You lastly found and repaired the leaky HVAC trouble in your F-150, however now you have to recharge it. This article will to walk you with the process of appropriately recharging her air conditioning to acquire cool waiting blowing through your vents once again.

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This article uses to the Ford F-150.

HVAC leaks are a common issue in most vehicles, especially when lock really start to rack increase the miles. If you"ve experienced symptoms choose a lack of cooling, quick cycling that the compressor clutch (compressor is transforming on and off rapidly), or the clutch doesn"t engage at all, your refrigerant level is most likely lower 보다 it needs to be. If over there is inadequate refrigerant in the system, the pressure deserve to drop to the allude where the mechanism is unable to nearby the pressure cycling switch. When you"ve tracked down and repaired the leak in your system that led to the short refrigerant issue, it"s time come recharge, however it"s an important that you perform it the right method to continue to be legal and avoid damaging the environment. Store reading and also we"ll walk you v the process.

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

Step 1 – Locate and also open the low push valve

The low pressure valve is located under the hood ~ above the passenger side, in the rear corner, tucked underneath one of two people the dryer cylinder or a fuse box, depending upon which model truck girlfriend have. There are two bolts that organize the dryer cylinder in location on the side—remove the 2 bolts and pull it up just enough to accessibility the low pressure valve. If holding the dryer cylinder the end of the way with one hand, unscrew and remove the low push valve with the other hand. If your is located under the fuse box, you can simply eliminate it without having to disconnect anything.

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

Step 2 – Recharge the system

Connect the hose from a can of the refrigerant come the low push valve. Start the truck and also turn her air conditioning on high, and make sure the vents space open. Note the pressure reading ~ above the valve, which have to be at least 45 psi. If it"s listed below 45 psi, there isn"t enough refrigerant in the system and also it must be recharged. Pull the manage or push the switch on the refrigerant deserve to to begin filling the system, keeping an eye top top the gauge. Use an additional can if one isn"t enough. Fill till you reach approximately 55 psi, i m sorry is a safe level the ensures friend aren"t overcharging the mechanism (and resulting in some high-quality damage). As soon as full, rotate off the truck and also disconnect the hose. Replace the valve cap and also any contents you had to eliminate to gain accessibility to the valve.

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Figure 5. Hook increase the hose on the refrigerant can to the low press valve.
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Figure 6. Start the truck, revolve on the wait conditioning, and also take note of the psi presented on the gauge.

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Figure 7. Fill the device with refrigerant till you reach approximately 55 psi.

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