2018 Ram 4500 Chassis Cab torque

Hydraulic Brake Assist
The brake system power assist is provided by a hydro-
boost unit which shares fluid with the power steering
system. You may experience some clicking or hissing
noises from the hydro-boost system during hard braking
conditions.
NOTE:Under cold temperatures, pedal effort will be
higher than normal until the power steering fluid reaches
operating temperature.
WHEEL AND TIRE TORQUE SPECIFICATIONS
Proper lug nut/bolt torque is very important to ensure that
the wheel is properly mounted to the vehicle. Any time a
wheel has been removed and reinstalled on the vehicle, the
lug nuts/bolts should be torqued using a properly cali-
brated torque wrench using a high quality six sided (hex)
deep wall socket.
Torque Specifications
Lug Nut/
Bolt Torque Lug Nut/
Bolt Type **Lug Nut/
Bolt Size Lug Nut/
Bolt Socket Size
120-150 Ft- Lbs (160-
200 N·m) Cone M14 x 1.50 22 mm
130-160 Ft- Lbs (190-
220 N·m) Flanged
**Use only your authorized dealer recommended lug nuts/
bolts and clean or remove any dirt or oil before tightening.
Inspect the wheel mounting surface prior to mounting the
tire and remove any corrosion or loose particles.
9
TECHNICAL SPECIFICATIONS 427

NOTE:Dual wheels are flat mounted, center piloted. The
lug nuts are a two-piece assembly. When the tires are being
rotated or replaced, clean these lug nuts and add two drops
of oil at the interface between the hex and the washer.
Ensure that the socket is fully engaged on the lug nut/bolt
(do not insert it half way).
Do not oil wheel studs. For chrome wheels, do not substi-
tute with chrome plated wheel nuts. Retighten the wheel nuts in the same sequence to the
torques listed in the table. Go through the sequence a
second time to verify that specific torque has been
achieved. Retighten to specifications after 25 miles (40 km)
and check the lug nut/bolt torque to be sure that all the lug
nuts/bolts are properly seated against the wheel.
Oil Interface Location
Wheel Mounting Surface
428 TECHNICAL SPECIFICATIONS

It is recommended that wheel stud nuts be kept torqued to
specifications at all times. Torque wheel stud nuts to
specifications at each lubrication interval.
All wheel nuts should be tightened occasionally to elimi-
nate the possibility of wheel studs being sheared or the bolt
holes in the wheels becoming elongated. This is especially
important during the first few hundred miles/kilometers
of operation to allow the wheel nuts to become properly
set. All wheel nuts should first be firmly seated against thewheel. The wheel nuts should then be tightened to recom-
mended torque. Tighten the wheel nuts to final torque in
increments. Progress around the bolt circle, tightening the
wheel nut opposite to the wheel nut just previously
tightened until final torque is achieved.
WARNING!
To avoid the risk of forcing the vehicle off the jack, do
not tighten the lug nuts fully until the vehicle has been
lowered. Failure to follow this warning may result in
personal injury.
FUEL REQUIREMENTS
6.4L Engine
Do not use E-85 flex fuel or ethanol blends greater than
15% in this engine.
This engines is designed to meet all emis-
sions regulations and provide satisfactory
fuel economy and performance when us-
ing high quality unleaded gasoline hav-
ing a posted octane number range of 87 to
89 as specified by the (R+M)/2 method.
The use of 89 octane “Plus” gasoline is
recommended for optimum performance and fuel economy.
8/10 Lug Nuts/Bolts Torque Patterns
1 — 10 Bolt Pattern
2 — 8 Bolt Pattern9
TECHNICAL SPECIFICATIONS 429

Load Capacity...................... .400, 401
Pressure Monitor System (TPMS) .............176
Pressure Warning Light ....................155
Quality Grading ........................ .418
Radial ............................... .406
Replacement ........................... .409
Rotation .............................. .416
Safety ............................ .394, 404
Sizes ................................ .396
Snow Tires .............................411
Spare Tire ...........................411,413
Spinning .............................. .407
Trailer Towing .......................... .301
Tread Wear Indicators .....................408
Wheel Nut Torque ....................343, 427
Tire Safety Information ...................... .394
Tongue Weight/Trailer Weight .................299
To Open Hood ........................... .101
Torque Converter Clutch .....................256
Towing ............................. .292, 352
Disabled Vehicle ........................ .352
Guide ................................ .299
Recreational ............................311
Weight ............................... .299
Towing Vehicle Behind A Motorhome ............311Traction
................................ .316
Traction Control .......................... .168
Trailer Sway Control (TSC) ....................173
Trailer Towing ............................ .292
Cooling System Tips ..................... .308
Hitches ............................... .298
Minimum Requirements ....................300
Mirrors ................................67
Tips ................................. .307
Trailer And Tongue Weight ..................299
Wiring ............................... .306
T

railer Towing Guide ....................... .299
Trailer Weight ............................ .299
Transfer Case ............................ .393
Electronically Shifted ..................... .260
Fluid ................................ .437
Transmission Automatic ......................... .248, 389
Fluid ................................ .437
Maintenance ........................... .389
Shifting .............................. .246
Transporting Pets ......................... .233
Tread Wear Indicators ...................... .408
Turn Signals ....................... .75, 158, 326
524 INDEX

UconnectCustomer Programmable Features .........454, 474
Uconnect Settings ....................... .443
Uconnect Settings .....................454, 474
Uconnect Settings Customer Programmable Features .......37, 451, 472
Passive Entry Programming ...........37, 451, 472
Uconnect Settings .....................451, 472
Uconnect Voice Command ....................487
Uniform Tire Quality Grades ..................418
Universal Garage Door Opener (HomeLink) Programming HomeLink .........103, 104, 106, 107
Unleaded Gasoline ........................ .429
Untwisting Procedure, Seat Belt ................189
Vehicle Identification Number (VIN) .............426
Vehicle Loading ....................... .290, 401
Vehicle Modifications/Alterations .................7
Vehicle Storage ......................... .97, 419
Viscosity, Engine Oil ....................... .368
Voice Recognition System (VR) .................487
Warning Lights (Instrument Cluster Description) . . . .154
Warnings And Cautions .......................7
Warranty Information ...................... .509Washers, Windshield
..................... .80, 365
Washing Vehicle .......................... .421
Water Driving Through ........................ .317
Wheel And Wheel Trim ..................... .413
Wheel And Wheel Trim Care ..................413
Wheel Cover ............................. .344
Wheel Nut Torque ..................... .343, 344
Wind Buffeting ........................... .101
Window Fogging ...........................97
Windows .................................99
Power .................................99
Reset Auto-Up ......................... .100
Windshield Defroster ....................... .234
Windshield Washers ...................79, 80, 365
Fluid .............................. .79,
365
Windshield Wiper Blades .....................379
Windshield Wipers ..........................79
Wiper Blade Replacement .....................379
Wipers, Intermittent .........................79
Wipers, Rain Sensitive ........................80
12
INDEX 525