Disconnecting Lines & Fittings
After system is discharged, carefully clean area around all fittings to be opened. Always use 2 wrenches when tightening or loosening fittings. Some refrigerant lines are connected with a coupling. Special tools may be required to disconnect lines. Cap or plug all openings as soon as lines are removed. DO NOT remove shipping caps from replacement components until ready to install.
Some Lexus/Toyota vehicles require the use of A/C Line Coupling Tool (09870-00025) for liquid tube (high side) and A/C Line Coupling Tool (09870-00015) for suction tube (low side). To disconnect, note direction of pipe clamp lock (illustration on caution label) and place tool over clamp lock. Push down on tool and release clamp lock. To connect, lubricate new "O" rings with refrigerant oil. Ensure clamp lock is installed properly. See Fig 1.