DODGE RAM 1999 Service User Guide
Page 11 of 1691
"W" ABBREVIATION TABLE
"W" ABBREVIATION TABLE
ABBREVIATION DEFINITION W/
With _ W/O
Without _ WAC WOT
WOT A/C Cut-off switch WAC
Wide Open Throttle A/C WHT
White _ WOT
Wide Open Throttle _ YEL
Yellow _
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A/C C O M PR ESSO R R EFR IG ER AN T O IL C HEC KIN G
1999 D odge P ic ku p R 1500
1999 GENERAL SERVICING
A/C Compressor Refrigerant Oil Checking
All Models
* PLEASE READ THIS FIRST *
NOTE: For compressor applications, see COMPRESSOR APPLICATIONS &
BODY DESIGNATIONS. DO NOT exceed A/C system refrigerant oil
capacity when servicing system. See CAPACITIES.
BODY DESIGNATIONS
BODY DESIGNATIONS (CHRYSLER CORP. CARS) \
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Model ( 1) Body Designation
Avenger & Sebring Coupe ................................ "FJ22" Body
Breeze, Cirrus & Stratus ................................. "JA" Body
Concorde, Intrepid, LHS & 300M ........................... "LH" Body
Neon ..................................................... "PL" Body
Sebring Convertible ...................................... "JX" Body
( 1) - Body codes are determined by fifth character of VIN code.
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BODY DESIGNATIONS (CHRYSLER CORP. LIGHT TRUCKS & VANS) \
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Model Body Designation
Caravan, Town & Country, & Voyager ..................... "NS" Series
Dakota ................................................. "AN" Series
Durango ................................................ "DN" Series
Ram Pickup .......................................... "BR/BE" Series
Ram Van/Wagon .......................................... "AB" Series
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BODY DESIGNATIONS (FORD MOTOR CO. LIGHT TRUCKS & VANS) \
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Model Body Designation
Explorer & Mountaineer .................................. "U" Series
Pickup .................................................. "F" Series
Ranger .................................................. "R" Series
Van ..................................................... "E" Series
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BODY DESIGNATIONS (GENERAL MOTORS CARS) \
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Model ( 1) Body Designation
Alero, Cutlass, Grand Am & Malibu ......................... "N" Body
Aurora & Riviera .......................................... "G" Body
Bonneville, Eighty Eight, LeSabre & LSS ................... "H" Body
Camaro & Firebird ......................................... "F" Body
Catera .................................................... "V" Body
Cavalier & Sunfire ........................................ "J" Body
Century, Grand Prix, Intrigue, Lumina, Monte Carlo &
Regal .................................................... "W" Body
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DeVille & Seville ......................................... "K" Body
Corvette .................................................. "Y" Body
Eldorado .................................................. "E" Body
Metro ..................................................... "M" Body
Park Avenue ............................................... "C" Body
Prizm ..................................................... "S" Body
Saturn .................................................... "Z" Body
(1) - Body codes are determined by fourth character of VIN code.
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BODY DESIGNATIONS (GENERAL MOTORS LIGHT TRUCKS & VANS) \
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Model ( 1) Body Designation
Astro & Safari
2WD ................................................... "M" Series
4WD ................................................... "L" Series
Blazer, Bravada, Envoy, Jimmy, Pickup & Sonoma
2WD ................................................... "S" Series
4WD ................................................... "T" Series
Commercial Chassis & Motorhome .......................... "P" Series
Escalade, Pickup, Sierra, Silverado, Suburban, Tahoe & Yukon
2WD ................................................... "C" Series
4WD ................................................... "K" Series
Express & Savana ........................................ "G" Series
Tracker ................................................. "J" Series
Montana, Silhouette & Venture ........................... "U" Series
( 1) - Series codes are determined by fifth character of VIN code.
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BODY DESIGNATIONS (JEEP LIGHT TRUCKS) \
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Model ( 1) Body Designation
Cherokee ............................................... "XJ" Series
Grand Cherokee ......................................... "WJ" Series
Wrangler ............................................... "TJ" Series
( 1) - Series codes are determined by fifth character of VIN code.
