A/C Hand Turn Oil and Dye Injector with R-134a Snap Quick Coupler 1/4" SAE

Instruction:
1. Rotate the inside cylinder clockwise to the top
2. Unscrew the cover on the top of the smaller cylinder
3. Pour the liquid (Refrigeration Oil / Fluorescent Dye / Leak Detection Dye) into the cylinder
4. Tighten the cover
5. If the cylinder is not full filled with oil, then discharge the air is needed. (Rotate the bigger cylinder counterclockwise until the oil flows out at the end of the hose.)
6. Turn on the car air conditioner to the maximum air volume
7. Attach the low pressure quick connector to the cylinder
8. Locate the low pressure filler port of the car air conditioner and connect the other end of the quick connector.
9. Rotate the cylinder counterclockwise to inject the oil into the air conditioning system

Item Feature:
Hand-turn dye and oil injector for R-134a systems
Screw-type injector for oil or dye
Thread Size: 1/4" SAE
Material: aluminum alloy cylinder, rubber tube, pure copper connector
Hose pressure: 600-3000PSI
Capacity of the injector: 1/4 oz/7.5ml---2oz/60ml

Package Includes:
1X Oil and Dye Injector with R-134a Snap Coupler

PS. The scale marker is engraved as the pictures show.