fold seats DODGE RAM 1500 1998 2.G User Guide
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Page 2536 of 2627

when a minimum discharge pressure of 2756 kPa
(400 psi) is reached.
The high pressure relief valve vents only enough
refrigerant to reduce the system pressure, and then
re-seats itself. The majority of the refrigerant is con-
served in the system. If the valve vents refrigerant, it
does not mean that the valve is faulty.
The high pressure relief valve is a factory-cali-
brated unit. The valve cannot be adjusted or
repaired, and must not be removed or otherwise dis-
turbed. The valve is only serviced as a part of the
compressor assembly.
DIAGNOSIS AND TESTING - A/C COMPRESSOR
When investigating an air conditioning related
noise, you must first know the conditions under
which the noise occurs. These conditions include:
weather, vehicle speed, transmission in gear or neu-
tral, engine speed, engine temperature, and any
other special conditions. Noises that develop during
air conditioning operation can often be misleading.
For example: What sounds like a failed front bearing
or connecting rod, may be caused by loose bolts, nuts,
mounting brackets, or a loose compressor clutch
assembly.
Drive belts are speed sensitive. At different engine
speeds and depending upon belt tension, belts can
develop noises that are mistaken for a compressor
noise. Improper belt tension can cause a misleading
noise when the compressor clutch is engaged, which
may not occur when the compressor clutch is disen-
gaged. Check the serpentine drive belt condition and
tension as described in Cooling before beginning this
procedure.
(1) Select a quiet area for testing. Duplicate the
complaint conditions as much as possible. Switch the
compressor on and off several times to clearly iden-
tify the compressor noise. Listen to the compressor
while the clutch is engaged and disengaged. Probe
the compressor with an engine stethoscope or a long
screwdriver with the handle held to your ear to bet-
ter localize the source of the noise.
(2) Loosen all of the compressor mounting hard-
ware and retighten. Tighten the compressor clutch
mounting nut. Be certain that the clutch coil is
mounted securely to the compressor, and that the
clutch plate and rotor are properly aligned and have
the correct air gap (Refer to 24 - HEATING & AIR
CONDITIONING/CONTROLS/A/C COMPRESSOR
CLUTCH - INSTALLATION).
(3) To duplicate a high-ambient temperature condi-
tion (high head pressure), restrict the air flow
through the condenser. Install a manifold gauge set
or a DRBIIItscan tool to be certain that the dis-
charge pressure does not exceed 2760 kPa (400 psi).(4) Check the refrigerant system plumbing for
incorrect routing, rubbing or interference, which can
cause unusual noises. Also check the refrigerant lines
for kinks or sharp bends that will restrict refrigerant
flow, which can cause noises (Refer to 24 - HEATING
& AIR CONDITIONING/PLUMBING - STANDARD
PROCEDURE).
(5) If the noise is from opening and closing of the
high pressure relief valve, recover, evacuate and
recharge the refrigerant system (Refer to 24 - HEAT-
ING & AIR CONDITIONING/PLUMBING - STAN-
DARD PROCEDURE), (Refer to 24 - HEATING &
AIR CONDITIONING/PLUMBING - STANDARD
PROCEDURE - REFRIGERANT SYSTEM EVACU-
ATE) and (Refer to 24 - HEATING & AIR CONDI-
TIONING/PLUMBING - STANDARD PROCEDURE -
REFRIGERANT SYSTEM CHARGE). If the high
pressure relief valve still does not seat properly,
replace the compressor (Refer to 24 - HEATING &
AIR CONDITIONING/PLUMBING/A/C COMPRES-
SOR - REMOVAL).
