transmission FORD BRONCO 1988 Owner's Guide

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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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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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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212
*
[DR27150(B F )05/95]
RWARNING
To avoid losing control on slippery roads,
do not downshift into Low with the
automatic transmission when moving
faster than 20 mph (32 km/h). Do not
downshift into First with the manual
transmission when moving faster than
5 mph (8 km/h).
*
[DR27350(B F )06/94]
RWARNING
The rear antilock brake system may not
prevent brake lock-up on extremely
slippery surfaces. Rear brake lock-up may
also occur while driving in four-wheel
drive because the transfer case couples the
front and rear axles together.
*
[DR27450(BEF )03/95]
Traction-Lok Rear Axle (If equipped)
*
[DR27501(BEF )03/95]
This axle provides added drive away traction on
slippery surfaces, particularly when one or more
wheels are on a surface with poor traction.
*
[DR27550(BEF )03/93]
Extended use of other than matching size tires
on a Traction-Lok rear axle could result in a
permanent reduction in effectiveness. This loss of
effectiveness does not affect normal driving and
should not be noticeable to the driver.
*
[DR27601(BEF )05/95]
RWARNING
To avoid injury, never run the engine
with one wheel off the ground, such as
when changing a tire.
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213 %
*
[DR27651( ALL)01/95]
High water
*
[DR27675( ALL)06/92]
Never attempt to cross water that is fast flowing
or of unknown depth.
*
[DR27701( ALL)05/90]
Do not drive through flooded areas unless you
are sure that the water is below the bottom of
the wheel hubs.
*
[DR27750( ALL)04/94]
If you must drive through high water, drive
slowly. You may have limited traction or wet
brakes, so allow extra stopping distance because
your vehicle will not stop as quickly as usual.
*
[DR27801( ALL)01/95]
After you drive through the standing water,
apply your brakes gently several times as your
vehicle moves slowly. This helps to dry the
brakes.
*
[DR27820( ALL)07/94]
NOTE: If the transmission and transfer case is
submerged in water, their fluids should
be checked and changed, if necessary.
*
[DR27825( ALL)03/93]
NOTE: All rear axle lube quantities must be
replaced every 100,000 miles
(160,000 km) or if the axle has been
submerged in water. Otherwise, the
lube should not be checked or changed
unless a leak is suspected or repair
required.
*
[DR27850( ALL)11/89]
Rocking the vehicle
*
[DR27901(B F )05/90]
For 4x4 vehicles, engage 4WD LOW, when the
vehicle gets stuck and try to drive away.
*
[DR27950( ALL)05/95]
If your vehicle gets stuck (for example, in mud
or snow), you may rock it out of the spot. Shift
in a steady rhythm between forward and reverse
gears. Allow the transmission to fully engage,
then press lightly on the accelerator. Do not rock
the vehicle for more than a few minutes. This
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214may overheat the engine and transmission,
causing damage to both. In addition, other
vehicle systems and components may also be
damaged.
*
[DR27975( ALL)05/95]
RWARNING
Do not spin the wheels at over 35 mph
(56 km/h). The tires may fail and injure a
passenger or bystander.
*
[DR28050(BEF )03/95]
Driving With a Heavy Load
*
[DR28101(BEF )01/95]
There are limits to the amount of weight your
vehicle can carry or tow. The total weight of
your vehicle, plus the weight of the passengers
and cargo, should never be more than the Gross
Vehicle Weight Rating (GVWR). Also, the weight
that your vehicle carries over the front axle and
rear axle should never be more than the Gross
Axle Weight Rating (GAWR) for the respective
axle.
*
[DR28150(BEF )01/95]
The weight limits of your vehicle's tires affect
the GVWR or GAWR limitations. Usage of
replacement tires with higher weight limit than
originals does not increase GVWR or GAWR.
Usage of lower capacity replacement tires may
lower GVWR and GAWR limitations.
*
[DR28201(BEF )02/95]
RWARNING
If the GVWR or the GAWR specified on
the Safety Compliance Certification Label
is exceeded, your vehicle may be damaged
or you may lose control and injure
someone.
