1999 DODGE RAM service

"R" ABBREVIATION TABLE

"R" ABBREVIATION TABLE
ABBREVIATION DEFINITION RABS Rear Anti-Lock Brake System RAC Remote Accessory Control RAM Random Access Memory RAP Retained Accessory Power RECIRC Recirculation RED Red RH Right hand ROM Read Only Memory RPM Revolutions Per Minute RVB Rear Vacuum Break RWAL Rear Wheel Anti-Lock Brake RWD Rear Wheel Drive Recirc. Recirculate or Recirculation Reg. Regulator Rly. Relay

"S" ABBREVIATION TABLE

"S" ABBREVIATION TABLE
ABBREVIATION DEFINITION SAW Spark Angle Word _ SBC Single Bed Converter _ SBEC Single Board Engine Controller _ SC Super Charged _ SCC Spark Control Computer _ SCS Air Suction Control Solenoid _ SDM Supplemental Restraint System Diagnostic Module _ SDU SRS Diagnostic Unit _ SEN Sensor _ SES Service Engine Soon _ SFI Sequential (Port) Fuel Injection _ SIG RTN Signal Return circuit _ SIL Shift Indicator Light _ SIR Supplemental Inflatable Restraint _ SMEC Single Module Engine Controller _ SOHC Single Overhead Cam _ SOL or SoL Solenoid _ SPFI Sequential Port Fuel Injection _ SPK Spark Control _ SPOUT Spark Output Signal _ SRS Supplemental Restraint System (Air Bag) _ SS 3/4-4/3 Shift Solenoid circuit _ SSI Solid State Ignition _ STAR Self-Test Automatic Readout _ STI Self Test Input circuit _ STO Self-Test Output _ SUB-O2 Sub Oxygen Sensor _ Sen. Or Sens. Sensor _ Sol. Solenoid _ Sprchg. Supercharger _ Strg. Steering _ Susp. Suspension _ Sw. Switch _ Sys. System _

"T" ABBREVIATION TABLE

"T" ABBREVIATION TABLE
ABBREVIATION DEFINITION T.V. Throttle Valve _ TAB Thermactor Air By-Pass _ TAC Thermostatic Air Cleaner _ TAD Thermactor Air Diverter _ TAN Tan _ TBI Throttle Body Injection _ TCC Torque Converter Clutch _ TCCS Toyota Computer Control System TDC Top Dead Center _ TDCL Total Diagnostic Communication TFI Thick Film Ignition system _ TGS Top Gear Switch (cancels SIL in THERMAC Thermostatic Air Cleaner _ THS Transmission Hydraulic Switch _ TP/TPS Throttle Position Sensor _ TPI Tuned Port Injection _ TPS Throttle Position Sensor/Switch TS Temperature Sensor _ TSB Technical Service Bulletin _ TTS Transmission Temperature Switch TV Thermovalve _ TWC Three-Way Catalyst _ Temp. Temperature _ Trans. Transaxle/Transmission _

"V" ABBREVIATION TABLE

"V" ABBREVIATION TABLE
ABBREVIATION DEFINITION V Valve _ VAF Vane Air Flow sensor or circuit _ VAPS Variable Assist Power Steering _ VAT Vane Air Temperature _ VATS Vehicle Anti-Theft System _ VBATT Vehicle Battery Voltage _ VCC Viscous Converter Clutch _ VIN Vehicle Identification Number _ VIO Violet _ VLR Volt Loop Reserve _ VM Vacuum Modulator _ VM Vane Meter _ VOM Volt-Ohmmeter (Analog) _ VPWR Vehicle Power supply voltage (10-14 VREF Voltage Reference (ECA supplied ref VRV Vacuum Regulator Valve _ VSC Vehicle Speed Control sensor or sign VSS Vehicle Speed Sensor or signal _ VSV Vacuum Switching Valve _ Vac. Vacuum _ Volt. Voltage _

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

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,

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)