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COMPRESSOR APPLICATIONS
COMPRESSOR APPLICATIONS (CARS) \
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Application Compressor
Chrysler Corp.
Avenger & Sebring Coupe
2.0L (DOHC) ........................ Nippondenso 10PA17C 10-Cyl.\
2.5L (SOHC) .............................. Sanden MSC90-C Scroll\
Breeze, Cirrus & Stratus .................... Sanden TRS-90 Scroll
Concorde, Intrepid, LHS & 300M ........ Nippondenso 10PA17 10-Cyl.
Neon .................................. Nippondenso 10PA17 10-Cyl.
Sebring Convertible ......................... Sanden TRS-90 Scroll
Ford Motor Co.
Except Taurus 3.4L SHO ........................ Ford FS-10 10-Cyl.
Taurus 3.4L SHO .................................... Sanden Scroll
General Motors ( 1)
"C" Body ...................................... Harrison V5 5-Cyl.
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"E" Body ................................. Harrison HD6/HT6 6-Cyl.
"F" Body
3.8L Engine ................................. Harrison V5 5-Cyl.
5.7L Engine ................................. Harrison V7 7-Cyl.
"G" Body
Aurora ................................. Harrison HD6/HT6 6-Cyl.
Riviera ..................................... Harrison V5 5-Cyl.
"H" Body ...................................... Harrison V5 5-Cyl.
"J" Body ...................................... Harrison V5 5-Cyl.
"K" Body ................................. Harrison HD6/HT6 6-Cyl.
"M" Body ..................................... Nippondenso 10-Cyl.
"N" Body ...................................... Harrison V5 5-Cyl.
"S" Body ...................................... Harrison V5 5-Cyl.
"V" Body ...................................... Harrison V5 5-Cyl.
"W" Body ...................................... Harrison V5 5-Cyl.
"Y" Body ...................................... Harrison V7 7-Cyl.
"Z" Body ....................................... Zexel Rotary Vane
(1) - Body codes are determined by fourth character of VIN code.
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COMPRESSOR APPLICATIONS (LIGHT TRUCKS & VANS) \
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Application Compressor
Chrysler Corp.
Dakota & Ram Pickup ........................ Sanden SD-7H15 7-Cyl.
Durango .................................... Sanden SD-7H15 7-Cyl.
Caravan, Town & Country, & Voyager .... Nippondenso 10PA17 10-Cyl.
Ram Van/Wagon ............................... Sanden TR-105 Scroll
Ford Motor Co.
"E" Series Van ................................ Ford FS-10 10-Cyl.
Expedition & Navigator ........................ Ford FS-10 10-Cyl.
Explorer & Mountaineer ........................ Ford FS-10 10-Cyl.
"F" Series Pickup
Except Super Duty ........................... Ford FS-10 10-Cyl.
Super Duty ............................... Sanden SD-7H15 7 Cyl.
Ranger ........................................ Ford FS-10 10-Cyl.
Villager ........................................... FS-10 10-Cyl.
Windstar ...................................... Ford FS-10 10-Cyl.
General Motors ( 1)
"C" & "K" Series ......................... Harrison HD6/HT6 6-Cyl.
"G" Series .................................... Harrison V5 5-Cyl.
"J" Series ................................... Nippondenso 10-Cyl.
"L" & "M" Series ......................... Harrison HD6/HT6 6-Cyl.
"P" Series ............................... Harrison HD6/HT6 6-Cyl.
"S" & "T" Series
2.2L ........................................ Harrison V7 7-Cyl.
4.3L ................................... Harrison HD6/HT6 6-Cyl.
"U" Series .................................... Harrison V5 5-Cyl.
Jeep
Cherokee ................................... Sanden SD-7H15 7-Cyl.
Grand Cherokee ........................ Nippondenso 10PA17 10-Cyl.
Wrangler ................................... Sanden SD-7H15 7-Cyl.
( 1) - Series codes are determined by fifth character of VIN code.
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CAPACITIES
NOTE: Always refer to underhood A/C specification label in engine
compartment or A/C compressor label while servicing A/C
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system. If A/C specification label and specifications in this
article differ, use underhood label specifications.
REFRIGERANT OIL & R-134a REFRIGERANT CAPACITY (CARS)
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Application ( 1) Oil Oz. Refrigerant Oz.
