You lastly found and repaired the leaky HVAC trouble in her F-150, yet now you must recharge it. This short article will to walk you with the procedure of effectively recharging your air conditioning to gain cool wait blowing with your vents once again.

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This article uses to the Ford F-150.

HVAC leaks space a common issue in many vehicles, particularly when they really start to rack up the miles. If you"ve competent symptoms prefer a absence of cooling, fast cycling the the compressor clutch (compressor is transforming on and off rapidly), or the clutch doesn"t communicate at all, your refrigerant level is most likely lower than it requirements to be. If over there is insufficient refrigerant in the system, the pressure deserve to drop to the suggest where the system is unable to near the pressure cycling switch. When you"ve tracked down and also repaired the leak in your system that resulted in the short refrigerant issue, it"s time come recharge, yet it"s an important that you execute it the right method to continue to be legal and also avoid damaging the environment. Keep reading and we"ll to walk you through the process.

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Materials NeededOne or 2 cans the R134a (with hose and also gauge attached)Assorted common size sockets/wrenches (optional)

Step 1 – Locate and also open the low push valve

The low pressure valve is situated under the hood top top the passenger side, in the rear corner, tucked underneath either the dryer cylinder or a fuse box, depending upon which design truck you have. There are two bolts that hold the dryer cylinder in place on the side—remove the two bolts and pull it up just enough to access the low push valve. While holding the dryer cylinder out of the method with one hand, unscrew and also remove the low press valve with the various other hand. If your is located under the fuse box, you have the right to simply eliminate it without having to disconnect anything.

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Figure 1. Eliminate the bolts to access the low press valve.
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Figure 2. The low push valve is situated underneath this box.
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Figure 3. Gaining access to the low pressure valve.
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Figure 4. Unscrew and remove the valve cap.

Step 2 – Recharge the system

Connect the water tap from a deserve to of the refrigerant to the low press valve. Begin the truck and turn your air air conditioning on high, and make certain the vents room open. Keep in mind the press reading top top the valve, which need to be at the very least 45 psi. If it"s below 45 psi, over there isn"t sufficient refrigerant in the system and it have to be recharged. Pull the handle or press the button on the refrigerant deserve to to begin filling the system, keeping an eye ~ above the gauge. Use second can if one isn"t enough. Fill till you reach approximately 55 psi, i m sorry is a safe level the ensures girlfriend aren"t overcharging the mechanism (and causing some high value damage). As soon as full, turn off the truck and also disconnect the hose. Replace the valve cap and also any components you had to remove to gain access to the valve.

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Figure 5. Hook increase the hose on the refrigerant have the right to to the low push valve.
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Figure 6. Begin the truck, turn on the waiting conditioning, and also take note of the psi presented on the gauge.

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Figure 7. To fill the device with refrigerant until you reach around 55 psi.

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