2007 Ram 2500 (Diesel) differential

Transmission Shifting....................291
▫Automatic Transmission With Overdrive
(68RFE) — If Equipped.................291
▫Automatic Transmission With Overdrive
(48RE) — If Equipped..................297

Manual Transmission....................303
▫Recommended Vehicle Shift Speeds........304
▫Downshifting........................305

Four-Wheel- Drive Operation — If Equipped . . . 306
▫Manually Shifted Transfer Case Operating
Information/Precautions................306
▫Shifting Procedure - Manually Shifted
Transfer Case........................308
▫Transfer Case Reminder Light............309▫Electronically Shifted Transfer Case Operating
Information/Precautions–If Equipped.......310
▫Shifting Procedure - Electronically Shifted
Transfer Case........................314

Limited-Slip Differential — If Equipped.......317

Driving On Slippery Surfaces..............318

Driving Off-Road.......................319

Parking Brake.........................320

Brake System..........................321
▫Brake Noise.........................322
▫Four-Wheel Anti-Lock Brake System........322

Power Steering........................324

Tire Safety Information...................325
▫Tire Markings........................325
272 STARTING AND OPERATING

NOTE:If steps 1 or 2 of either the Preferred or Alternate
Procedure are not satisfied prior to attempting the shift
then the desired position indicator light will flash con-
tinuously while the original position indicator light is
ON, until all requirements have been met.
NOTE:The ignition key must be ON for a shift to take
place and for the position indicator lights to be operable.
If the key is not ON then the shift will not take place and
no position indicator lights will be on or flashing.
NOTE:If your are leaving your vehicle stored for longer
than 21 days, refer to the section on “Vehicle Storage.”
LIMITED-SLIP DIFFERENTIAL — IF EQUIPPED
The limited-slip differential provides additional traction
on snow, ice, mud, sand and gravel, particularly whenthere is a difference between the traction characteristics
of the surface under the right and left rear wheels. During
normal driving and cornering, the limited-slip unit per-
forms similarly to a conventional differential. On slip-
pery surfaces, however, the differential delivers more of
the driving effort to the rear wheel having the better
traction.
The limited-slip differential is especially helpful during
slippery driving conditions. With both rear wheels on a
slippery surface, a slight application of the accelerator
will supply maximum traction. When starting with only
one rear wheel on an excessively slippery surface, slight
momentary application of the parking brake may be
necessary to gain maximum traction.
STARTING AND OPERATING 317
5

wheel. The nuts should then be tightened to recom-
mended torque. Tighten the nuts to final torque in
increments. Progress around the bolt circle, tightening
the nut opposite to the nut just previously tightened until
final torque is achieved. Recommended torques are
shown in the following chart.
Disc
WheelsType
NutStud
SizeTorque
Ft. Lbs.Torque
Newton
Meters
Cone 9/16-18 120-150 160-200
Flanged 9/16-18 130-160 190-220
To Stow The Flat Or Spare
Turn the wheel so that the valve stem is down. Slide the
wheel retainer through the center of the wheel and
position it properly across the wheel opening.
For convenience in checking the spare tire inflation, stow
with the valve stem toward the rear of the vehicle.Attach the wheel wrench to the extension tube. Rotate the
winch mechanism until the wheel is drawn into place
against the underside of the vehicle. Continue to rotate
until you feel the winch mechanism slip or click 3 or 4
times. It cannot be overtightened. Push against the tire
several times to be sure it is firmly in place.
HOISTING
A conventional floor jack may be used at the jacking
locations, refer to the graphics that show jacking loca-
tions. However, a floor jack or frame hoist must never be
used on any other parts or the underbody.
CAUTION!
Never use a floor jack directly under the differential
housing of a loaded truck or damage to your vehicle
may result.
398 WHAT TO DO IN EMERGENCIES

Rear Axle And 4x4 Front Driving Axle Fluid Level
For Model 9.25 Front Axles and 10.5”/11.5” Rear Axles
refer to Fluids, Lubricants and Genuine Parts for the
correct lubricant type. For normal service, periodic fluid
level checks are not required. When the vehicle is ser-
viced for other reasons, the exterior surfaces of the axle
assembly should be inspected.
When checking the fluid level, the vehicle should be in a
level position. The fluid level should be 1/4” ± 1/4” (6.4
mm ± 6.4 mm) below the fill hole on the 9.25” Front Axle.
The fluid level should be 3/4” ± 1/4” (19 mm ± 6.4 mm)
below the fill hole on all 10.5” and 1/4” ± 1/4” (6.4 mm
± 6.4 mm) on 11.5” Rear Axles.
Drain And Refill
Vehicles operated in normal service do not have regularly
scheduled oil changes. If fluid has become contaminatedwith water or subjected to severe service, follow the
recommended change intervals in Maintenance Schedule
“B” in Section 8 of this manual.
Lubricant Selection
Refer to Fluids, Lubricants and Genuine Parts for the
correct lubricant type.
NOTE:The presence of water in the gear lubricant will
result in corrosion and possible failure of differential
components. Operation of the vehicle in water, as may be
encountered in some off-highway types of service, will
require draining and refilling the axle to avoid damage.
Limited-Slip Differentialsin vehicles equipped with
10.5”/11.5” AxlesDO NOT REQUIREany limited slip
oil additive (friction modifiers).
454 MAINTAINING YOUR VEHICLE

