AIR CONDITIONING SYSTEM TESTS, INSPECTIONS, AND ADJUSTMENTS - CONTINUED
REFRIGERANT COMPRESSOR TEST - CONTINUED
Procedures - Continued
N OT E
If cab temperature is above 77°F (25°C), then cab blower may need to be set to HIGH in order to reduce
temperature before starting procedure.
Test for high pressure (WP 0222 00). Start engine and set speed at approximately 1,200 rpm. Turn ON AC. Place a
sheet of cardboard over condenser in order to block flow of air. Limiting flow of air over condenser will cause discharge
pressure of compressor to increase. Check if discharge of compressor is able to increase up to 350 psi (2,414 kPa). Once
specified pressure is reached, immediately remove cardboard. If compressor passes test, discharge valves are operating
correctly. If not, replace AC system compressor (WP 0221 00).
END OF WORK PACKAGE
0018 00-21/(0018 00-22 Blank)