Denso DNP-471-8162 User manual

LA990009-1618.1
A/C Compressor Assembly with Magnetic
Clutch Removal and Installation Instructions
Prior to the installation of this DENSO First Time Fit®A/C Compressor Assembly with Magnetic
Clutch, you must read these instructions completely.
Definition of Terms
DWARNING: Describes precautions that should be observed in order to prevent injury or
death to the user during installation.
DCAUTION: Describes precautions that should be observed in order to prevent damage to
the vehicle or its components, which may occur during installation if sufficient
care is not taken.
NOTE: Provides additional information that facilitates installation work.
General Service Information and Requirements
DCAUTION: Only trained/certified personnel who have a thorough knowledge of automotive
air conditioning systems should perform repairs to the air conditioning system. In addition, only
personnel trained in an approved refrigerant-handling program may recover refrigerant from and
charge refrigerant to an automotive air conditioning system.
DWARNING: It has been determined that mixtures of R-134a and air can result in combustion
when exposed to a spark. Shop air should not be used for leak checking since it contains
moisture and can be combustible when used with R-134a.
REQUIRED TOOLS:
Safety Goggles
Assorted Hand Tools
Refrigerant Recovery Machine for specific (R-12/R-134a) refrigerant
Charging Station / A/C Manifold Gauge Set for specific (R-12/R-134a) refrigerant
Vacuum Pump for specific (R-12/R-134a) refrigerant
Electronic Leak Detector
Torque Wrench
Belt Tension Gauge
Refrigerant Identifier (recommended)

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SAFETY PRECAUTIONS
DWARNING: DENSO compressors are sealed, pressurized and contain factory-specified
amounts of refrigerant oil used in the original design of the unit.
• Always wear safety goggles.
• Avoid skin contact with refrigerant or refrigerant oil.
• Work in a well-ventilated area.
• Never release refrigerant into the atmosphere.
• Never expose refrigerant container to direct heat or temperature in excess of 125˚F.
• Never expose refrigerant to an open flame.
Compressor Removal Procedures
NOTE: For more detailed instructions please refer to the vehicle manufacturer’s service manual.
1. Identify the type of refrigerant before working on the vehicle.
2. Using a certified refrigerant recovery machine, reclaim the refrigerant in accordance with
any federal, state or local regulations from the A/C system.
3. Disconnect the negative (ground) cable from the battery.
4. Disconnect the A/C compressor lead wire from the vehicle harness.
5. Disconnect the hoses or hose assembly from the compressor and quickly cap the hose to
reduce the amount of moisture entering the A/C system.
6. Loosen and remove the compressor drive belt.
7. Loosen and remove the compressor mounting bolts.
8. Remove the compressor.

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Compressor Installation
NOTE: For more detailed instructions please refer to the vehicle manufacturer’s service manual
or service bulletins.
NOTE: In the case of A/C system contamination, additional A/C system components may
require replacement such as receiver driers, accumulators, expansion devices and certain
condenser designs.
NOTE: DENSO strongly recommends the replacement of the receiver drier or accumulator
when the A/C system has been opened and exposed to atmospheric conditions during the
repair process.
NOTE: To prevent possible debris from
entering the compressor, you may install
an in-line filter in the suction line near the
compressor. To prevent possible debris from
entering the expansion device, you may
install an in-line filter.
NOTE: The compressor contains a
complete ‘system’ charge of refrigerant
lubricant however you must compare the
level of compressor lubricant between the
new compressor and the compressor being
replaced (See Fig. 1).
1. Place the compressor on a flat surface,
hand turn the clutch pressure plate a
minimum of ten (10) times to release
lubricant from the compressor head.
2. Install the compressor to the engine and or engine bracket.
3. Tighten and torque the compressor mounting bolts. Refer to the vehicle manufacturer’s
service manual for correct bolt tightening sequence and torque.
4. Install and tighten the compressor drive belt. Refer to the vehicle manufacturer’s service
manual for proper belt tension.
5. Using the proper refrigerant oil, lubricate piping O-rings on the compressor.
DCAUTION: Refer to the vehicle manufacturer’s service manual for proper refrigerant oil.
6. Connect and torque the hose assembly to the compressor. Refer to the vehicle
manufacturer’s service manual for proper torque.
7. Connect the A/C compressor lead wire from the vehicle harness.
8. Connect the negative (ground) cable to the battery.
9. Evacuate and recharge A/C system
A. Protect eyes and skin during recharging by using safety glasses and appropriate hand
wear.
B. Connect manifold gauge set and vacuum pump or refrigerant charging station and
evacuate A/C system for a minimum of 30 minutes at 60-75 cmHG (24-29.5 inHG) of
vacuum.
C. Refer to the vehicle manufacturer’s service manual and charge with the proper refrigerant
charge.
D. Use the appropriate electronic leak detector to check the compressor and hose
connections for leaks.
DCAUTION: DO NOT overcharge the A/C system.
Fig. 1
Replacement
Compressor
Remove
the Excess Oil
(A - B)
Compressor
to be Replaced

