4
Damaged Valve Core Removing
1. Follow the steps in Diagnosing the A/C System to check that there is no refrigerant remaining
in the system. If not, follow the steps in Evacuating Refrigerant & Contamination to evacuate
the system.
2. Remove the couplers by pulling their sleeves back. Locate the valve core and select the right
tip of the provided valve core remover.
3. Fit the tip into the service port and onto the valve core. Turn the knob on the remover
counterclockwise to remove the damaged valve core.
4. Insert an identical new core and fasten it in place.
Charging an A/C System Low on Refrigerant
1. Refer to your vehicle’s service manual or the labels under the hood to determine how much
refrigerant your A/C system needs.
It is recommended that you use a refrigerant can containing more refrigerant than the full
charge of your vehicle.
2. Use the provided puncture can tap to prepare the refrigerant can. Turn its lever counterclockwise
until you see the pin fully retract inside and become a dot. Press its female port onto the tting of
the can and turn the tap counterclockwise until it rmly binds with the can. For resealable cans,
use the provided self-sealing can tap. Turn its knob counterclockwise till the pin inside becomes
a dot. Fit the port onto your resealable refrigerant can and turn the tap counterclockwise till
it binds with the can. Turn the lever/knob on the tap clockwise until you can’t go further to
puncture open the can.
3. Connect the couplers to the manifold gauge hoses and to the high and low-pressure service
ports following steps 3 and 4 in Setup. Make sure all the coupler and gauge knobs are fully
turned to be closed.
4. Connect the port on the can tap to the middle remaining hose, which is often yellow, being
sure you don’t turn the tap lever/knob open by accident. Use the provided 1/4” to 1/2” adapter
if necessary.
5. Start your vehicle and turn the A/C on. Adjust the cooling to the lowest and the fan to the
maximum.
6. Turn the coupler knobs clockwise to fully open them. Turn the high and low-pressure knobs on
the manifold gauge to open them.
7. Turn the lever/knob on the tap counterclockwise to open the tap. You should see the handle of
the low-pressure gauge move appreciably at rst and then slowly move along the graduation.
War ning! ONLY place the refrigerant can in locations inaccessible to heat sources and
direct sunlight. NEVER leave it and the gauges unattended when servicing your vehicle.
8. As the refrigerant goes, constantly check the readings of the manifold gauge against the stated
specications of your vehicle. Make sure the A/C system is working properly. If the handle of
the low-pressure gauge stops moving and the A/C system is not working as well as it should
be, set the refrigerant can upside down.
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