(6) If the noise is from liquid slugging on the suc-
tion line, replace the accumulator (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING/AC-
CUMULATOR - REMOVAL) and check the refriger-
ant oil level and the refrigerant system charge (Refer
to 24 - HEATING & AIR CONDITIONING/PLUMB-
ING/REFRIGERANT OIL - STANDARD PROCE-
DURE) (Refer to 24 - HEATING & AIR
CONDITIONING/PLUMBING/ACCUMULATOR -
REMOVAL). If after replacing the accumulator the
slugging condition still exists then replace the com-
pressor.(Refer to 24 - HEATING & AIR CONDITION-
ING/PLUMBING/A/C COMPRESSOR - REMOVAL).
(7) If the liquid slugging condition continues fol-
lowing accumulator replacement, replace the com-
pressor and repeat Step 1.
REMOVAL
WARNING: REVIEW THE WARNINGS AND CAU-
TIONS IN THE FRONT OF THIS SECTION BEFORE
PERFORMING THE FOLLOWING OPERATION (Refer
to 24 - HEATING & AIR CONDITIONING/PLUMBING -
WARNING) and (Refer to 24 - HEATING & AIR CON-
DITIONING/PLUMBING - CAUTION).
NOTE: The A/C compressor may be removed and
repositioned without disconnecting the refrigerant
lines or discharging the refrigerant system. Dis-
charging is not necessary if servicing the compres-
sor clutch, clutch coil, engine, engine cylinder head
or the generator.
(1) Recover the refrigerant from the refrigerant
system (Refer to 24 - HEATING & AIR CONDITION-
DRPLUMBING 24 - 49
A/C COMPRESSOR (Continued)
Page 2605 of 2627

INTAKE AIR HEATER - OPERATION.......14-80
INTAKE AIR HEATER - REMOVAL........14-80
INTAKE AIR HEATER RELAY -
DESCRIPTION.......................14-82
INTAKE AIR HEATER RELAY -
INSTALLATION.......................14-82
INTAKE AIR HEATER RELAY -
OPERATION.........................14-82
INTAKE AIR HEATER RELAY - REMOVAL . . 14-82
INTAKE AIR TEMPERATURE SENSOR -
DESCRIPTION.......................14-30
INTAKE AIR TEMPERATURE SENSOR -
INSTALLATION.......................14-31
INTAKE AIR TEMPERATURE SENSOR -
OPERATION.........................14-30
INTAKE AIR TEMPERATURE SENSOR -
REMOVAL..........................14-30
INTAKE AIR TEMPERATURE SENSOR/
MAP SENSOR - DESCRIPTION..........14-82
INTAKE AIR TEMPERATURE SENSOR/
MAP SENSOR - INSTALLATION..........14-82
INTAKE AIR TEMPERATURE SENSOR/
MAP SENSOR - OPERATION............14-82
INTAKE AIR TEMPERATURE SENSOR/
MAP SENSOR - REMOVAL.............14-82
INTAKE MANIFOLD - CLEANING....9-160,9-226,
9-297
INTAKE MANIFOLD - DESCRIPTION . 9-159,9-225,
9-72
INTAKE MANIFOLD - INSPECTION . . 9-160,9-226,
9-297
INTAKE MANIFOLD - INSTALLATION.....9-160,
9-226,9-298,9-73
INTAKE MANIFOLD - REMOVAL....9-159,9-226,
9-297,9-73
INTAKE MANIFOLD LEAKAGE -
DIAGNOSIS AND TESTING........9-159,9-225
INTAKE MANIFOLD LEAKS - DIAGNOSIS
AND TESTING........................9-72
INTAKE SYSTEM - INSTALLATION, AIR....9-199
