Honda Accord/Prelude 1984-1995 Repair Guide

Compressor

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REMOVAL & INSTALLATION



1984-89 Accord and 1984-87 Prelude

See Figures 1, 2, 3 and 4

  1. If possible, operate the engine at idle speed and run the air conditioning system for a few minutes.
  2.  
  3. Turn the air conditioning system and the engine off. Disconnect the negative battery cable and disconnect the compressor clutch wire from the air conditioning compressor.
  4.  
  5. Safely discharge the air conditioning system using the proper recovery/recycling equipment.
  6.  
  7. Loosen the power steering pump adjusting and mounting bolts.
  8.  
  9. Remove the power steering belt.
  10.  



Click image to see an enlarged view

Fig. Fig. 1: Nippodenso compressor mounting on Prelude and 1984-85 Accord

  1. Remove the power steering pump. Leave the hoses attached; just move the pump out of the way.
  2.  



Click image to see an enlarged view

Fig. Fig. 2: Keihin compressor mounting on Preludes and 1984-85 Accord

  1. Disconnect the hoses from the compressor and cap the hoses and ports immediately to keep out dirt. Disconnect the brackets on the suction and discharge hose.
  2.  
  3. Loosen the compressor mounting and adjusting bolts; remove the belt.
  4.  
  5. Remove the condenser cooling fan and motor mounting frame at the radiator.
  6.  



Click image to see an enlarged view

Fig. Fig. 3: Nippodenso compressor used on 1986-89 Accords

  1. Remove the mounting bolts and the compressor. Set the compressor on the engine support beam.
  2.  



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Fig. Fig. 4: Keihin compressor mounting on 1986-89 Accords

  1. Remove the compressor bracket. Remove the compressor from the engine compartment. If the compressor is to be replaced, note that two types of compressor are used: Keihin or Nippondenso. They are not interchangeable; the original type must be reinstalled.
  2.  

To install:
  1. If a new compressor is being installed, add 1 oz. (30 cc) of refrigerant oil through the suction port on the compressor.
  2.  
  3. Install the compressor bracket. Tighten the bolts to 34 ft. lbs. (47 Nm).
  4.  
  5. Install the compressor; tighten the bolts snug only.
  6.  
  7. Install the fan and frame.
  8.  
  9. Install the compressor belt. Final tighten the mounting bolts to 34 ft. lbs. (47 Nm); adjust the belt tension.
  10.  
  11. Install new O-rings onto the hoses. Apply a small amount of refrigerant oil to the O-rings and threads of the fittings, then connect the hoses.
  12.  
  13. Install the power steering pump and belt; adjust the belt.
  14.  
  15. Connect the negative battery cable.
  16.  
  17. Evacuate and recharge the air conditioning system.
  18.  

1990-93 Accord

See Figure 5

  1. If possible, run the engine at idle for a few minutes with the compressor engaged.
  2.  
  3. Switch the engine and compressor off, then disconnect the negative battery cable.
  4.  
  5. If so equipped, disable the Supplemental Restraint System (SRS).
  6.  
  7. Safely discharge the air conditioning system using the proper recovery/recycling equipment.
  8.  
  9. Remove the power steering pump mounting bolt, adjusting bolt, bracket and belt. Remove the power steering pump but do not disconnect any fluid hoses.
  10.  
  11. Remove the cruise control actuator mounting bolts, unplug the wiring connector and remove the actuator. Do not kink or loosen the actuator cable.
  12.  
  13. Remove the alternator harness clamp and disconnect the alternator harness.
  14.  
  15. Remove the alternator mounting bolt, adjusting bolt and adjuster bracket.
  16.  
  17. Remove the compressor belt; remove the alternator.
  18.  
  19. Unplug the connectors for the condenser fan motor, noise suppressor and the compressor. Remove the fan mounting shroud and fan.
  20.  



Click image to see an enlarged view

Fig. Fig. 5: Nippodenso compressor mounting on 1990-93 Accords. Hadsys compressor is similar

  1. Disconnect the suction and discharge hoses from the compressor. Cap the lines and fittings immediately to keep out dirt.
  2.  
  3. Remove the compressor mounting bolts and remove the compressor. If necessary, remove the bracket from the engine. If the compressor is to be replaced on 1993 models, note that two types of compressor are used: Hadsys or Nippondenso. They are not interchangeable; the original type must be reinstalled.
  4.  

