occur, the amber ªABSº light on the instrument
cluster will come on and stay on indicating that
the antilock system has been shut down and the
vehicle needs to be serviced. Normal braking is
not affected unless the red brake warning light
is also illuminated.
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206
*
[DR22970(BE )10/94]
NOTE: It is important to note that when the
ABS Warning Light is illuminated the
ABS system is disabled. The vehicle
must be serviced immediately to
restore the benefits of the Anti-lock
system.
*
[DR22975(BE )10/94]
NOTE: Mobile phones or radio transmitters
not installed by Ford Motor Company
may interfere with the Anti-lock
System. Should the Anti-lock system
activate unexpectedly or the Anti-lock
Warning Light illuminate after
installation of such a unit, have the
installation of the unit checked.
*
[DR23000(BE M)12/89]
If Brakes Do Not Grip Well or Pedal is
ªLowº
*
[DR23200(BEF )11/89]
If brakes do not grip well, it may indicate the
rear drum brakes need adjustment. To do this,
drive the vehicle in reverse at 5 mph (8 km/h)
on level, dry pavement. Stop the vehicle by
firmly applying the brakes. Repeat this
procedure four or five times.
*
[DR23250( ALL)11/89]
If during normal operation the brake pedal
seems ªlowº, it may indicate the need for a
brake system inspection and/or service. You
should have your brakes checked as soon as
possible.
*
[DR23300( ALL)02/95]
Occasional brake squeal during light to moderate
stops does not affect the function of the brake
system and is normal. However, if the squeal
becomes annoyingly loud or increases
significantly in frequency of occurrence, return
the vehicle to your dealer for inspection.
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209
*
[DR24950(B F )03/95]
RWARNING
When parking, do not use the gearshift in
place of the parking brake. Turn the key
to LOCK whenever you leave your
vehicle. Always set the parking brake
fully and make sure that the gearshift is
securely latched in P (Park) (automatic
transmission) or in 1 (First) (manual
transmission). Never leave your vehicle
unattended while it is running. If you do
not take these precautions, your vehicle
may move unexpectedly and injure
someone.
[DR24970(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.
*
[DR24975(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.
*
[DR25000(B FM)03/93]
To release the parking brake, press the service
brake pedal with your right foot and pull the
parking brake release lever.
*
[DR25050( ALL)01/93]
RWARNING
If the parking brake is fully released, but
the Brake System light remains on, have
the brakes checked immediately. They
may not be working properly.
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