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215
*
[DR28250(B F )03/91]
Heavy duty front suspension package
(option)
*
[DR28301(B F )03/91]
This optional front suspension package is
designed to handle the additional loads that will
be imposed on the vehicle by adding aftermarket
equipment, such as a snowplow. Refer to the
Safety Compliance Certification Label for details.
*
[DR28750( ALL)01/93]
Vehicle/Trailer Loads
*
[DR28801( ALL)06/92]
All vehicles may tow a Class I trailer provided
the Gross Combined Weight (GCW) is less than
or equal to the GVWR shown on the Safety
Compliance Certification Label. For heavier
trailer applications, refer to the towing
information found later in this chapter.
*
[DR28950(BEF )02/95]
Trailer Towing (may require trailer tow
option package)
*
[DR29001( ALL)03/91]
Towing a trailer puts additional loads on your
vehicle's engine, transmission, axle, brakes, tires
and suspension. For your safety and for the
good of your vehicle, use the right equipment
for the type of trailer you tow.
[DR29010(B F )05/95]
If your trailer is equipped with electric brakes,
auxiliary battery, or back-up lamps, the optional
7 wire trailer towing electrical hook-up will be
required on the vehicle.
*
[DR29025( ALL)09/92]
Your trailer towing capability will vary based on
the standard and optional equipment on your
vehicle. Refer to the followingVehicle
Loading/Towing Informationand the Trailer
Towing Tables to determine the specific towing
capability of your vehicle.
*
[DR29050( ALL)02/92]
q
Stay within the load limits when you tow.
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221
weight for each engine/transmission
combination, any required option weight for
trailer towing and the weight of the driver from
the GCWR for the towing vehicle.
*
[DR31160( ALL)06/92]
Maximum Trailer Weight
*
[DR31170( ALL)06/92]
The maximum weight of a trailer the loaded
vehicle is permitted to tow. The maximum
weight of the trailer is determined by subtracting
the weight of the loaded towing
vehicle (including passengers and cargo) from
the GCWR for the towing vehicle.
*
[DR31180( ALL)06/92]
Trailer Weight Range
*
[DR31190( ALL)06/92]
The trailer weight range is a specified range by
weight, which the trailer must fall within,
ranging from zero to the maximum trailer
weight rating.
*
[DR31301( ALL)03/91]
Calculating The Load
*
[DR31350( ALL)03/91]
To know how much weight your vehicle can
carry:
*
[DR31401( ALL)12/91]
q
Obtain ratings from your Safety Compliance
Certification Label, and the Trailer towing
specifications in the owner guide (refer to the
Index)
*
[DR31450( ALL)09/93]
Ð Refer to the following sample illustration
to locate the various ratings on your
Safety Compliance Certification Label.
*
[DR31501( ALL)03/91]
Ð If you do not plan on pulling a trailer, do
not include these ratings into your
calculations.
*
[DR31550( ALL)03/91]
q
Weigh your vehicle as you customarily
operate the vehicle without cargo.
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225
*
[DR32350( ALL)02/95]
RWARNING
If the GVWR or the GAWR specified on
the Safety Compliance Certification Label
is exceeded, your vehicle may be damaged
or you may lose control and injure
someone.
*
[DR32401( ALL)05/95]
RWARNING
Towing trailers beyond the maximum
recommended gross trailer weight could
result in engine damage, transmission/axle
damage, structural damage, loss of control,
and personal injury.
*
[DR32450( ALL)03/91]
Using the Safety Compliance Certification Label
find the axle code number and the engine type
for your vehicle.
*
[DR32500( ALL)03/91]
Use the appropriate Maximum Gross Combined
Weight Rating (GCWR) chart to find the
Maximum GCWR for your type engine and rear
axle ratio.
*
[DR32551( ALL)03/91]
Subtract your Loaded Vehicle Weight from the
Maximum GCWR found in the chart. This is the
maximum trailer weight your vehicle can tow
and must fall below the maximum shown under
Trailer Weight on the chart.
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