Subaru Forester Air Conditioning System 1999 2000 (14) PDF

10. Performance Test
A: INSPECTION
1. VEHICLE SET UP
In order to obtain meaningful test results, the
vehicle must be set up to meet the following con-
ditions:
Vehicle in shade
No wind
All vehicle doors closed
Front windows open
Hood open
Engine speed set at 1,500 rpm.
A/C ON
Temperature control lever ? Maximum cold
Air source ? Recirculation
Blower speed ? 4th position (High)
Operate A/C for 10 minutes (Minimum) before
taking measurement.
2. MEASUREMENTS
After 10 minutes (Minimum) of A/C operation and
using accurate test equipment, take the following
measurements (in order):
1) Evaporator intake air temperature at recircula-
tion door.
2) Evaporator discharge air temperature at center
grill.
3) Condenser (Ambient) intake air temperature
measured 0.9 m (3 ft) in front and in line with the
center of the condenser
4) Suction (Low) side pressure
5) Discharge (High) side pressure
NOTE:
If only one thermometer is available; 1) take the
ambient measurement first; then 2) the intake air;
and 3) discharge air temperature.
11. Compressor
A: INSPECTION
1. COMPRESSOR CLUTCH
NOTE:
Compressor clutch trouble is often caused by
clutch slippage and noise. Check and take correc-
tive measures, as required.
1) Remove belt cover.
B4M0090
2) Check that clearance between drive plate and
pulley over the entire perimeter is within specifica-
tions.
Clearance:
0.45
0.15 mm (0.0177
0.0059 in)
B4M0091
3) Check that voltage applied to magnetic coil is at
least 10.5 volts.
4) When noise is noted, check that it originates in
either compressor or pulley bearing.
21
[W11A1] 4-7SERVICE PROCEDURE
11. Compressor

Subaru Forester Air Conditioning System 1999 2000 (14) Summary of Content

10. Performance TestA: INSPECTION1. VEHICLE SET UPIn order to obtain meaningful test results, thevehicle must be set up to meet the following con-ditions: Vehicle in shade No wind All vehicle doors closed Front windows open Hood open Engine speed set at 1,500 rpm. A/C ON Temperature control lever Maximum cold Air source Recirculation Blower speed 4th position (High) Operate A/C for 10 minutes (Minimum) beforetaking measurement.2. MEASUREMENTSAfter 10 minutes (Minimum) of A/C operation andusing accurate test equipment, take the followingmeasurements (in order):1) Evaporator intake air temperature at recircula-tion door.2) Evaporator discharge air temperature at centergrill.3) Condenser (Ambient) intake air temperaturemeasured 0.9 m (3 ft) in front and in line with thecenter of the condenser4) Suction (Low) side pressure5) Discharge (High) side pressureNOTE:If only one thermometer is available; 1) take theambient measurement first; then 2) the intake air;and 3) discharge air temperature.11. CompressorA: INSPECTION1. COMPRESSOR CLUTCHNOTE:Compressor clutch trouble is often caused byclutch slippage and noise. Check and take correc-tive measures, as required.1) Remove belt cover.B4M00902) Check that clearance between drive plate andpulley over the entire perimeter is within specifica-tions.Clearance:0.450.15 mm (0.01770.0059 in)B4M00913) Check that voltage applied to magnetic coil is atleast 10.5 volts.4) When noise is noted, check that it originates ineither compressor or pulley bearing.21[W11A1] 4-7SERVICE PROCEDURE11. Compressor