Operation CHARM: Car repair manuals for everyone.
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Rear Head/Head Gasket/Rear Valve Plate/Suction Reed Plate

Tapping Front Or Rear Head Free Of Cylinder:






Remove or Disconnect

1. Discharge the refrigerant system and remove the compressor from the car. Drain the oil from the compressor into a container, measure and discard the oil.

2. Remove the clutch drive and hub assembly. pulley rotor and bearing assembly and the clutch coil per previous procedure.

3. Remove the six (6) compressor through bolts and gaskets. Discard the gaskets.

4. Using a wood block and plastic headed hammer tap around the edge of the rear head to disengage head from the compressor cylinder.

5. Separate the rear head, head gasket, rear valve plate, suction reed plate and cylinder to rear head O-ring. Discard the head gasket and the 0nng.

Install or Connect

1. Place rear head on clean flat surface. Position head with control valve at 6 o'clock position.

2. Assemble guide pins in mounting holes at 11 and 5 o'clock positions.

3. Assemble bead gasket over guide pins, with elongated hole at upper left pin (11 o'clock).

4. Assemble the rear valve plate over guide pins with elongated hole at upper left pin. Lower into place.

5. Assemble the suction reed plate over guide pins insuring the position of the elongated hole at upper left pin. Remove guide pin at 5 o'clock position.

6. Lubricate a new cylinder to rear head O-ring with clean 525 viscosity refrigerant oil and install O-ring in cylinder O-ring groove. O-ring seal surface of rear head may be oiled to ease assembly.

7. With O-ring in place on rear of cylinder assembly locate relief boss for compressor guide pin at 6 o'clock position, directly above hole in the side of the rear head. Carefully lower cylinder and front head assembly over guide pin to rear head.

8. Using both hands, press cylinder and front head assembly down into rear head.

9. Add new through bolt gasket to the through bolts and install the bolts into the compressor assembly. Be sure four (4) of the through bolts thread into the rear head before removing the guide pins. Alternately tighten the through bolts in progressive torque until a torque of 8-10 N.m (72-84 in. lbs.) is achieved on all six (6) bolts.

10. Install new shaft seal kit per previous procedure.

11. Add amount of new 525 viscosity refrigerant oil to be added and determined in Step 1 of Remove. Install test plate J-9625-A. Place shaft nut on shaft and rotate compressor shaft several times.

12. Leak test complete compressor assembly according to (Bench-Check) Leak Testing procedure.

13. Remove shaft nut and install clutch parts on compressor according to previous procedure.

14. Install compressor assembly on car.

15. Evacuate and charge the refrigerant system.