OEM Chrysler LHS A/C Compressor Clutch

Chrysler LHS A/C Compressor Clutch Parts and Q&A

• Compressor Clutch
  4723014
  Q:

  How to Properly Install and Adjust an A/C Compressor Clutch on Chrysler LHS?

  A:

  Run the A/C clutch several times for five seconds and follow that with five seconds off after installing the clutch, using the highest blower speed possible, keeping the engine running between 1500 and 2000 rpm and making sure the system is in its A/C mode. If the clutch gap is too large, the clutch may not engage properly or may slip. Adding refrigerant is unnecessary before replacing the clutch, pulley, or coil, and all of this work can be done inside the vehicle. At first, unhook the negative cable from the battery, take off the serpentine belt, and unplug the wire harness from the compressor clutch coil. After that, pull out the bolts that hold the compressor and carefully lift the compressor from the mounting bracket in the engine compartment. Once the shaft bolt is out and there is still a band-type oil filter tool around the clutch plate, gently tap the clutch plate with a plastic hammer to get it and any shim(s) out. It is important to avoid using screwdrivers near the area between the clutch plate assembly and pulley. Get the pulley assembly off the compressor by sliding it off the shaft using a round tube and insert the adapter. Take out the screw on the coil wire bracket/ground clip, unplug the wire harness, remove the snap ring, and slide the field coil from the compressor housing. During installation, place the pin on the field coil's back end into the hole in the compressor end housing, hold the field coil so it sits properly, guide the lead wires safely, and secure the bracket for the diode and wire to the compressor housing using the one retaining screw. With the Snap Ring Pliers (C-4574), push the field coil retaining snap ring in, making certain the bevel is pointing outward and both eyelets are set to the side of the pin on the compressor. Set the pulley assembly onto the compressor and use a block of wood to gently hit on each side. Secure it with the retaining snap ring which you should put in place (bevel side facing out) with Snap Ring Pliers (C-4574). Should you decide to reinstate the first front plate and pulley, use the existing shim(s), otherwise cover the shaft shoulder with 2.54 mm (0.10 in.) of shims to support the front plate assembly. If you fit a new front plate and pulley assembly, adjust the dial indicator on the front plate, zero it out, put the clutch in engagement, and make sure the movement is about 0.35 to 0.65 mm (0.014 to 0.026 in.). Make shims thinner or thicker to see the desired level. Once you finish, put in the compressor shaft bolt and tighten it to 17.5 ± 2 Nm (155 ± 20 in. lbs.), checking the air gap at several spots to confirm it has not changed and finally give the pulley a spin for a check.