PREPARATION — Service Tools (Cont'd) — Charging Hose / Adapter Valve
HA-11prose procedureService Tools (Cont'd)
Charging hose
Charging-hose connection
- 1Completely tighten high pressure valve, low pressure valve and vacuum pump valve cocks of gauge manifold.
- 2Connect charging hoses to high and low pressure lines.
- 3Connect charging hose fitted with valve core to charging cylinder.
- 4Connect vacuum pump hose to vacuum pump.
IMPORTANT
High and low pressure hoses are color coded to prevent wrong connection.
Charging-hose colour coding
High pressure line hose
ColorRed
Low pressure line hose
ColorYellow
Vacuum pump hose
ColorBlue or green
CAUTION
Check each hose for cracks. If found, discard the hose.
Do not use any hose if bulges are found.
Check the rubber packing. If any deterioration or cracks are found, replace it with a new one.
Installing the adapter valve
Install the adapter valve to each of the high pressure and low pressure service valves so that air purging from the charging hose can be omitted. This also ensures that refrigerant leakage upon disconnection of the hose can be prevented.
Adapter valve installation
- 1Before connecting the adapter valve to the on-vehicle service valve, turn the adapter valve handle fully counterclockwise to retract the pin.Check the packing for any sign of deterioration or cracks. If any abnormality is found, replace it with a new one.
RHA585B - 2Connect the charging hose to the adapter valve.
IMPORTANT
Turning the handle clockwise will cause the on-vehicle service valve pin to be pushed open by the adapter valve pin, thus opening the refrigerant passage.
Turning the handle counterclockwise will close the passage. Before removing the adapter valve from the on-vehicle service valve, be sure to fully turn the handle counterclockwise to shut off the refrigerant passage.