1988 FORD BRONCO Owners Manual

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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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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Update:Fri Jun 9 15:26:57 1995
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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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Update:Fri Jun 9 15:26:57 1995
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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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Update:Fri Jun 9 15:26:57 1995
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198
*
[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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