Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Legacy 1995-1999 Approved Subaru Legacy 1995 1995 Service Manual MECHANICAL COMPONENTS SECTION AIR CONDITIONING SYSTEM MSA5TCD95L5725

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  SERVICE PROCEDURE                                                4-7
                                                   4. O-ring Connections


          4. O-ring Connections
          1. GENERAL
          The following points should be kept in mind when assem-
          bling O-ring connections.
          1) Avoid unnecessary handling and contact of O-rings with
          your hands, since even clean fingers contain body acids,
          which can contaminate the O-ring surface.
          2) Do not handle O-rings with gloves, shop towels, etc.,
          since lint particles may cling to the O-ring, possibly caus-
          ing a leak upon assembly.
          3) Always lubricate O-rings before assembly to allow the
          O-ring to seat itself properly.
          4) Be certain to use torque wrenches when tightening
          O-ring fittings, because overtightening can not only dam-
          age the O-ring, but it can distort the tube end as well.




          2. REMOVE PROTECTIVE SEALS
          Just prior to making the connection, remove the protective
          seals.
          CAUTION:
          If for any reason you have to stop before making a
          connection, recap the tube, component or fitting.



G4M0581


          Visually inspect the O-ring surface, the O-ring mating
          surface, the threads and the connection points. If a defec-
          tive part is found, replace it.
          The O-ring must sit square against the tube bead. If
          necessary, slide the O-ring into proper position with clean
          hands.



G4M0582




                15
4-7                       SERVICE PROCEDURE
4. O-ring Connections


                                  3. LUBRICATE THE COMPONENTS
                                  For lubrication of the components, use only refrigerant oil
                                  as described in the appropriate service manual. Apply oil
                                  from an oil squirt gun or other closed container. Do not use
                                  your finger to spread the oil over the O-ring.
                                  Apply a small amount of refrigerant oil to the top and sides
                                  of the O-ring. The area covered by oil should include the
                                  O-ring and the tube bead.




                        G4M0583

                                  4. TORQUE THE FITTING
                                  Using a back-up wrench in conjunction with a calibrated
                                  torque wrench, torque the connection to the midrange of
                                  the specification.
                                  After completion of torquing, use a clean shop towel to
                                  remove any excess oil from the connection or any oil that
                                  may have dripped on the vehicle body or other parts.
                                  CAUTION:
                                  If a leak is suspected after torquing, do not retighten
                        G4M0584   or retorque the connection. Instead, disassemble the
                                  connection, remove the O-ring, and inspect the O-ring,
                                  threads, joints and seating surfaces.




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