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 compressor. If amount drained is more
than 5 ounces, add the same amount that was drained from compressor.
If amount drained is less than 3 ounces, add 3 ounces to compressor.
See SANDEN SCROLL COMPONENT REFRIGERANT OIL CAPACITIES (TAURUS 3.4L
SHO) table. Add refrigerant oil through suction port.
3) Use new "O" rings on refrigerant lines. Install A/C
compressor. Perform leak test. Evacuate and charge system. Ensure A/C
system is operating properly.
SANDEN SCROLL COMPONENT REFRIGERANT OIL CAPACITIES (TAURUS 3.4L SHO)









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Component Ounces
Accumulator .................................................... (1)
Condenser ...................................................... 1.0
Evaporator ..................................................... 3.0
Other Components ........................................... ( 2) 2.0
( 1) - Drill two 1/2" holes in bottom of old accumulator, and drain and
measure oil. Add the same amount of oil drained plus 2 ounces of
new refrigerant oil to replacement accumulator.
( 2) - Add specified amount of refrigerant oil following replacement of
other system components such as hoses, fixed orifice tube, A/C
clutch cycling switch, compressor pressure relief valve, system
pressure cut-off switch, or service valve, compressor shaft
seal, "O" ring or hose leaks.









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SANDEN MSC90-C SCROLL
Chrysler Corp. (Avenger & Sebring Coupe)
1) Drain oil from old compressor, and measure amount drained.
Replacement compressor is shipped with 5.7 ounces of refrigerant 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 for components
that are replaced. See SANDEN MSC90-C COMPONENT REFRIGERANT OIL
CAPACITIES table. When replacing components listed, DO NOT exceed
system total capacity.
SANDEN MSC90-C COMPONENT REFRIGERANT OIL CAPACITIES









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Component Ounces
Condenser ...................................................... 0.5
Evaporator ..................................................... 2.0
Receiver-Drier ................................................. 0.3
Refrigerant Line ............................................... 0.3
System Total ................................................... 5.7









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SANDEN SD-7H15 7-CYLINDER
Chrysler Corp. & Jeep (Cherokee, Dakota, Durango, Ram Pickup
& Wrangler)
1) Discharge A/C system, using approved refrigerant
recovery/recycling equipment. Remove compressor and drain refrigerant
oil. Measure amount of oil removed and discard old oil.

recovery/recycling equipment. Measure amount of oil drained during A/C
system discharge. Disconnect refrigerant hoses at compressor. Remove
compressor bolts and A/C compressor.
2) Drain and measure oil from suction and discharge ports of
old compressor. Drain oil from replacement compressor and save. Add
the same amount of refrigerant oil to replacement compressor as was
drained from old compressor. When repairing an excessive leak in A/C
system, add one ounce additional oil to compressor.
3) Add proper amount of refrigerant oil to any components
being replaced. DO NOT add more refrigerant oil than A/C system total.
See SANDEN TRS-90 & TR-105 COMPONENT REFRIGERANT OIL CAPACITIES table.
Install compressor. Evacuate, charge and leak test A/C system. Ensure
A/C system operates properly.
SANDEN TRS-90 & TR-105 COMPONENT REFRIGERANT OIL CAPACITIES









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Component Ounces
Breeze, Cirrus, Sebring Convertible & Stratus
Compressor ................................................... (1)
Condenser .................................................... 1.0
Evaporator ................................................... 2.0
Receiver-Drier ............................................... 1.0
Refrigerant Line ............................................. 1.5
System Total ................................................. 5.0
Ram Van/Wagon
Compressor ................................................... ( 1)
Condenser .................................................... 1.0
Evaporator
Front ...................................................... 2.0
Rear ....................................................... 2.0
Receiver-Drier ............................................... 1.0
System Total
With Rear Unit ............................................ 10.0
Without Rear Unit .......................................... 8.0
( 1) - Ensure replacement compressor contains the same amount of
refrigerant oil as was drained from old compressor.









