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Seal Replacement

NOTE: Manufacturer does not recommend seal replacement for the Nippondenso compressor (used on some 1980 and later Ford Motor Co. models). Compressor should he replaced as an assembly (minus pulley and clutch) if seal failure occurs.
  1. REMOVE SHAFT NUT 

    Hold clutch hub stationary with spanner wrench. Remove shaft nut with a socket wrench. Remove lock washer (if so equipped).

    Fig 1: Removal Of Shaft Nut
    G09361415Courtesy of NOT AVAILABLE

    Tool Reference No. 1 

    Spanner Wrench

  2. REMOVE CLUTCH PLATE 

    Screw clutch front plate remover into hub. Tighten center screw and remove front plate and shims.

    CAUTION: Do not use screwdrivers to pry front plate off of pulley, as this may damage front plate.
    Fig 2: Removal Of Clutch Plate
    G09361416Courtesy of NOT AVAILABLE

    Tool Reference No. 2 

    Front Plate Remover

  3. REMOVE PULLEY 

    Remove pulley snap ring and pull pulley assembly off of compressor.

    Tool Reference No. 3 

    Fig 3: Removal Of Pulley
    G09361417Courtesy of NOT AVAILABLE

    External Snap Ring Pliers

  4. REMOVE COIL 

    Remove clutch coil snap ring disconnect wires and slide coil off of front cover.

    Tool Reference No. 3 

    Fig 4: Removal Of Coil
    G09361418Courtesy of NOT AVAILABLE

    External Snap Ring Pliers

  5. REMOVE KEY 

    Remove shaft key by gripping it with a side cutter and puling. A shaft key removal tool may also be used.

    Fig 5: Removal Of Key
    G09361419Courtesy of NOT AVAILABLE
  6. REMOVE FRONT COVER 

    Remove 6 compressor through bolts. Then, remove front cover by tapping on cover outside diameter with a plastic hammer. Remove and discard front cover "O" ring.

    Fig 6: Removal Of Front Cover
    G09361420Courtesy of NOT AVAILABLE
  7. REMOVE VALVE PLATE 

    If reed valve assembly came off with front cover, lift inlet reed valve from cover and use valve plate remover to pull valve plate out of cover. Carefully remove gasket from valve plate.

    Tool Reference No. 4 

    Fig 7: Removal Of Valve Plate
    G09361421Courtesy of NOT AVAILABLE

    Valve Plate Remover

  8. REMOVE SEAL 

    Remove shaft seal by sliding it off of shaft. If seal came off with front cover, pull seal out of cover.

    Fig 8: Removal Of Seal
    G09361422Courtesy of NOT AVAILABLE
  9. REMOVE SEAL SEAT 

    Remove dowel pins from front cover and place cover on a flat surface with cover neck facing up. Remove felt seal retainer (Chrysler only) and felt seal from cover neck. Using a drift drive seal seat out of cover.

    Fig 9: Removal Of Seal Seat
    G09361423Courtesy of NOT AVAILABLE
  10. INSTALL SEAL SEAT 

    Lubricate seal seat and seal seat "O" ring with refrigeration oil. Select installer tool or socket with same diameter as outer diameter of seal seat. Use installer tool or socket to install seal seat in front cover with groove on sealing surface facing up.

    Fig 10: Installation Of Seal Seat
    G09361424Courtesy of NOT AVAILABLE
  11. INSTALL SEAL 

    If reed valve assembly came off with front cover, install dowel pins in compressor body and carefully position inlet reed valve, valve plate and new gasket on compressor body with holes aligned with dowel pins. Lubricate seal with refrigeration oil and slide it onto shaft with sealing surface toward end of shaft.

    Fig 11: Installation Of Seal
    G09361425Courtesy of NOT AVAILABLE
  12. INSTALL FRONT COVER 

    Lubricate a new front cover "O" ring with refrigeration oil and position it in groove. Carefully install front cover, ensuring holes are aligned with dowel pins. Install 6 compressor through bolts and torque to 260 INCH lbs. (Chrysler) or 18-19 ft. lbs. (Ford). Install shaft key. Install felt seal (call compressors) and felt seal retainer (Chrysler only in front cover neck.

    Fig 12: Installation Of Front Cover
    G09361426Courtesy of NOT AVAILABLE
  13. INSTALL COIL 

    Ensure coil alignment pin is tightly seated in front cover. Install coil, making sure hole on back of coil aligns with pin. Install snap ring, bevel side out, making sure it is fully seated in groove. Reconnect wires.

    Tool Reference No. 3 

    Fig 13: Installation Of Coil
    G09361427Courtesy of NOT AVAILABLE

    External Snap Ring Pliers

  14. INSTALL PULLEY 

    Install pulley assembly. If necessary, hold block of wood on grease slinger and tap gently until pulley is seated. Install snap ring, bevel side out, making sure it is fully seated in groove.

    CAUTION: Do nor mar frictional (front) surface of pulley. Straighten grease slinger if distorted by tapping.
    Fig 14: Installation Of Pulley
    G09361428Courtesy of NOT AVAILABLE
  15. INSTALL CLUTCH PLATE 

    Install shims and clutch front plate on shaft. With front plate tight against shims, measure for a 0.020 - 0.035" air gap between plate and pulley face. Add or subtract shims as necessary. Install lock washer (if so equipped) and shaft nut. Hold hub with spanner wrench and torque nut to 12 ft. lbs. Recheck air gap.

    Fig 15: Installation Of Clutch Plate
    G09361429Courtesy of NOT AVAILABLE
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