Fig. 12. If Pressure is Below Normal
Fig. 13. Connect Pump and Evacuate
Attach Freon Tank - Open Tank Valve
System to Approximately 27"
Tool - ACL53-3, counterclockwise and slowly
release system pressure through manifold
8. When both high and low pressure gauges of the
Pressure Test Gauge Manifold read "O" P.S.I.
attach manifold center hose to Vacuum Pump, Tool
- ACL53-1 and evacuate until system reaches 27"
of mercury. See figure 13. CAUTION: Do not
connect center hose of the Pressure Test Gauge
Manifold to Vacuum Pump when there is still
pressure in system.
9. Turn low pressure gauge valve of the Pressure
Test Gauge Manifold, Tool - ACL53-3
clockwise until fully closed, then disconnect
Invert Fr eon tank on a scale and attach center
hose of the Pressure Test Gauge Manifold to
Freon tank. (Scale will measure amount of
Freon going into system. Fully charged system
has approximately 7 lbs.)
11. Open Freon tank valve.
12. By intermittently opening and closing low
pressure valve of the Pres-sure Test Gauge
- ACL53-3, (approximately 1/4 turn) allow
liquid Freon to be drawn into system until
pressure reaches 45 P.S.I. See figure 14.
13. Close low pressure valve of the Pressure Test
Gauge Manifold, Tool - ACL53-3, start
engine and run at 1500 R.P.M.