1998 DODGE RAM 1500 Workshop Manual

MPG steering wheel service reset lights open gas tank child restraint

Load previous 8 pages

Page 2481 of 2627

DODGE RAM 1500 1998 2.G Workshop Manual Fig. 120 LONG CROSSMEMBERS - LONG CARGO BOX ONLY
Fig. 121 INNER WHEELHOUSE PANEL - LONG CARGO BOX ONLY
23 - 186 BODY STRUCTUREDR
WELD LOCATIONS (Continued)

Page 2482 of 2627

DODGE RAM 1500 1998 2.G Workshop Manual Fig. 122 TAILGATE PILLAR OUTER PANEL - LONG CARGO BOX ONLY
Fig. 123 REAR SILL CROSS BOX - LONG CARGO BOX ONLY
DRBODY STRUCTURE 23 - 187
WELD LOCATIONS (Continued)

Page 2483 of 2627

DODGE RAM 1500 1998 2.G Workshop Manual Fig. 124 OUTER BOX SIDE PANEL - LONG CARGO BOX ONLY
Fig. 125 STAKE POCKET REINFORCEMENTS - LONG CARGO BOX ONLY
23 - 188 BODY STRUCTUREDR
WELD LOCATIONS (Continued)

Page 2484 of 2627

DODGE RAM 1500 1998 2.G Workshop Manual Fig. 126 TAILGATE PIVOT REINFORCEMENT - LONG CARGO BOX ONLY
Fig. 127 INNER WHEELHOUSE - LONG CARGO BOX ONLY
DRBODY STRUCTURE 23 - 189
WELD LOCATIONS (Continued)

Page 2485 of 2627

DODGE RAM 1500 1998 2.G Workshop Manual Fig. 128 009 OUTER TAILGATE PILLAR - LONG CARGO BOX ONLY
Fig. 129 INNER DOOR PANEL - QUAD CAB
23 - 190 BODY STRUCTUREDR
WELD LOCATIONS (Continued)

Page 2486 of 2627

DODGE RAM 1500 1998 2.G Workshop Manual Fig. 130 INNER DOOR PANEL - STANDARD CAB
Fig. 131 INNER DOOR PANEL - QUAD CAB
DRBODY STRUCTURE 23 - 191
WELD LOCATIONS (Continued)

Page 2487 of 2627

Page 2488 of 2627

DODGE RAM 1500 1998 2.G Workshop Manual HEATING & AIR CONDITIONING
TABLE OF CONTENTS
page page
HEATING & AIR CONDITIONING
DESCRIPTION
DESCRIPTION - ENGINE COOLING
SYSTEM REQUIREMENTS...............1
DESCRIPTION - HEATER AND AIR
CONDITIONER.

HEATING & AIR CONDITIONING
TABLE OF CONTENTS
page page
HEATING & AIR CONDITIONING
DESCRIPTION
DESCRIPTION - ENGINE COOLING
SYSTEM REQUIREMENTS...............1
DESCRIPTION - HEATER AND AIR
CONDITIONER........................1
OPERATION - HEATER AND AIR
CONDITIONER........................1
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - A/C
PERFORMANCE.......................3DIAGNOSIS AND TESTING - HEATER
PERFORMANCE TEST..................6
SPECIFICATIONS - A/C SYSTEM............7
CONTROLS.............................9
DISTRIBUTION..........................26
PLUMBING.............................41
HEATING & AIR
CONDITIONING
DESCRIPTION
DESCRIPTION - ENGINE COOLING SYSTEM
REQUIREMENTS
To maintain the performance level of the heating,
ventilation and air conditioning (HVAC) system, the
engine cooling system must be properly maintained.
The use of a bug screen is not recommended. Any
obstructions in front of the radiator or A/C condenser
will reduce the performance of the A/C and engine
cooling systems.
The engine cooling system includes the radiator,
thermostat, radiator hoses and the engine coolant
pump. Refer to Cooling for more information before
opening or attempting any service to the engine cool-
ing system.
DESCRIPTION - HEATER AND AIR
CONDITIONER
A manually controlled single zone type heating-air
conditioning system or a manually controlled dual
zone type heating-air conditioning system is available
on this model.
All vehicles are equipped with a common heater,
ventilation and air conditioning (HVAC) housing (Fig.
1). The system combines air conditioning, heating,
and ventilating capabilities in a single unit housing
mounted within the passenger compartment under
the instrument panel. The HVAC housing includes:
²Blower motor
²Blower motor resistor block²Heater core
²Evaporator coil
²Blend door and actuator
²Defrost door and actuator
²Mode door and actuator
²Recirculation door and actuator
Based upon the system and mode selected, condi-
tioned air can exit the HVAC housing through one or
a combination of the three main housing outlets:
defrost, panel or floor. The defrost outlet is located on
the top of the housing, the panel outlet is located on
the face of the housing and the floor outlet is located
on the bottom of the housing. Once the conditioned
air exits the unit housing, it is further directed
through molded plastic ducts to the various outlets in
the vehicle interior. These outlets and their locations
are as follows:
²Defroster Outlet- A single large defroster out-
let is located in the center of the instrument panel
top cover, near the base of the windshield.
²Side Window Demister Outlets- There are
two side window demister outlets, one is located at
each outboard end of the instrument panel top cover,
near the belt line at the A-pillars.
²Panel Outlets- There are four panel outlets in
the instrument panel, one located near each outboard
end of the instrument panel facing the rear of the
vehicle and two located near the top of the instru-
ment panel center bezel.
²Front Floor Outlets- There are two front floor
outlets, one located above each side of the floor panel
center tunnel near the dash panel.
OPERATION - HEATER AND AIR CONDITIONER
The heating and air conditioning systems pulls
outside (ambient) air through the cowl opening at the
base of the windshield, then into the plenum cham-
DRHEATING & AIR CONDITIONING 24 - 1

Load next 8 pages

Page: < prev 1-10 ... 2449-2456 2457-2464 2465-2472 2473-2480 2481-2488 2489-2496 2497-2504 2505-2512 2513-2520 ... 2632 next >

roof jump start air suspension maintenance dashboard warning lights manual transmission