2004 JEEP WRANGLER wheel torque

Torque Converter Clutch
A feature designed to improve fuel economy has been
added to the automatic transmission of this vehicle. A
clutch within the torque converter engages automatically
at calibrated speeds. This may result in a slightly differ-
ent feeling or response during normal operation in high
gear. When the vehicle speed drops or during accelera-
tion, the clutch automatically and smoothly disengages.
FOUR±WHEEL DRIVE OPERATION
(COMMAND-TRACŸ OR ROCK-TRACŸ) Ð IF
EQUIPPEDOperating Instructions/Precautions
The transfer case provides four mode positions Ð two
(rear) wheel drive high range, four wheel drive high
range, neutral, and four wheel drive low range.
This transfer case is intended to be driven in the two
wheel drive (2H) position for normal street and highway
conditions such as dry hard surfaced roads.
In the events when additional traction is required, the
transfer case 4H and 4L positions can be used to lock the
front and rear driveshafts together and force the front
and rear wheels to rotate at the same speed. This is
accomplished by simply moving the shift lever to these
positions. The 4H and 4L positions are intended for loose,
slippery road surfaces only. Driving in the 4H and 4L
positions on dry hard surfaced roads may cause in-
creased tire wear and damage to the driveline compo-
nents.
The 4WD indicator light, located in the instrument panel,
alerts the driver that the vehicle is in four wheel drive
and that the front and rear driveshafts are locked to-
gether. This light illuminates when the transfer case is
shifted to either the 4H or 4L positions.
170 STARTING AND OPERATING

NOTE:Shifting into or out of 4L is possible with the
vehicle completely stopped, however, difficulty may oc-
cur due to the mating teeth not being properly aligned.
Several attempts may be required for clutch teeth align-
ment and shift completion to occur. The preferred
method is with the vehicle rolling at 2 to 3 mph (3 to 5
km/h). Avoid attempting to engage or disengage 4L with
the vehicle moving faster than 2 to 3 mph (3 to 5 km/h).
WARNING!
Failure to engage a position completely can cause
transfer case damage or loss of power and vehicle
control. You could have an injury accident. Do not
drive the vehicle unless the transfer case is fully
engaged.
TRAC-LOKŸ REAR AXLE
The Trac-LokŸ rear axle provides a constant driving
force to both rear wheels and reduces wheel spin caused
by the loss of traction at one driving wheel. If traction
differs between the two rear wheels, the differential
automatically proportions the usable torque by providing
more torque to the wheel that has traction.
Trac-LokŸ is especially helpful during slippery driving
conditions. With both rear wheels on a slippery surface, a
slight application of the accelerator will supply maxi-
mum traction. When starting with only one rear wheel on
an excessively slippery surface, slight application of the
parking brake may be necessary to gain maximum trac-
tion.
STARTING AND OPERATING 173
5

Traction Downhill
Shift the transmission into a low gear and transfer case to
4L (Low) range. Let the vehicle go slowly down the hill
with all four wheels turning against engine compression
drag. This will permit you to control the vehicle speed
and direction.
After Driving Off-Road
Off-road operation puts more stress on your vehicle than
does most on-road driving. After driving off-road, it is
always a good idea to check for damage.
²Completely inspect the underbody of your vehicle.
Check tires, body structure, steering, suspension, and
exhaust system for damage.
²Check threaded fasteners for looseness, particularly on
the chassis, drivetrain components, steering, and sus-
pension. Retighten them, if required, and torque to the
values specified in the Service Manual.
²Check for accumulations of plants or brush. These
things could be a fire hazard, or they might hide
damage to fuel lines, brake hoses, axle pinion seals,
and propeller shafts.
²After extended operation in mud, sand, water, or
similar dirty conditions, have brake drums, brake
linings, and axle yokes inspected and cleaned as soon
as possible.
WARNING!
Abrasive material in any part of the brakes may
cause excessive wear or unpredictable braking. You
might not have full braking power when you need it
to prevent an accident. If you have been operating
your vehicle in dirty conditions, get your brakes
checked and cleaned as necessary.
²If you experience unusual vibration after driving in
mud, slush or similar conditions, check the wheels for
packed material. Packed foreign material can cause a
wheel imbalance and freeing the wheels will correct
the situation.
STARTING AND OPERATING 183
5

Tire and Loading Information Placard....... 188
Tire Identification Number (TIN)........... 187
Tire Markings......................... 184
Tire Safety Information................... 184
Tires ................................ 191
Air Pressure......................... 192
Alignment.......................... 195
Alignment and Balance................. 195
Balancing........................... 195
Chains............................. 196
Changing........................ 211,213
General Information................... 191
High Speed......................... 193
Inflation Pressures.................... 192
Jacking............................. 214
Load Capacity....................... 188
Pressure Label....................... 192
Radial............................. 193
Replacement......................... 194
Rotation............................ 196
Sizes............................... 185
Spare Tire........................... 213
Spinning............................ 193Tread Wear Indicators.................. 194
Wheel Nut Torque.................... 215
To Open Hood.......................... 55
Torque Converter Clutch................. 170
Towing...........................202,219
Disabled Vehicle...................... 219
Recreational......................... 205
Trailering........................... 202
Trac-Lok Rear Axle...................... 173
Trailer Towing......................... 202
Hitches............................. 197
Transfer Case.......................... 247
Four-Wheel-Drive Operation............. 170
Maintenance......................... 247
Transmission
Automatic.......................... 165
Maintenance......................245,246
Manual............................. 163
Shifting............................ 163
Transporting Pets........................ 39
Tread Wear Indicators................... 194
Trip Odometer......................... 119
Trip Odometer Reset Button............... 119
298 INDEX

Turn Signals.........................58,116
Underhood Fuses....................... 256
Upholstery Care........................ 252
Vacuum/Vapor Harnesses................ 242
Variance, Compass....................... 48
Vehicle Identification Number............... 7
Vehicle Modifications/Alterations............ 8
Vehicle Storage......................... 256
Vinyl Trim............................ 252
Voltmeter............................. 116
Warning Lights (Instrument
Cluster Description)..................... 116
Warnings and Cautions.................... 7Warranty Information.................... 283
Washer, Adding Fluid................... 155
Washers, Windshield.................... 238
Waxing and Polishing................... 249
Wheel Alignment and Balance............. 195
Wheel Changing....................... 211
Wheel Mounting....................... 215
Wheel Nut Torque...................... 215
Windshield Defroster.................151,153
Windshield, Folding..................... 102
Windshield Washer Aiming............... 238
Windshield Washers...................58,238
Fluid.............................. 238
Windshield Wiper Blades................. 237
Windshield Wipers...................... 58
Wiper, Rear........................... 155
INDEX 299
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