tire type Ram 4500 Chassis Cab 2018 Owner's Guide

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

Fluid Type......................... .389, 437
Shifting .............................. .248
Special Additives ........................ .390
Axle Fluid ........................ .392, 393, 437
Axle Lubrication ....................... .392, 393
Back-Up ................................ .286
Back-Up Camera .......................... .286
Battery .............................. .152, 365
Charging System Light ....................152
Keyless Key Fob Replacement ................23
Belts, Seat ............................... .234
Body Builders Guide ..........................7
Body Mechanism Lubrication ..................379
B-Pillar Location .......................... .400
Brake Assist System ........................ .166
Brake Control System, Electronic ................165
Brake Fluid .......................... .388, 437
Brake System ......................... .388, 426
Fluid Check ........................... .388
Master Cylinder ........................ .388
Parking .............................. .245
Warning Light .......................... .150
Brake/Transmission Interlock ..................248
Bulb Replacement ......................... .325Bulbs, Light
.......................... .236, 325
Cab Top Clearance Lights .....................330
Camera ................................ .286
Camera, Rear ............................ .286
Capacities, Antifreeze (Engine Coolant) ...........434
Capacities, Fluid .......................... .434
Caps, Filler Oil (Engine) ........................ .364, 368
Power Steering ......................... .269
Radiator (Coolant Pressure) .................386
Carbon Monoxide Warning ................233, 433
Cargo Light ...............................
75
Car Washes .............................. .421
Cellular Phone ........................... .486
Center High Mounted Stop Light ...............328
Center Seat Storage Compartment ...............113
Changing A Flat Tire ....................... .339
Chart, Tire Sizing .......................... .396
Check Engine Light (Malfunction Indicator Light). . . .160
Checking Your Vehicle For Safety ...............233
Checks, Safety ............................ .233
Child Restraint ........................... .208
Child Restraints Booster Seats ........................... .212
12
INDEX 513