INTAKE SYSTEM - REMOVAL, AIR.......9-199
INTAKE/EXHAUST VALVES & SEATS -
DESCRIPTION..............9-123,9-256,9-28
INTAKE/EXHAUST VALVES & SEATS -
INSTALLATION...................9-124,9-30
INTAKE/EXHAUST VALVES & SEATS -
REMOVAL......................9-124,9-29
INTEGRATED POWER MODULE -
DESCRIPTION.....................8W-97-3
INTEGRATED POWER MODULE -
INSTALLATION....................8W-97-4
INTEGRATED POWER MODULE -
OPERATION.......................8W-97-3
INTEGRATED POWER MODULE -
REMOVAL........................8W-97-3
INTERIOR - CAUTION.................23-62
INTERLOCK - ADJUSTMENTS, BRAKE
TRANSMISSION SHIFT.........21-196,21-365
INTERLOCK - DIAGNOSIS AND TESTING,
BRAKE TRANSMISSION SHIFT . . . 21-196,21-364
INTERLOCK SYSTEM - DESCRIPTION,
BRAKE TRANSMISSION SHIFT . . . 21-196,21-364
INTERLOCK SYSTEM - OPERATION,
BRAKE TRANSMISSION SHIFT . . . 21-196,21-364
INTERNATIONAL SYMBOLS -
DESCRIPTION......................Intro.-5
INVERTED FLARING - STANDARD
PROCEDURE, DOUBLE.................5-10
IOD FUSE - DESCRIPTION...........8W-97-6
IOD FUSE - INSTALLATION...........8W-97-7
IOD FUSE - OPERATION.............8W-97-6
IOD FUSE - REMOVAL..............8W-97-7
ISO FLARING - STANDARD PROCEDURE
. . . 5-11
ISOLATORS - INSTALLATION, BODY
......23-37
ISOLATORS - REMOVAL, BODY
.........23-36
JOINT - DIAGNOSIS AND TESTING,
LOWER BALL
....................2-19,2-34
JOINT - DIAGNOSIS AND TESTING,
UPPER BALL
.....................2-27,2-36
JOINT - INSTALLATION, LOWER BALL
. 2-20,2-35
JOINT - INSTALLATION, UPPER BALL
.....2-36
JOINT - REMOVAL, LOWER BALL
.....2-19,2-35
JOINT - REMOVAL, UPPER BALL
.........2-36
JOINT-INNER - INSTALLATION, CV
........3-25
JOINT-INNER - REMOVAL, CV
............3-25
JOINT-OUTER - INSTALLATION, CV
........3-23
JOINT-OUTER - REMOVAL, CV
...........3-22JOINTS - ASSEMBLY, DOUBLE CARDAN
UNIVERSAL..........................3-17
JOINTS - DISASSEMBLY, DOUBLE
CARDAN UNIVERSAL..................3-16
JOUNCE BUMPER - INSTALLATION.......2-43
JOUNCE BUMPER - REMOVAL...........2-43
JOURNAL CLEARANCE - STANDARD
PROCEDURE, CONNECTING ROD
BEARING AND CRANKSHAFT...........9-272
JUMP STARTING - STANDARD
PROCEDURE.........................0-19
JUNCTION BLOCK - INSTALLATION,
BRAKE..............................5-24
JUNCTION BLOCK - REMOVAL, BRAKE....5-24
KEY CYLINDER - INSTALLATION.........19-12
KEY CYLINDER - REMOVAL............19-12
KEY IMMOBILIZER MODULE -
DESCRIPTION, SENTRY................8E-13
KEY IMMOBILIZER MODULE -
INSTALLATION, SENTRY...............8E-15
KEY IMMOBILIZER MODULE -
OPERATION, SENTRY.................8E-13
KEY IMMOBILIZER MODULE - REMOVAL,
SENTRY............................8E-15
KEY IMMOBILIZER MODULE (SKIM) -
DESCRIPTION, SENTRY................8Q-1
KEY IMMOBILIZER MODULE (SKIM) -
OPERATION, SENTRY..................8Q-2