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ZEXEL ROTARY VANE
1) Slowly discharge A/C system, using approved refrigerant
recovery/recycling equipment. Remove old A/C compressor. Install
compressor oil drain Adapters (SA9149AC-5 and SA9149AC-6) to service
ports. Drain compressor oil from high-side port first and then low-
side port. Rotate compressor clutch plate in both directions to remove
oil from compressor. Measure oil amount drained, and discard oil.
2) New compressors are shipped with 5 ounces of refrigerant
oil and nitrogen gas. Open compressor sealing plugs slowly to release
nitrogen gas. Drain and measure oil into a clean container (this oil
will be used in new compressor).
3) Ensure amount of refrigerant oil in replacement compressor
is the same as amount removed from old compressor plus amount removed
during refrigerant recovery. This represents total system capacity,
minus amount retained in components that have not been replaced. See
ZEXEL COMPONENT REFRIGERANT OIL CAPACITIES table. Install compressor.
Evacuate, charge and leak test A/C system. Ensure A/C system operates
properly.









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CLUTCH ASSEMBLY
Removal (Except Grand Cherokee)
Remove compressor shaft bolt. Remove clutch plate and shims.
Tighten a 10-mm bolt into clutch hub bolt hole to remove clutch hub
and shims. Remove snap ring, and remove rotor and pulley assembly.
Remove snap ring, and disconnect clutch coil lead. Remove clutch coil.
Installation
1) Install clutch coil so pin in back of coil aligns with
hole in front compressor housing. Connect clutch coil lead. Install
snap ring with bevel side facing outward. Ensure snap ring is properly
seated in groove. Install rotor and pulley assembly. Install shims and
snap ring. Install clutch hub.
2) Install dial indicator at front of clutch hub to measure
clutch hub air gap. Using battery voltage, energize clutch coil.
Proper air gap is 0.014-0.026" (0.35-0.65 mm). Add or remove shims to
obtain correct air gap. Install compressor shaft bolt. On Concord and
Intrepid, tighten compressor shaft bolt to 11-15 ft. lbs. (15-20 N.m).\
On all other models, tighten compressor shaft bolt to 10 ft. lbs. (14
N.m).
NOTE: On Grand Cherokee, compressor clutch can be serviced in
vehicle without discharging A/C system.
Removal (Grand Cherokee)
Disconnect and isolate negative battery cable. Remove
serpentine drive belt. Remove compressor shaft bolt. Using a plastic
mallet, tap clutch plate to loosen from compressor shaft. Remove
clutch plate, shaft key and shims. See Fig. 5. Remove snap ring, and
remove pulley assembly. Remove snap ring, and disconnect clutch coil
lead. Remove clutch coil.
Installation
1) Install clutch coil so pin in back of coil aligns with
hole in front compressor housing. Connect clutch coil lead. Install
snap ring with bevel side facing outward. Ensure snap ring is properly
seated in groove. Align snap ring eyelets to the left or right of
clutch coil pin. Install rotor and pulley assembly. Install shims and
snap ring. Install clutch hub.
2) Hold clutch plate tight against shims and measure air gap
between clutch plate and pulley face. Air gap should be 0.014-0.026"
(0.35-0.65 mm). Add or remove shims as necessary. Install compressor
shaft bolt. Tighten compressor shaft bolt to 115 INCH lbs. (13 N.m).
To complete installation, reverse removal procedure.
3) After completing compressor clutch installation, start
engine. Set A/C-heater control to recirculated air mode and high
blower motor speed. Set engine speed to 1500-2000 RPM. Cycle
compressor on for 5 seconds and off for 5 seconds, about 20 times to
break-in clutch.
SHAFT SEAL
NOTE: Shaft seal replacement procedure is for 10PA17C compressor.
Shaft seal replacement procedure for 10PA17 compressor is not
available.
Removal
1) Discharge A/C system, using approved refrigerant
recovery/recycling equipment. Remove A/C compressor. Drain oil from
compressor, and measure amount drained. Remove clutch hub, shims,
rotor and pulley assembly, and clutch coil. See CLUTCH ASSEMBLY. See