Drive clutch assembly
Necessary equipment
Clamping sleeve holder
Disassembly order
1. Remove compressor. See «Compressor» in this section.
2. Use clutch hub retainer J-33027 to hold the driven plate and clutch hub assembly from turning.
3. Loosen the shaft nut using the shaft nut tool.
4. Pull out by hand and remove the drive clutch assembly.
Assembly order
1. Install drive clutch assembly.
2. Roughly check the air gap with a wire gauge by pushing the drive sleeve assembly in before attaching the shaft bolt. (Air gap 0.3~0.6mm)
Note: If the air gap is out of specification, replace the shim with another shim that provides the correct gap.
3. Tighten the fastening nut of the driven disk and the clutch hub assembly.
Tighten
Tighten the mounting nut of the drive coupling assembly with a torque of 13 Nm (10 lb-ft).
4. Check the air gap again with a feeler gauge. (Air gap 0.3~0.6mm)
5. Install compressor. See «Compressor» in this section.
Pulley and bearing assembly
Disassembly order
1. Disconnect the negative battery cable.
2. Extract coolant. See «Procedures for discharging, topping up oil, evacuating and charging the air conditioning system» in this section.
3. Remove compressor. See «Compressor» in this section.
4. Remove drive clutch assembly. See «Drive clutch assembly» in this section.
5. Remove shims from shaft end.
6. Remove the circlip of the pulley and bearing assembly.
7. Pull the pulley up with both hands until the pulley and bearing assembly are free.
Installation procedure
Note: Do not use a hammer to avoid damaging the pulley bearing.
1. Position the rotor pulley evenly and accurately on the front cover housing.
2. Increase the pressure on the pulley surface with both hands.
Attention! Listen for a distinct change in sound during the installation process to ensure proper fit.
3. Quickly rotate the pulley by hand to ensure that the pulley is correctly installed.
4. Install the circlip of the pulley and bearing assembly.
5. The sharp edge of the spool stopper must be at the top.
6. Crimping is required after installation to ensure correct assembly.
7. Determine the number and type of shims to obtain an air gap in the range of 0.3~0.6mm.
8. Install shims on the end of the shaft.
9. Install drive clutch assembly. See «Drive clutch assembly» in this section.
10. Install compressor. See «Compressor» in this section.
Clutch coil
Removal procedure
1. Disconnect the negative battery cable.
2. Extract coolant. See «Procedures for discharging, topping up oil, evacuating and charging the air conditioning system» in this section.
3. Remove compressor. See «Compressor» in this section.
4. Remove drive clutch assembly. See «Drive clutch assembly» in this section.
5. Remove pulley and bearing assembly. See «Pulley and bearing assembly» in this section.
6. Remove the coil retaining ring.
7. Remove coil and housing assembly.
Installation procedure
1. Before assembling, make sure that the tab on the spool plate is located in the installation groove of the compressor pump so that the spool cannot rotate.
2. The locating hole on the spool plate must be located on the compressor pump locating pin so that the spool cannot rotate. (Only VM Diesel)
3. Install coil and housing assembly.
Note: The spool retaining ring will not seat if the spool is not seated correctly.
4. The beveled edge of the spool stopper must be on top.
5. Install the coil and housing stopper assembly.
Note: Crimping is required after installation to ensure correct assembly of the stopper.
6. Install pulley and bearing assembly. See «Pulley and bearing assembly» in this section.
7. Install drive clutch assembly. See «Drive clutch assembly» in this section.
8. Install compressor. See «Compressor» in this section.
Function test of the clutch
1. Engage and disengage the clutch more than 2 times to ensure that the clutch functions properly.
2. If the clutch does not engage within 1 second at 10.5 volts, check the resistance of the coil. (Nominal coil resistance 3.3 ohm±4% at 25°C)
Attention! During the function test of the coupling, there should be no reversal of polarity at the coil connector. If this happens, the diode will close.
Compressor oil balancing
All SP17 compressors are shipped charged with 150+/-10cc oil. cm.
Care must be taken to ensure that the required amount of oil enters the air conditioning system when charging. Lack of oil leads to compressor durability problems. Too much oil in the system can cause a knocking noise when starting the compressor.
Compressor oil balancing procedure
Compressor oil can be charged and drained through the suction/discharge ports.
When the compressor is removed from the vehicle for service, there are two ways to properly balance the A/C oil:
1. First way: Flush the A/C system completely with running water and use a brand new SP17 compressor already loaded with 150cc of oil. cm.
2. Second way:
- Drain the lubricating oil from the compressor and measure its volume. Measure the amount removed. (Normally, the SP17 compressor should be able to hold 15~60cc oil. cm)
Note: If there has been a major loss of oil, such as cracks in the compressor housing, damage to the condenser, flush the A/C system with running water and install a new compressor for replacement. Lubrication check is not required.
- Remove all lubricating oil from a new replacement compressor, approximately 150cc. cm.
- Fill the new replacement compressor with the same amount of lubricating oil as measured in step a). Use "new" oil removed from the compressor for replacement.