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

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This article uses to the Ford F-150.

HVAC leaks space a usual issue in many vehicles, specifically when lock really start to rack up the miles. If you"ve knowledgeable symptoms prefer a absence of cooling, fast cycling of the compressor clutch (compressor is turning on and off rapidly), or the clutch doesn"t interact at all, her refrigerant level is likely lower 보다 it needs to be. If over there is inadequate refrigerant in the system, the pressure can drop to the allude where the device is can not to nearby the push cycling switch. As soon as you"ve tracked down and also repaired the leak in your device that led to the short refrigerant issue, it"s time to recharge, but it"s vital that you execute it the right method to continue to be legal and also avoid damaging the environment. Store reading and 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 open the low push valve

The low pressure valve is situated under the hood on the passenger side, in the rear corner, tucked underneath either the dryer cylinder or a fuse box, depending upon which design truck girlfriend have. There room two bolts that host the dryer cylinder in place on the side—remove the 2 bolts and pull it increase just sufficient to accessibility the low pressure valve. If holding the dryer cylinder out of the way with one hand, unscrew and also remove the low push valve through the other hand. If yours is located under the fuse box, you deserve to simply eliminate it without having actually 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 press valve is located underneath this box.
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Figure 3. Gaining access to the low pressure 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 have the right to of the refrigerant to the low push valve. Begin the truck and also turn her air air conditioning on high, and also make sure the vents room open. Keep in mind the push reading top top the valve, which must be at the very least 45 psi. If it"s listed below 45 psi, over there isn"t enough refrigerant in the system and also it must be recharged. Pull the take care of or press the button on the refrigerant deserve to to begin filling the system, maintaining an eye ~ above the gauge. Use second can if one isn"t enough. Fill till you reach about 55 psi, i m sorry is a for sure level that ensures friend aren"t overcharging the device (and leading to some high value damage). As soon as full, rotate off the truck and also disconnect the hose. Change the valve cap and 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 can to the low push valve.
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Figure 6. Start the truck, revolve on the waiting conditioning, and also take note of the psi presented on the gauge.

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

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