SAFETY PRECAUTIONS
DWARNING: DENSO compressors are sealed, pressurized and contain factory-specified
amounts of refrigerant oil used in the original design of the unit. PRIOR to removal of shipping
plates or unit installation, you must read these instructions completely.
• 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 Procedure
NOTE: Before removal of the compressor, please refer to the appropriate manufacturer's
service manual for complete instructions.
1. Disconnect negative (-) ground cable from battery.
2. Disconnect A/C compressor lead wire from the vehicle harness.
3. Using a certified refrigerant recovery machine, reclaim the old refrigerant from the A/C
system.
4. Disconnect the suction and discharge
hoses from the compressor and quickly
cap the hose ends to reduce the amount
of moisture entering the A/C system.
5. Loosen and remove the compressor drive
belt.
6. Remove compressor mounting bolts and
remove compressor.
NOTE: The compressor contains a 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).
Compressor Installation
NOTE: Before installing the compressor, please refer to the appropriate manufacturer's service
manual for complete instructions.
1. Place the compressor on a flat surface with the service valve in an upright position.
Hand turn the clutch pressure plate a minimum of 10 times to release lubricant from the
compressor head.
2. Install the compressor to the engine and/or engine bracket, tighten and torque the bolts to
factory specifications. Refer to appropriate manufacturer's service manual for correct bolt
tightening sequence and torque.
3. Install compressor drive belt to compressor and tighten to factory specifications. Refer to
appropriate manufacturer's service manual for correct bolt tightening sequence and torque.
4. Using the appropriate compressor oil, lubricate and install new O-ring(s) to the suction
and discharge hoses. Connect and torque the hoses to compressor. Refer to the vehicle
manufacturer's service manual for proper belt tension.
2
Replacement
Compressor
Remove
the Excess Oil
(A - B)
Compressor
to be Replaced
Fig. 1