Chrysler Corp.
Avenger & Sebring Coupe
2.0L (DOHC) ...................... 2.7-4.1 ......... 24.7-26.1\
2.5L (SOHC) ...................... 5.7-6.4 ......... 24.7-26.1\
Breeze, Cirrus & Stratus ............. 5.0 ................ 20.0
Concorde, Intrepid, LHS & 300M ....... 5.0 ................ 28.0
Neon ................................. 6.8 ................ 28.0
Sebring Convertible .................. 5.0 ................ 20.0
Ford Motor Co.
Continental .......................... 7.0 ................ 34.0
Contour, Cougar & Mystique ........... ( 1) ................. ( 1)
Crown Victoria & Grand Marquis ....... 7.0 ................ 38.0
Escort, Coupe & Tracer ............... 7.0 ................ 28.0
Mustang .............................. 7.0 ................ 34.0
Sable & Taurus ....................... 7.0 ................ 34.0
Town Car ............................. 7.0 ................ 38.0
General Motors
"C" Body ............................. 9.0 ................ 32.0
"E" & "K" Bodies ................ ( 1) 8.0-9.0 ............. 32.0
"F" Body ............................. 9.0 ................ 24.0
"G" Body
With HD6/HT6 Compressor ............ 8.0 ................ 32.0
With V5 Compressor ................. 9.0 ................ 32.0
"H" Body ............................. 9.0 ................ 32.0
"J" Body ............................. 9.0 ................ 24.0
"M" Body ............................. 3.4 ........... 19.0-21.0
"N" Body ............................. 9.0 ................. ( 2)
"S" Body ......................... ( 3) 4.1 ........... 22.9-26.5
"V" Body ............................. 9.0 ................ 33.5
"W" Body ............................. 9.0 ................ 30.0
"Y" Body ............................. 9.0 ................ 24.0
"Z" Body ............................. 5.0 ................ 24.0
( 1) - Total system capacity, unless otherwise noted. Refer to
underhood A/C specification label in engine compartment for
specified oil type.
( 2) - Refrigerant capacity for Alero and Grand Am is 36.0 ounces.
Refrigerant capacity for Cutlass and Malibu is 28.0 ounces.
( 3) - Compressor oil capacity.
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REFRIGERANT OIL & R-134a REFRIGERANT CAPACITY (LIGHT TRUCKS & VANS) \
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Application ( 1) Oil Oz. Refrigerant Oz.
Chrysler Corp.
Caravan, Town & Country, & Voyager
Without Rear Unit ................... 9.0 ............... 34.0
With Rear Unit ..................... 13.4 ............... 44.0
Dakota ................................ 8.1 ............... 28.0
Durango
Without Rear Unit ................... 5.5 ............... 28.0
With Rear Unit ...................... 8.0 ............... 30.0
Ram Pickup ............................ 8.1 ............... 30.0
Ram Van/Wagon
Without Rear Unit ................... 8.0 ............... 34.0
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With Rear Unit ..................... 10.0 ............... 46.0
Ford Motor Co.
"E" Series
With Rear Unit ..................... 13.0 ............... 64.0
Without Rear Unit ................... 9.0 ............... 44.0
Expedition & Navigator ................ (2) ................ ( 2)
Explorer & Mountaineer ................ 7.0 ............... 30.0
F150/F250 Pickup ...................... 9.0 ............... 32.0
F250HD/F350 Pickup .................... 9.0 ............... 32.0
Ranger ................................ 7.0 ............... 30.0
Villager
With Rear Unit ..................... 11.0 ............... 56.0
Without Rear Unit ................... 7.0 ............... 32.0
Windstar
With Rear Unit ..................... 13.0 ............... 56.0
Without Rear Unit ................... 9.0 ............... 44.0
General Motors
"C" & "K" Series
Pickup & Sierra ..................... 8.0 ............... 32.0
Crew Cab & Utility .................. 8.0 ............... 36.0
Suburban, Tahoe & Yukon
With Rear Unit ..................... 11.0 ............... 64.0
Without Rear Unit ................... 8.0 ............... 36.0
"G" Series
With Rear Unit ..................... 11.0 ............... 78.0
Without Rear Unit ................... 8.0 ............... 48.0
"J" Series ............................ 3.4 ............... 21.0
"L" & "M" Series
With Rear Unit ..................... 11.0 ............... 48.0
Without Rear Unit ................... 8.0 ............... 32.0
"P" Series ............................ 8.0 ................ ( 2)
"S" & "T" Series
2.2L ................................ 9.0 .......... 30.0-32.0
4.3L ................................ 8.0 .......... 30.0-32.0
"U" Series
With Rear Unit ..................... 11.0 ............... 46.0
Without Rear Unit ................... 8.0 ............... 32.0
Jeep
Cherokee .............................. 8.1 ............... 20.0
Grand Cherokee ........................ 5.8 ............... 24.0
Wrangler .............................. 8.1 ............... 20.0
( 1) - Total system capacity, unless otherwise noted. Refer to
underhood A/C specification label in engine compartment for
specified oil type.
