Hose/Line HVAC: Service and Repair

REPLACEMENT OF REFRIGERANT LINES

1. Recover refrigerant from air conditioning system.
2. Replace faulty tube or hose.

NOTE: Cap the open fittings immediately to keep moisture out of the system.

Tightening torques for the O-ring fittings
Fitting size and Torque
3/8 in. tube for liquid line 12 - 14 Nm (9 - 10 ft-lb)
1/2 in. tube for discharge line 20 - 24 Nm (15 - 18 ft-lb)
5/8 in. tube for suction line 30 - 34 Nm (22 - 25 ft-lb)
3. Evacuate, charge and test air conditioning system.
Refill capacity 650 - 750 g (23 - 26.5 oz)