Section 12-03C: Compressor and Clutch—6P148
1993 Mustang Workshop Manual
MAJOR SERVICE OPERATIONS

Head Gasket and O-Ring, Rear

Tools Required:

 

Removal

  1. Remove the clutch assembly from the compressor following the procedure for Clutch Field Coil Removal.
  1. Invert compressor and pour the refrigerant oil into a calibrated measuring container from the manifold openings and record the amount of oil removed.
  1. Install Housing Clamp T81P-19623-LH on the front of the compressor to retain the cylinder assembly and the front head in position. Then, clamp the tool in a vise.


Compressor Clamped for Rear Head Removal




  1. Hold the rear head and remove the six-cylinder bolts from the cylinder assembly.
  1. Separate the rear head assembly from the cylinder assembly and remove the O-ring from the head.
  1. Remove the two dowel pins.
  1. Remove inlet reed from the rear head and valve plate assembly.
  1. Remove the valve plate assembly from the rear head with Valve Plate Remover T81P-19623-PH.



  1. Carefully remove the cylinder gasket from the head and/or valve plate assembly.
  1. Wash the rear head, valve plate assembly and inlet reed with clean cleaning solvent and allow them to dry. DO NOT BLOW DRY the inlet reed or valve plate assembly with compressed air.
 

Installation

  1. Install the two dowel pins in the dowel pin holes of the cylinder assembly.
  1. Lubricate inlet reed with clean refrigerant oil. Assemble the inlet reed on the cylinder assembly aligning the dowel pin holes with the dowel pins.
  1. Install valve plate assembly on the cylinder head aligning the dowel pin holes with the dowel pins.
  1. Assemble cylinder gasket to the cylinder assembly taking care to align the dowel pin holes with the dowel pins.
  1. Install a new O-ring gasket lubricated with clean refrigerant oil into the O-ring groove of the rear head.
  1. Position the rear head to the cylinder assembly and align the dowel pins with the dowel pin holes.
  1. Hold the rear head in place. Install the six- cylinder bolts with new brass washers and tighten to 24.5-26.5 Nm (18-19 lb-ft) in a diagonally opposite sequence. DO NOT USE AIR TOOLS.
  1. Remove compressor from Housing Clamp T81P-19623-LH.
  1. Pour new refrigerant oil into the compressor. Refer to Adding Refrigerant Oil, During Compressor Replacement, as outlined.
  1. Leak test the compressor as outlined.
  1. Install the clutch assembly on the compressor following the procedure for Clutch Field Coil Installation. DO NOT USE AIR TOOLS.