( 2) - Refrigerant oil and/or refrigerant capacity not available from
manufacturer. Refer to underhood A/C specification label in
engine compartment.
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REFRIGERANT OILS
* PLEASE READ THIS FIRST *
NOTE: Use ONLY the specified oil for the A/C system or compressor.
Always check the underhood A/C specification label or A/C
compressor label before adding refrigerant oil to A/C
compressor/system.
NOTE: For compressor applications, see COMPRESSOR APPLICATIONS &
BODY DESIGNATIONS. DO NOT exceed A/C system refrigerant oil
capacity when servicing system. See CAPACITIES.
Page 17 of 1691
Use only NEW, moisture-free refrigerant oil in A/C systems.
Refrigerant oil is highly refined with a very low moisture content.
Oil container must be tightly closed when not in use, or moisture from
air will be absorbed into refrigerant oil.
Refrigerant R-134a systems use Polyalkylene Glycol (PAG)
refrigerant oil. Using a mineral oil based lubricant with R-134a
systems will result in A/C compressor failure due to lack of proper
lubrication.
All compressors have different lubrication requirements and
use different Polyalkylene Glycol (PAG) refrigerant oils. Use only the\
specified PAG refrigerant oil for the appropriate system and A/C
compressor. Always check the underhood A/C specification label or A/C
compressor label before adding refrigerant oil to A/C
compressor/system. See listing of refrigerant oils currently available
from the vehicle manufacturers.
NOTE: PAG oil absorbs moisture very rapidly, 2.3-5.6 percent by
weight as compared to a mineral oil absorption rate of .005
percent by weight.
CHRYSLER CORP., JEEP & EAGLE
Use ND-8 PAG oil, SUN PAG 56 oil, SP-10 PAG oil, or SP-20 PAG
oil.
FORD MOTOR CO.
Use YN-12B or YN-12C PAG Refrigerant Oil (specification WSH-
M1C231-B) or SP-20 PAG Oil (specification WST-M1C231-B2).
GENERAL MOTORS
On all models except Saturn, use PAG Refrigerant Oil (Part
No. 12345923). On Saturn, use Saturn PAG refrigerant oil.
SERVICING PRECAUTIONS
DISCHARGING SYSTEM
Discharge A/C system, using approved refrigerant
recovery/recycling equipment before loosening any fittings. Follow
refrigerant recovery/recycling equipment manufacturer's instructions.
DISCONNECTING LINES & FITTINGS
After system is discharged, carefully clean area around all
fittings to be opened. Always use 2 wrenches when loosening or
tightening fittings. Some refrigerant lines are connected with a
spring-lock coupling. Special tools may be required to disconnect
lines. To prevent dirt and moisture from entering system, cap all
openings as soon as lines are removed. DO NOT remove service valve
caps until ready to connect lines and fittings.
NOTE: All R-134a based systems use 1/2-16 ACME threaded fittings.
Ensure all replacement parts match the connections of the
system being worked on.
CONNECTING LINES & FITTINGS
Always use new a gasket or "O" rings when connecting lines or
Page 18 of 1691
fittings. Coat "O" rings with refrigerant oil, and ensure it is not
twisted during installation. To prevent damage to lines and fittings,
always use 2 wrenches or specified tools. Keep refrigerant oil off
fitting threads. Long term contact of oil on threads may cause future
damage to threads.
