在鋁合金升降機發動機怠速及怠速不穩時會出現啪啪的響聲，且隨發動機轉速升高而加重，但在發動機穩定的中速運轉時，對于雙片式升降臺離合器，則可能是主動盤傳動凸塊與傳動槽或傳動銷與銷孔磨損松曠，在鋁合金升降機離合器分離或發動機怠速不穩時，主動盤周向擺動而產生異響;對于單片式升降臺離合器，則為壓盤與升降臺離合器蓋配合松曠所致。
Will be in the aluminum alloy elevator engine idle speed and idle speed instability of pops the sound, and with the engine speed increased and aggravated, but in stable engine speed operation, for two chip lifting platform clutch may is the active disk drive convex block and transmission groove or a drive pin and the pin hole wear Songkuang, in aluminum alloy lift the clutch or the engine idle speed instability, week of the driving disc to swing and abnormal sound; for monolithic lifting platform clutch, pressure plate and the lifting table clutch cover with looseness caused by. 

拆下鋁合金升降機離合器殼上的檢視口蓋板或底蓋，將鋁合金升降機離合器踏板踩到底，用旋具撥動中間主動盤和壓盤進行檢查。若徑向間隙過大，說明配合松曠，應更換。如果鋁合金升降機離合器沒有分離不徹底或打滑現象，可繼續使用。
Open aluminum alloy elevator clutch shell view port cover or bottom cover, aluminum lift the clutch pedal foot in the end, by spin with toggle between active plate and pressure plate are examined. If the radial clearance is too large,that with Songkuang, should be replaced. If the aluminum alloy elevator clutch does not separate from the incomplete or slipping phenomenon, can continue to use.