NOTE: Recent findings by the EPA indicate that refrigerant is harmful to the Earth's protective Ozone layer. When discharging refrigerant, avoid allowing refrigerant to enter the atmosphere. Refrigerant recovery/recycle system should be used whenever possible instead of discharging system. Many states now require by law the use of recovery/recycle systems. Check local laws before proceeding.

Close both valves on manifold gauge set. Connect manifold gauge set to high and low side service valves. See SERVICE VALVE LOCATIONS in this article.
If manifold gauges or charging station are not equipped with depressing pins, install Adapters (T71P-19703-S and R) on high and low pressure hoses.
Connect a discharge hose to center connector on manifold gauge set. Place open end of discharge hose in garage exhaust outlet or in a well ventilated area if recovery system is not used. Slightly open low side valve and release refrigerant without losing refrigerant oil.
When system is nearly discharged, open high side valve to release any pressure trapped in compressor. Close manifold gauge set valves immediately after discharging to prevent entry of moisture.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Discharging A/C System

Use the Manual With the Right Hardware

When to See a Mechanic

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