Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Forester 1999-2004 Approved Subaru Forester 1999-2000 MECHANICAL COMPONENTS SECTION Air Conditioning System MSA5T0125A27839

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4-7   [W8A0]                               SERVICE PROCEDURE
8. Leak Testing

8. Leak Testing                                                   3. CALIBRATE LEAK DETECTOR
                                                                  Refer to the manufacturer's instructions for the par-
A: INSPECTION                                                     ticular type of detector used and calibrate the
The following points should be kept in mind when                  instrument.
conducting a refrigerant leak test.
1) The A/C system to be tested must have an
                                                                  Always make sure that the probe tip filter is
adequate refrigerant charge to begin with.
                                                                  clean and free of contamination.
2) The area where the leak test is conducted must
be free of wind and drafts, with still air being the
ideal condition.
3) The atmosphere where the leak test is con-
ducted must be free of refrigerant contamination.
4) Operate the A/C system for approx. 10 minutes,
then turn the engine off and begin the leak test.
5) Refrigerant gas is heavier than air, therefore
always hold the probe below the connection being
6) When checking for a leak along a length of
hose or tube, the leak detector probe must be
moved slowly, approx. 25 mm (1 in) per second
making sure probe does not come in contact with
the component being tested.
7) When checking for a leak at a certain point, the
leak detector probe must be held at that point for
at least 5 seconds.
With gauges connected to the A/C system, operate
the A/C and confirm that the high side pressure is                                                          G4M0610
above 690 kPa (7.03 kg/cm2, 100 psi). If not,
evacuate and charge the system before leak
checking.                                    4. LEAK TEST -- HIGH-PRESSURE SIDE
                                                                  Operate the A/C system for approx. 10 minutes,
                                                                  then turn the engine off and begin the leak test.
                                                                  1) Begin at the connection of the high-pressure
                                                                  tube to the evaporator, and work your way along
                                                                  the high-pressure side of the system to the com-
                                                                  pressor. There are three places to check each tube
                                                                  2) Check the area:

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