UNIT REPAIR
COMPONENT LOCATOR
SP17 Compressor
- Compressor Assembly
- Coil and Housing Assembly
- Pulley and Bearing Assembly
- Clutch Drive Assembly
- Shaft Bolt
- Shim (Air gap 1.0, 0.5, 0.3, 0.2)
- Pulley Retainer
- Coil Retainer
SP17 AIR CONDITIONING COMPRESSOR OVERHAUL
Clutch Drive Assembly
Tools Required
Disassembly Procedure
- Remove the compressor. Refer to "Compressor" in this section.
- Use the clutch hub holding tool J-33027 to keep the clutch drive plate and the hub assembly from turning.
- Remove the shaft nut using the shaft nut socket.
- Pull and remove the clutch drive assembly up by hand.
Assembly Procedure
- Install the clutch drive assembly.
- Check the air gap with the wire gauge roughly by pressing the clutch drive assembly before fastening the shaft bolt. (Air Gap : 0.3~0.6 mm)
Notice : If air gap is not correct, change the shim to meet the air gap.
- Install the clutch plate and hub assembly retaining nut.
Tighten
Tighten the clutch drive assembly retaining nut to 13 N•m (10 lb-ft).
- Recheck the air gap with feeler gauge. (Air gap : 0.3~0.6 mm)
- Install the compressor. Refer to "Compressor" in this section.
Pulley and Bearing Assembly
Disassembly Procedure
- Disconnect the negative battery cable.
- Recover the refrigerant. Refer to "Discharging, Adding Oil, Evacuating, and Charging for A/C System" in this section.
- Remove the compressor. Refer to "Compressor" in this section.
- Remove the clutch drive assembly. Refer to "Clutch Drive Assembly" in this section.
- Remove the shims from the end of shaft.
- Remove the pulley and bearing assembly retaining ring.
- Pull the pulley up with both hands until the pulley and bearing assembly is free.
Installation Procedure
Notice : Do not use hammer to prevent the damage of pulley bearing.
- Locate the rotor pulley on the front head housing squarely and precisely.
- Increase push force on the pulley surface by both hands.
Caution : Listen for a distinct change of sound during installation process to make sure that it is seated properly.
- Spin the pulley by hand to check the proper installation of pulley.
- Install the pulley and bearing assembly retainer ring.
- The sharp edge side of the coil retainer should be placed on upper side.
- Squeezing is required after the installation to make sure that it was well installed.
- Determine how many shims and what type of shim to be use to make an air gap between 0.3~0.6 mm.
- Install the shims on the end of shaft.
- Install the clutch drive assembly. Refer to "Clutch Drive Assembly" in this section.
- Install the compressor. Refer to "Compressor" in this section.
Clutch Coil
Removal Procedure
- Disconnect the negative battery cable.
- Recover the refrigerant. Refer to "Discharging, Adding Oil, Evacuating, and Charging Procedures for A/C System" in this section.
- Remove the compressor. Refer to "Compressor" in this section.
- Remove the clutch drive assembly. Refer to "Clutch Drive Assembly" in this section.
- Remove the pulley and bearing assembly. Refer to "Pulley and Bearing Assembly" in this section.
- Remove the ring retainer-coil.
- Remove the coil and housing assembly.
Installation Procedure
- Prior to the assembly, make sure that the embossment on the coil plate should be placed in the location slot on the compressor pump so that coil couldn't be rotate.
- Location hole on the coil plate should be placed in the location pin on the compressor pump so that coil couldn't be rotate. (VM Diesel only)
- Place the coil and housing assembly.
Notice : Ring retainer-coil couldn't be seated if coil is not placed correctly.
- Make sure that the chamfer edge side of coil retainer should be placed on upper side.
- Install the coil and housing assembly retainer.
Notice : After assembling, squeezing is required to make sure that retainer was assembled well.
- Install the pulley and bearing assembly. Refer to "Pulley and Bearing Assembly" in this section.
- Install the clutch drive assembly. Refer to "Clutch Drvie Assembly" in this section.
- Install the compressor. Refer to "Compressor" in this section.
Clutch Function Test
- Perform the Clutch engagement and disengagement more than 2 times to check the proper Clutch operation.
- If the Clutch does not engage within 1 second with 10.5 volts, check the resistance of Coil. (Coil Resistance Specification is 3.3 ± 4% Ohms at 25°C)
Caution : Must not be reversed coil connteor polarity during clutch function test. If reversed, Diode should be shorted.
Compressor Oil Balancing
Oil Charge Requirement
All SP17 Compressors are supplied with 150+/-10cc oil charged in the compressor.
Care must be taken to ensure that the required oil quantity should be charged into the A/C system. Shortage of oil will cause compressor durability problems. Excessive oil in the system can result in knocking noise at start up of the compressor.
Compressor Oil Balancing Procedure
Compressor oil can be charged and drained through the Suction / Discharge Ports,
When a compressor is removed from the car for service, there are two methods to properly oil-balance the air-conditioning system:
- First Method :Flush whole A/C system and use a complete new unit of SP17 compressor, which is already charged with 150cc oil.
- Second Method :
- Drain and measure lubricating oil from the removed compressor. Measure the amount removed. (Usually, in the SP17 compressor there should retain an amount of 15~60cc of oil)
Notice : If major oil loss has occurred such as compressor case cracked, condenser rupture, flush A/C system and fit new replacement compressor. No lubricant check required.
- From the new replacement compressor, remove all the lubricating oil approximately 150 cc.
- Refill the new replacement compressor with the same amount of lubricating oil as measured in Step a). Use the "new" oil removed from replacement compressor.
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