自動變速箱維修過程中同樣也是能夠得到不少啟發的，如空調系統的狀況就可以通過自動變速箱維修中的視液窗來分析，這樣對及時檢測掌握空調系統的健康狀況是至關重要的。
Automatic transmission maintenance process is also able to get a lot of inspiration, for example, the condition of the air conditioning system can be analyzed through the automatic transmission maintenance window, which is very important to timely detect and master the health status of the air conditioning system.
若視液窗內清晰，而且出風口冷風效果不良，表明制冷劑不足。如果視液窗內布滿油斑，則表明制冷劑泄漏殆盡。若視液窗內污濁，表明制冷
If the liquid window is clear and the cold air effect of the air outlet is poor, it indicates that the refrigerant is insufficient. If the sight glass is full of oil spots, it indicates that the refrigerant is completely leaked. If the liquid window is dirty, it indicates refrigeration
劑內潤滑油過多。
There is too much lubricating oil in the agent.
自動變速箱維修專家分析得出結論，通過視液窗判斷空調系統狀態判斷汽車空調系統工作狀態的捷徑之一，可以了解制冷劑量是否合適，制冷
The expert analysis of automatic transmission maintenance concludes that one of the shortcut to judge the state of the air conditioning system through the liquid window is one of the shortcut to judge the working state of the automobile air conditioning system, which can know whether the refrigeration dosage is appropriate or not
系統是否進入了空氣等情況。若視液窗內有氣泡或泡沫，蒸發器表面結霜，表明制冷劑不足。空調系統啟動后，向冷凝器澆水，如果視液窗內
Whether there is air in the system. If there is bubbles or foam in the liquid window, frost on the evaporator surface indicates that the refrigerant is insufficient. After the air conditioning system is started, water the condenser if it is in the sight glass
無氣泡出現，表明制冷劑過多。
No bubbles appear, indicating that there is too much refrigerant.
在壓縮機運轉時，若視液窗內未見細小泡沫，表明制冷系統內沒有吸入空氣。在空調系統啟動初始，視液窗內有氣泡流動，片刻之后氣泡消失
When the compressor is running, if there is no fine foam in the liquid window, it indicates that there is no air inhalation in the refrigeration system. At the beginning of the start-up of the air-conditioning system, bubbles flow in the sight glass, and then disappear after a moment
，當提高轉速或降低轉速時，又出現氣泡；關閉空調系統，視液窗內立即出現氣泡，隨后又消失。
When the speed is increased or decreased, bubbles appear again; when the air conditioning system is turned off, bubbles appear immediately in the sight glass, and then disappear.