PLACING SYSTEM IN OPERATION
After component service or replacement has been completed,
evacuate system thoroughly with a vacuum pump. Charge system with
proper amount of refrigerant. See REFRIGERANT OIL & REFRIGERANT
SPECIFICATIONS article in GENERAL SERVICING. Perform leak test. After
system has been leak tested, check system operation.
NOTE: A/C systems normally will not need additional refrigerant oil
unless oil loss has occurred due to ruptured lines, leaking
compressor seals, compressor overhaul or component
replacement.
CHECKING COMPRESSOR OIL
FORD FS-10 10-CYLINDER
1) Slowly discharge A/C system, using approved refrigerant
recovery/recycling equipment. Remove A/C compressor. Drain as much
compressor oil from suction and discharge ports as possible. Rotate
compressor shaft 6-8 revolutions by hand, while pouring oil from
ports. Collect oil in a clean container and measure amount drained. DO
NOT reuse old refrigerant oil.
2) If amount drained is 3-5 ounces, add amount drained plus
one ounce of refrigerant oil to replacement compressor. If amount
drained is more than 5 ounces, add the same amount that was drained
from old compressor. If amount drained is less than 3 ounces, add 3
ounces to compressor. See FORD FS-10 COMPONENT REFRIGERANT OIL
CAPACITIES table. Add refrigerant oil to replacement compressor
through suction port.
3) Use new "O" rings on refrigerant lines. Install A/C
compressor. Evacuate and charge system. Perform leak test. Ensure A/C
system is operating properly.
FORD FS-10 COMPONENT REFRIGERANT OIL CAPACITIES
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Component Ounces
Accumulator/Receiver-Drier
Except Villager .............................................. ( 1)
Villager ..................................................... 2.0
Condenser
Except Contour, Cougar, Mystique, Villager & Windstar ........ 1.0
Contour & Mystique ........................................... 0.7
Villager ................................................. 1.0-1.7
Windstar ..................................................... 1.5
Evaporator
Except Contour, Mystique, Villager & Windstar ................ 3.0
Contour & Mystique ........................................... 0.7
Villager (Front Or Rear) ................................. 1.5-2.5\
Windstar ..................................................... 4.0
Other Components ( 2) ........................................... 2.0
Refrigerant Lines ( 3)
Contour, Cougar & Mystique ................................ 1.0-1.7
( 1) - Drain and measure oil from old accumulator. On Continental,
Page 19 of 1691
Contour, Cougar, Escort, Mustang, Mystique, Tracer and Windstar,
drill two 1/2" holes in bottom of old accumulator, and drain. On
all models, add the same amount of oil drained plus 2 ounces of
refrigerant oil to new accumulator.
(2) - Add refrigerant oil following replacement of other system
components such as hoses, fixed orifice tube, A/C clutch cycling
switch, A/C compressor pressure relief valve, system pressure
cut-off switch, or service valve, compressor shaft seal, "O"
ring or hose leaks.
( 3) - If all lines have been replaced.
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HARRISON HD6/HT6, HD6/HR-6HE 6-CYL., V5 5-CYL. & V7 7-CYL.
NOTE: Replacement compressor may be shipped with 8-9 ounces of
refrigerant oil. Drain shipping refrigerant oil into a clean
container and retain for use.
1) If possible, operate system for several minutes to
stabilize system. Turn engine off. Discharge A/C system, using
approved refrigerant recovery/recycling equipment. Remove A/C
compressor. Drain and measure refrigerant oil from old compressor
through suction and discharge ports, and drain plug.
2) If no compressor oil leaks exist, and more than one ounce
is drained, add amount drained from old compressor. If less than one
ounce is drained from old compressor, add 2 ounces of refrigerant oil.
3) When replacing other A/C components, add specified amount
of refrigerant oil to component. See HD6/HT6, HD6/HR-6HE, V5 & V7
COMPONENT REFRIGERANT OIL CAPACITIES table. Install compressor drain
plug and compressor. Evacuate and charge system. Perform leak test.