KEY IMMOBILIZER SYSTEM INDICATOR
LAMP - DESCRIPTION, SENTRY..........8Q-5
KEY IMMOBILIZER SYSTEM INDICATOR
LAMP - OPERATION, SENTRY...........8Q-5
KEY IMMOBILIZER SYSTEM
INITIALIZATION, STANDARD
PROCEDURE - SENTRY................8Q-3
KEY IMMOBILIZER SYSTEM (SKIS) -
DESCRIPTION, SENTRY................8Q-1
KEY IMMOBILIZER SYSTEM (SKIS) -
OPERATION, SENTRY..................8Q-2
KEY IMMOBILIZER SYSTEM
TRANSPONDER PROGRAMMING,
STANDARD PROCEDURE - SENTRY.......8Q-4
KEY LOCK CYLINDER - DIAGNOSIS AND
TESTING, IGNITION SWITCH............19-11
KEY-IN IGNITION SWITCH -
DESCRIPTION.......................19-11
KEYLESS ENTRY MODULE -
DESCRIPTION, REMOTE................8N-7
KEYLESS ENTRY MODULE - DIAGNOSIS
AND TESTING, REMOTE................8N-7
KEYLESS ENTRY MODULE -
INSTALLATION, REMOTE...............8N-8
KEYLESS ENTRY MODULE - OPERATION,
REMOTE............................8N-7
KEYLESS ENTRY MODULE - REMOVAL,
REMOTE............................8N-7
KEYLESS ENTRY TRANSMITTER -
DIAGNOSIS AND TESTING, REMOTE......8N-8
KEYLESS ENTRY TRANSMITTER -
SPECIFICATIONS, REMOTE..............8N-9
KNOB RELEASE - INSTALLATION, TILT
LEVER.............................19-16
KNOB RELEASE - REMOVAL, TILT LEVER . . 19-16
KNOCK SENSOR - DESCRIPTION.........8I-14
KNOCK SENSOR - INSTALLATION........8I-15
KNOCK SENSOR - OPERATION..........8I-14
KNOCK SENSOR - REMOVAL............8I-15
KNUCKLE - DESCRIPTION...............2-18
KNUCKLE - INSTALLATION..........2-19,2-37
KNUCKLE - OPERATION................2-18
KNUCKLE - REMOVAL..............2-18,2-37
LABEL - DESCRIPTION, VEHICLE
CERTIFICATION....................Intro.-11
LAMP - DESCRIPTION, DOME...........8L-26
LAMP - DESCRIPTION, READING........8L-28
LAMP - DESCRIPTION, SENTRY KEY
IMMOBILIZER SYSTEM INDICATOR.......8Q-5
LAMP - INSTALLATION, CAB CLEARANCE . 8L-12
LAMP - INSTALLATION, CENTER HIGH
MOUNTED STOP.....................8L-11
LAMP - INSTALLATION, DOME..........8L-26
LAMP - INSTALLATION, FENDER
MARKER
...........................8L-18
LAMP - INSTALLATION, FOG
............8L-12
LAMP - INSTALLATION, LICENSE PLATE
. . 8L-17
LAMP - INSTALLATION, PARK/TURN
SIGNAL
............................8L-21
LAMP - INSTALLATION, READING
........8L-29LAMP - INSTALLATION, TAILGATE
MARKER...........................8L-18
LAMP - INSTALLATION, UNDERHOOD....8L-25
LAMP - OPERATION, DOME............8L-26
LAMP - OPERATION, READING..........8L-28
LAMP - OPERATION, SENTRY KEY
IMMOBILIZER SYSTEM INDICATOR.......8Q-5
LAMP - REMOVAL, CAB CLEARANCE.....8L-11
LAMP - REMOVAL, CENTER HIGH
MOUNTED STOP.....................8L-11
LAMP - REMOVAL, DOME..............8L-26
LAMP - REMOVAL, FENDER MARKER....8L-17
LAMP - REMOVAL, FOG...............8L-12
LAMP - REMOVAL, LICENSE PLATE......8L-17
LAMP - REMOVAL, PARK/TURN SIGNAL . . 8L-21