To install:
  1. If the mounting bracket was removed, reinstall it and tighten the bolts to 36 ft. lbs. (50 Nm).
  2.  
  3. If replacing the compressor:
    1. Drain the oil from the old compressor into a graduated container. Note the amount drained.
    2.  
    3. If the replacement compressor does not have oil added to it from the manufacturer, add the same amount drained from the old compressor to the new compressor. On Nippodenso compressors, use ND Oil 9, on Hadsys compressors use Hermetic 90 PX refrigerant oil. These refrigerant oils are usually available at your Honda dealer.
    4.  
    5. If the replacement compressor does have oil added to it, subtract the amount of oil drained from the old compressor from 3 1 / 3 fl. oz. (100 cc) for Nippodenso compressors or 4 1 / 3 fl. oz. (130 cc) for Hadsys compressors. This is the amount of oil which must be drained from the new compressor. For example, if 1 1 / 3 fl. oz. (40 cc) is drained from an old Nippodenso compressor, subtract this amount from 3 1 / 3 fl. oz. (100 cc). The result is 2 fl. oz. (60 cc) which must be drained from the new compressor.
    6.  

  4.  
  5. Install the compressor; tighten the mounting bolts to 18 ft, lbs. (25 Nm).
  6.  
  7. Install new O-rings on the hose ends. Lightly lubricate the O-rings with refrigerant oil, then connect the hoses to the compressor. Tighten the mounting nuts to 22 ft. lbs. (30 Nm).
  8.  
  9. Install the condenser fan and engage the wiring connectors.
  10.  
  11. Install the alternator and the alternator/compressor belt.
  12.  
  13. Connect the alternator wiring harness and secure the harness clamp.
  14.  
  15. Install the cruise control actuator.
  16.  
  17. Install the power steering pump and belt.
  18.  
  19. If applicable, enable the SRS.
  20.  
  21. Connect the negative battery cable.
  22.  
  23. Evacuate and recharge the air conditioning system.
  24.  

1994-95 Accord

See Figure 6

  1. If possible, run the engine at idle for a few minutes with the compressor engaged.
  2.  
  3. Switch the engine and compressor off. Disconnect the battery cables, then disable the Supplemental Restraint System (SRS).
  4.  
  5. Safely discharge the air conditioning system using the proper recovery/recycling equipment.
  6.  
  7. Remove the power steering pump but do not disconnect any fluid hoses.
  8.  
  9. Remove the alternator.
  10.  
  11. Unplug the connectors for the condenser fan motor and the compressor. Remove the fan mounting shroud and fan.
  12.  



Click image to see an enlarged view

Fig. Fig. 6: Compressor mounting on 1994-95 Accords

  1. Disconnect the suction and discharge hoses from the compressor. Cap the lines and fittings immediately to keep out dirt.
  2.  
  3. Remove the compressor mounting bolts and remove the compressor. If necessary, remove the bracket from the engine. If the compressor is to be replaced, note that two types of compressor are used: Hadsys or Nippondenso. They are not interchangeable; the original type must be reinstalled.
  4.  

To install:
  1. If the mounting bracket was removed, reinstall it and tighten the bolts to 36 ft. lbs. (50 Nm).
  2.  
  3. If replacing the compressor:
    1. Drain the oil from the old compressor into a graduated container. Note the amount drained.
    2.  
    3. If the replacement compressor does not have oil added to it from the manufacturer, add the same amount drained from the old compressor to the new compressor. On Nippodenso compressors, use ND Oil 8, on Hadsys compressors use Daphne Hermetic S10X refrigerant oil. These refrigerant oils are usually available at your Honda dealer.
    4.  
    5. If the replacement compressor does have oil added to it, subtract the amount of oil drained from the old compressor from 5 1 / 3 fl. oz. (160 cc). This is the amount of oil which must be drained from the new compressor. For example, if 1 1 / 3 fl. oz. (40 cc) is drained from the old compressor, subtract this amount from 5 1 / 3 fl. oz. (160 cc). The result is 4 fl. oz. (120 cc) which must be drained from the new compressor.
    6.  

  4.  

Use only refrigerant oil made expressly for use with R-134a systems. Do not use R-12 refrigerant, oil or components on R-134a systems and vice versa. Expensive system damage will result, as they are not compatible.

  1. Install the compressor; tighten the mounting bolts to 16 ft. lbs. (22 Nm).
  2.  
  3. Install new O-rings on the hose ends. Lightly lubricate the O-rings with refrigerant oil, then connect the hoses to the compressor. Tighten the mounting nuts to 7 ft. lbs. (10 Nm).
  4.  
  5. Install the condenser fan and engage the wiring connectors.
  6.  
  7. Install the alternator.
  8.  
  9. Install the power steering pump.
  10.  
  11. Enable the SRS, then connect the battery cables.
  12.  
  13. Evacuate and recharge the system.
  14.  

1988-91 Prelude

See Figure 7

  1. If possible, run the engine at idle for a few minutes with the compressor engaged. Switch the engine and compressor off.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Safely discharge the air conditioning system using the proper recovery/recycling equipment.
  6.  
  7. Cover the alternator with clean towels or rags. Remove the power steering pump from the vehicle.
  8.  
  9. Remove the alternator.
  10.  
  11. Unplug the compressor wiring connector.
  12.  
  13. Disconnect the suction and discharge hoses from the compressor. Cap or plug the fittings and ports immediately to prevent dirt from entering.
  14.  