Ensure A/C system is operating properly.
NOTE: Approximately 3 ounces of refrigerant oil, suspended in
refrigerant, will be lost due to a large, abrupt leak. When
replacing a faulty A/C component, add amount of oil specified
for component plus 3 ounces to compensate for oil loss. If
oil cannot easily be added to component, add it to
accumulator.
HD6/HT6, HD6/HR-6HE V5 & V7 COMPONENT REFRIGERANT OIL CAPACITIES
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Component Ounces
Cars
Accumulator/Receiver-Drier
Except "F", "N", "V" & "W" Bodies .......................... 3.5
"F", "N", "V" & "W" Bodies ................................. ( 1)
Compressor
"C" Body ................................................... ( 2)
"E", "K", "V" & "Y" Bodies ................................. 2.0
"F", "G", "H", "J", "P", "N" & "W" Bodies .................. ( 3)
Condenser .................................................... 1.0
Evaporator ................................................... 3.0
Trucks & Vans
Accumulator/Receiver-Drier
Except "U" Series .......................................... 3.5
"U" Series ................................................. ( 4)
Compressor
Except "U" Series .......................................... ( 3)
"U" Series ................................................. ( 2)
Condenser
Except "U" Series .......................................... 1.0
"U" Series ................................................. ( 4)
Page 20 of 1691
Evaporator
Except "U" Series .......................................... 3.0
"U" Series ................................................. (4)
( 1) - Add amount drained from old accumulator/receiver-drier plus one
ounce.
( 2) - Ensure replacement compressor contains the same amount of
refrigerant oil as was drained from old compressor.
( 3) - Drain and measure refrigerant oil from old compressor. If old
compressor had less than one ounce, add 2 ounces of refrigerant
oil to replacement compressor. If old compressor had more than
one ounce, add the same amount of refrigerant oil to replacement
compressor.
( 4) - Information not available from manufacturer.
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NIPPONDENSO 10-CYLINDER
General Motors (Metro & Tracker)
1) Discharge A/C system, using approved refrigerant
recovery/recycling equipment. Remove A/C compressor. Drain, measure
and discard refrigerant oil from old compressor. Drain refrigerant oil
from replacement compressor. Add refrigerant oil to replacement
compressor equal to amount drained from oil compressor.
2) Add specified amount of refrigerant oil to components that
are replaced during compressor replacement. See NIPPONDENSO 10-
CYLINDER COMPONENT REFRIGERANT OIL CAPACITIES table. Install A/C
compressor. Evacuate and charge system. Perform leak test.
NIPPONDENSO 10-CYLINDER COMPONENT REFRIGERANT OIL CAPACITIES
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Component Ounces
Compressor ..................................................... 3.0
Condenser .................................................. 0.7-1.0
Receiver-Drier ................................................. 0.3
System Total ................................................... 3.4
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NIPPONDENSO 10PA17/10PA17C 10-CYL.
Chrysler Corp. (Avenger & Sebring Coupe)
1) Remove A/C compressor. Drain and measure oil from old
compressor. Replacement compressor is shipped with 3.4 ounces of oil.
From replacement compressor, drain the difference between system oil
capacity and amount of oil drained from replacement compressor.
2) Add specified amount of refrigerant oil to components that
are replaced during compressor replacement. See 10PA17/10PA17C
COMPONENT REFRIGERANT OIL CAPACITIES table. When replacing components
listed, DO NOT exceed system total capacity.
Chrysler Corp. & Jeep (Caravan, Concorde, Grand Cherokee,
Intrepid, LHS, Neon, Town & Country, Voyager & 300M)
1) Discharge A/C system, using approved refrigerant
recovery/recycling equipment. Disconnect refrigerant hoses at
compressor. Remove compressor bolts and A/C compressor.
2) Remove suction port on top of A/C compressor, and drain
and measure oil. On Grand Cherokee, add the same amount of oil drained
from old compressor to replacement compressor.
3) On all other models, add amount of oil to compressor equal
to the total system capacity minus amount retained in components that
are not being replaced. See 10PA17/10PA17C COMPONENT REFRIGERANT OIL
CAPACITIES table. Install A/C compressor. Evacuate and charge A/C