Drain, Flush, and Refill.................. 446
Inspection........................... 448
Points to Remember.................... 449
Pressure Cap......................... 447
Radiator Cap......................... 447
Selection of Coolant (Antifreeze).........446,488
Temperature Gauge..................... 200
Cruise Control (Speed Control).............. 139
CupHolder ............................ 172
Customer Assistance..................... 524
Customer Programmable Features............ 153
Data Recorder, Event...................... 58
Daytime Running Lights................... 131
Dealer Service.......................... 411
Defroster, Rear Window................. 88,181
Defroster, Windshield................ 77,258,261
Delay (Intermittent) Wipers................. 135
Diesel Exhaust Brake..................... 290Diesel Fuel............................ 348
Diesel Fuel Requirements.................. 348
Differential, Limited-Slip.................. 317
Dipsticks .............................. 414
Power Steering........................ 439
Disc Brakes............................ 451
Disposal.............................. 421
Engine Oil........................... 421
Used Coolant (Antifreeze)................ 448
Door Locks............................. 25
Door Locks, Automatic.................... 153
Door Opener, Garage..................... 160
Draining Fuel/Water Separator Filter.......427,430
DriveBelts ............................ 422
Dual Rear Wheels.....................347,396
DVD Player (Video Entertainment System)...... 249
Electric Rear Window Defrost............. 88,181
Electrical Power Outlets................... 169
INDEX 537
10

Filters
Engine Oil.....................414,419,488
Flashers
Turn Signal.......................... 133
Flat Tire Stowage.....................388,398
Fluid, Brake........................... 491
Fluid Capacities......................... 487
Fluid Level Checks
Brake............................... 452
Manual Transmission................... 455
Power Steering........................ 439
Transfer Case......................... 455
Fluids, Lubricants and Genuine Parts.......... 488
Fog Lights.......................132,202,477
Fold Flat Load Floor..................... 183
Four Wheel Drive....................... 306
Four-Way Hazard Flasher.................. 386
Freeing A Stuck Vehicle................... 402
Front Axle (Differential)................441,454Fuel..............................348,352
Adding............................. 352
Diesel......................348,350,352,488
Gauge.............................. 206
Light ............................... 206
Requirements......................348,350
Specifications......................349,351
Tank Capacity........................ 487
Fuses................................ 468
Garage Door Opener (HomeLink) ........... 160
Gauges............................... 198
Coolant Temperature.................... 200
Fuel................................ 206
Oil Pressure.......................... 200
Speedometer......................... 199
Tachometer.......................... 199
Voltmeter.........................198,282
Gear Ranges......................291,297,304
INDEX 539
10

Fog ..........................132,202,477
Four-Wheel Drive Indicator............... 309
Hazard Warning Flasher................. 386
Headlights........................... 130
High Beam........................134,199
High Beam Indicator.................... 199
High Beam/Low Beam Select............. 134
Illuminated Entry....................... 19
Instrument Cluster..................... 198
Intensity Control....................... 129
Interior..........................129,142
Lights On Reminder.................... 132
Passing............................. 134
Reading............................. 150
Seat Belt Reminder..................... 199
Service...........................473,474
Side Marker.......................... 486
Transfer Case......................... 309
Transmission Warning................... 205Turn Signal..................133,199,474,478
Warning (Instrument Cluster Description)..... 198
Limited-Slip Differential................317,454
Loading Vehicle......................... 355
Tires ............................... 330
Locks................................. 25
Child Protection........................ 29
Door................................ 25
Keys................................ 12
Power Door........................... 26
Steering Wheel......................... 15
Lower Anchors and Tether for CHildren (LATCH) . 65
Lubrication, Body....................... 441
LugNuts ............................. 394
Lumbar Support........................ 118
Maintenance........................... 411
Maintenance Procedures................... 414
Maintenance Schedule..................494,511
542 INDEX

Sunroof............................. 166
Windows............................. 30
Power Steering Fluid..................... 491
Pregnant Women and Seat Belts.............. 45
Pretensioners
Seat Belts............................. 44
Programmable Electronic Features......153,162,165
Radial Ply Tires......................... 337
Radiator Cap (Coolant Pressure Cap).......... 447
Radio Broadcast Signals................... 207
Radio, Navigation....................... 245
Radio Operation...................209,217,231
Radio Remote Controls.................... 253
Radio, Satellite.......................245,249
Radio (Sound Systems)..............209,217,231
Rear Axle (Differential).................... 454
Rear Seat, Folding....................120,122
Rear Wheel Bearings..................... 458Rear Window Features.................... 181
Rear Window, Sliding................... 32,182
Reclining Front Seats..................... 116
Reclining Rear Seats...................... 120
Recorder, Event Data...................... 58
Recreational Towing...................... 377
Shifting into Transfer Case Neutral (N)....378,380
Shifting out of Transfer Case Neutral (N) . . . 379,382
Refrigerant............................ 439
Reminder, Seat Belt....................... 44
Remote Keyless Entry (RKE)................. 20
Remote Sound System (Radio) Controls........ 253
Replacement Tires....................... 341
Reporting Safety Defects................... 527
Resetting Oil Change Indicator...........153,156
Resetting Perform Service Indicator........... 513
Restraint, Head......................... 117
Restraints, Child....................... 60,68
Rotation, Tires.......................... 345
INDEX 545
10