You lastly found and repaired the leaky HVAC trouble in your F-150, yet now you should recharge it. This write-up will to walk you through the procedure of effectively recharging her air air conditioning to get cool air blowing through your vents as soon as again.

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This article applies to the Ford F-150.

HVAC leaks space a usual issue in many vehicles, particularly when lock really begin to rack increase the miles. If you"ve skilled symptoms like a lack of cooling, fast cycling the the compressor clutch (compressor is turning on and off rapidly), or the clutch doesn"t interact at all, your refrigerant level is likely lower than it requirements to be. If over there is poor refrigerant in the system, the pressure deserve to drop come the allude where the system is can not to close the push cycling switch. Once you"ve tracked down and also repaired the leak in your device that resulted in the low refrigerant issue, it"s time to recharge, yet it"s vital that you do it the right way to continue to be legal and also avoid damaging the environment. Keep reading and we"ll walk you with the process.

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Materials NeededOne or 2 cans the R134a (with hose and gauge attached)Assorted typical 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 one of two people the dryer cylinder or a fuse box, depending on which version truck you have. There room two bolts that organize the dryer cylinder in place on the side—remove the 2 bolts and pull it increase just enough to accessibility the low press valve. If holding the dryer cylinder the end of the way with one hand, unscrew and remove the low press valve with the various other hand. If yours is located under the fuse box, you deserve to simply remove it without having to disconnect anything.

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Figure 1. Remove the bolts to accessibility the low press valve.
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Figure 2. The low pressure valve is situated 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 water tap from a can of the refrigerant come 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 pressure reading top top the valve, which must be at the very least 45 psi. If it"s listed below 45 psi, there isn"t enough refrigerant in the system and also it have to be recharged. Traction the manage or push the button on the refrigerant deserve to to start filling the system, keeping an eye top top the gauge. Use second can if one isn"t enough. Fill until you reach around 55 psi, i m sorry is a for sure level that ensures you aren"t overcharging the system (and leading to some high value damage). When full, turn off the truck and also disconnect the hose. Change the valve cap and also any materials you had actually to eliminate to gain access to the valve.

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Figure 5. Hook increase the water tap on the refrigerant can to the low press valve.
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Figure 6. Start the truck, turn on the waiting 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 about 55 psi.

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