Click image to see an enlarged view

Fig. Fig. 7: Compressor mounting on 1988-91 Preludes

  1. Remove the compressor mounting bolts and remove the compressor, resting it on the front beam or crossmember.
  2.  
  3. Remove the idler pulley.
  4.  
  5. Remove the mounting bolts, then remove the compressor bracket and dowel pins.
  6.  
  7. Remove the compressor from the vehicle. If the compressor is to be replaced, note that two types of compressor are used: Matsushita or Sanden. They are not interchangeable; the original type must be reinstalled.
  8.  

To install:
  1. Install the dowels and install the bracket. Tighten the horizontal bolt to 36 ft. lbs. (48 Nm) and the other bolts to 18 ft. lbs. (25 Nm).
  2.  
  3. Install the idler pulley.
  4.  
  5. If replacing the compressor:
    1. Drain the refrigerant oil from the old compressor into a graduated container. Note the amount drained.
    2.  
    3. If the replacement compressor does not have oil added to it from the manufacturer, add the same amount drained from the old compressor to the new compressor.
    4.  
    5. If the replacement compressor does have oil added to it, subtract the amount of oil drained from the old compressor from 4 fl. oz. (120 cc) for Sanden compressors or 4 1 / 3 fl. oz. (130 cc) for Matsushita compressors. This is the amount of oil which must be drained from the new compressor. For example, if 1 1 / 3 fl. oz. (40 cc) is drained from an old Matsushita compressor, subtract this amount from 4 1 / 3 fl. oz. (130 cc). The result is 3 fl. oz. (90 cc) which must be drained from the new compressor.
    6.  

  6.  
  7. Install the compressor. Tighten the bolts to 18 ft. lbs. (25 Nm).
  8.  
  9. Connect the suction and discharge hoses to the compressor. Tighten the retaining bolts to 22 ft. lbs. (30 Nm).
  10.  
  11. Engage the compressor connector.
  12.  
  13. Install the alternator.
  14.  
  15. Install the power steering pump.
  16.  
  17. Evacuate and recharge the refrigerant system.
  18.  

1992-95 Prelude

See Figure 8

  1. If possible, run the engine at idle for a few minutes with the compressor engaged.
  2.  
  3. Switch the engine and compressor off. Disconnect the battery cables, then disable the Supplemental Restraint System (SRS).
  4.  
  5. Safely discharge the air conditioning system using the proper recovery/recycling equipment.
  6.  
  7. Unplug the connectors for the condenser fan motor and the compressor. Remove the fan mounting shroud and fan.
  8.  
  9. Disconnect the suction and discharge hoses from the compressor. Cap the lines and fittings immediately to keep out dirt.
  10.  
  11. Remove the power steering pump belt.
  12.  



Click image to see an enlarged view

Fig. Fig. 8: Compressor mounting on 1992-95 Preludes

  1. Remove the compressor mounting bolts and remove the compressor. If necessary, remove the bracket from the engine.
  2.  

To install:
  1. If the mounting bracket was removed, reinstall it and tighten the nuts/bolts to 36 ft. lbs. (50 Nm).
  2.  
  3. If replacing the compressor:
    1. Drain the oil from the old compressor into a graduated container. Note the amount drained.
    2.  
    3. If the replacement compressor does not have oil added to it from the manufacturer, add the same amount drained from the old compressor to the new compressor.
    4.  
    5. If the replacement compressor does have oil added to it, subtract the amount of oil drained from the old compressor from 4 fl. oz. (120 cc). This is the amount of oil which must be drained from the new compressor. For example, if 3 fl. oz. (90 cc) is drained from the old compressor, subtract this amount from 4 fl. oz. (120 cc). The result is 1 fl. oz. (30 cc) which must be drained from the new compressor.
    6.  

  4.  

Use only refrigerant oil made expressly for use with R-134a systems. Do not use R-12 refrigerant, oil or components on R-134a systems and vice versa. Expensive system damage will result, as they are not compatible.

  1. Install the compressor; tighten the mounting bolts to 16 ft. lbs. (22 Nm).
  2.  
  3. Install the power steering pump belt.
  4.  
  5. Install new O-rings on the hose ends. Lightly lubricate the O-rings with refrigerant oil, then connect the hoses to the compressor. Tighten the nut/bolt to 16 ft. lbs. (22 Nm).
  6.  
  7. Install the condenser fan and engage the wiring connectors.
  8.  
  9. Enable the SRS, then connect the battery cables.
  10.  
  11. Evacuate and recharge the air conditioning system.
  12.  

 
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