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LA990009-1618.1
Instrucciones de extracción e instalación
conjunto de compresor de aire acondicionado
con clutch magnético
Antes de la instalación de este & apto del compresor del aire/acondicionado de la DENSO First
Time Fit®; Kit magnético del embrague, usted debe leer estas instrucciones totalmente.
Definición de términos
DADVERTENCIA: Describe precauciones que deben tomarse para evitarle al usuario lesiones
o la muerte durante la instalación.
DPRECAUCIÓN: Describe precauciones que deben tomarse para evitarle al vehículo o a
sus componentes daños que podrían ocurrir durante la instalación si no se
tiene el cuidado necesario.
NOTA: Proporciona información adicional que facilita el trabajo de instalación.
Información general de servicio y requisitos
DPRECAUCIÓN: Las reparaciones del sistema de aire acondicionado del vehículo deben
ser realizadas únicamente por personal capacitado que tenga un conocimiento a fondo de los
sistemas de aire acondicionado para automóviles, las herramientas correctas y un espacio
de trabajo adecuado. Adicionalmente, sólo personal capacitado en un programa aprobado
de manejo de refrigerante debe recuperar y cargar el refrigerante en los sistemas de aire
acondicionado para automóviles.
DADVERTENCIA: Se determinó que las mezclas de R-134a y aire pueden resultar en
combustión cuando quedan expuestas a una chispa. El aire de taller no se debe usar para
buscar pérdidas ya que contiene humedad y puede ser combustibe cuando se usa con R-134a.
HERRAMIENTAS NECESARIAS:
Anteojos de seguridad
Herramientas de mano varias
Máquina de recuperación de refrigerante para el refrigerante específico (R-12/R-134a)
Estación de carga/Conjunto de calibradores de múltiple de aire acondicionado para el
refrigerante específico (R-12/R-134a)
Bomba de vacío para el refrigerante específico (R-12/R-134a)
Detector electrónico de fugas
Llave de torsión
Medidor de tensión de bandas
Identificador del refrigerante (recomendado)

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PRECAUCIONES DE SEGURIDAD
DADVERTENCIA: Los compresores de DENSO están sellados, presurizados y contienen can-
tidades de aceite refrigerante especificadas de fábrica, las cuales se usan en el diseño original
de la unidad. ANTES de quitar las placas de envío o de instalar la unidad, usted debe leer estas
instrucciones.
• Use siempre anteojos de seguridad.
• Evite el contacto del refrigerante o el aceite refrigerante con la piel.
• Trabaje en un área bien ventilada.
• Nunca libere refrigerante a la atmósfera.
• Nunca exponga el recipiente del refrigerante al calor directo o a temperaturas superiores a
52°C (125°F).
• Nunca exponga el refrigerante a las llamas.
Extracción del compresor
NOTA: Para obtener instrucciones más detalladas, consulte el manual de servicio del
fabricante del vehículo.
1. Identifique el tipo de refrigerante antes de trabajar en el vehículo.
2. Con una máquina de recuperación de refrigerante certificada, recoja del sistema de aire
acondicionado el refrigerante siguiendo todas las disposiciones reguladoras federales,
estatales o locales.
3. Desconecte el cable negativo (de tierra) de la batería.
4. Desconecte el cable eléctrico del compresor del aire acondicionado del arnés del vehículo.
5. Desconecte las mangueras o el conjunto de mangueras del compresor y tape rápidamente
la manguera para reducir la cantidad de humedad que pueda entrar en el sistema de aire
acondicionado.
6. Afloje y quite la banda del compresor.
7. Afloje y quite los pernos de montaje del compresor.
8. Quite el compresor.