LAMP - REMOVAL, READING...........8L-28
LAMP - REMOVAL, TAILGATE MARKER . . . 8L-18
LAMP - REMOVAL, UNDERHOOD........8L-25
LAMP INDICATOR - DESCRIPTION,
CARGO.............................8J-20
LAMP INDICATOR - OPERATION, CARGO . . 8J-20
LAMP (MIL) - DESCRIPTION,
MALFUNCTION INDICATOR.............8J-31
LAMP (MIL) - OPERATION,
MALFUNCTION INDICATOR.............8J-31
LAMP OUT INDICATOR - DESCRIPTION . . . 8J-29
LAMP OUT INDICATOR - OPERATION.....8J-29
LAMP RELAY - DESCRIPTION, FOG......8L-12
LAMP RELAY - DESCRIPTION, PARK.....8L-20
LAMP RELAY - DIAGNOSIS AND
TESTING, PARK......................8L-20
LAMP RELAY - INSTALLATION, FOG......8L-13
LAMP RELAY - INSTALLATION, PARK.....8L-21
LAMP RELAY - OPERATION, FOG........8L-13
LAMP RELAY - OPERATION, PARK.......8L-20
LAMP RELAY - REMOVAL, FOG.........8L-13
LAMP RELAY - REMOVAL, PARK........8L-21
LAMP REPLACEMENT - STANDARD
PROCEDURE, MODULE................8M-3
LAMP REPLACEMENT - STANDARD
PROCEDURE, READING/COURTESY.......8M-3
LAMP SWITCH - DESCRIPTION, BACKUP . . . 8L-8
LAMP SWITCH - DESCRIPTION, BRAKE....8L-9
LAMP SWITCH - DIAGNOSIS AND
TESTING, BACKUP.....................8L-8
LAMP SWITCH - DIAGNOSIS AND
TESTING, BRAKE.....................8L-10
LAMP SWITCH - INSTALLATION, BRAKE . . 8L-11
LAMP SWITCH - OPERATION, BACKUP....8L-8
LAMP SWITCH - OPERATION, BRAKE......8L-9
LAMP SWITCH - REMOVAL, BRAKE......8L-10
LAMP UNIT - INSTALLATION, CENTER
HIGH MOUNTED STOP................8L-11
LAMP UNIT - INSTALLATION, LICENSE
PLATE .............................8L-17
LAMP UNIT - INSTALLATION,
UNDERHOOD........................8L-25
LAMP UNIT - REMOVAL, CENTER HIGH
MOUNTED STOP.....................8L-11
LAMP UNIT - REMOVAL, LICENSE PLATE . . 8L-17
LAMP UNIT - REMOVAL, UNDERHOOD . . . 8L-25
LAMPS, SPECIFICATIONS - EXTERIOR.....8L-7
LAMPS/LIGHTING - EXTERIOR -
DESCRIPTION........................8L-2
LAMPS/LIGHTING - EXTERIOR -
DIAGNOSIS AND TESTING..............8L-3
LAMPS/LIGHTING - EXTERIOR -
OPERATION..........................8L-2
LAMP/SWITCH - INSTALLATION, GLOVE
BOX ...............................8L-28
LAMP/SWITCH - REMOVAL, GLOVE BOX . . 8L-27
LASH ADJUSTER - DIAGNOSIS AND
TESTING, HYDRAULIC.............9-125,9-32
LASH ADJUSTMENT AND VERIFICATION
- STANDARD PROCEDURE, VALVE.......9-259
LATCH - INSTALLATION.....23-16,23-23,23-32,
23-47
LATCH - INSTALLATION, GLOVE BOX.....23-52
LATCH - INSTALLATION, UNDER SEAT
STORAGE BIN.......................23-80
LATCH - REMOVAL
....23-16,23-23,23-32,23-47
LATCH - REMOVAL, GLOVE BOX
.........23-52
LATCH - REMOVAL, UNDER SEAT
STORAGE BIN
.......................23-80
LATCH RELEASE CABLE/HANDLE
ASSEMBLY - INSTALLATION
............23-47
LATCH RELEASE CABLE/HANDLE
ASSEMBLY - REMOVAL
................23-47
18 INDEXDR
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