（１）零件的幾何精度包括尺寸、形狀和表面相互位置精度。經(jīng)常檢驗的是尺寸、圓柱度、圓度、平面度、直線度、同軸度、平行度、垂直度、跳動等項目。根據(jù)維修特點，有時不是追求單個零件的幾何尺寸，而是要求相對配合精度。
(1) the geometric accuracy of parts includes the size, shape and surface position accuracy. The dimensions, cylindricity, roundness, flatness, straightness, coaxiality, parallelism, perpendicularity and runout are often examined. According to the characteristics of maintenance, sometimes it is not the geometric dimension of a single part, but the relative matching precision.
（２）零件的表面質(zhì)量包括表面粗糙度，表面有無擦傷、腐蝕、裂紋、剝落、燒損、拉毛等缺陷。
(2) the surface quality of the parts including surface roughness, surface scratches, corrosion, cracks, spalling, damage and galling defects.
（３）零件的物理力學性能 除硬度、硬化層深度外，對零件制造和修復過程中形成的性能，如應力狀態(tài)、平衡狀況、彈性、剛度、振動等也需根據(jù)‘情況適當進行檢測。
(3) the physical and mechanical properties of parts except the hardness and depth of hardened layer, formed on the performance of parts manufacturing and repair process, such as stress, balance, flexibility, stiffness, vibration and so on are required according to "appropriate detection.
（４）零件的隱蔽缺陷 包括制造過程中的內(nèi)部夾渣、氣孔、疏松、空洞、焊縫等缺陷，還有使用過程中產(chǎn)生的微觀裂紋。

(4) the hidden defects of parts include the defects of internal slag inclusion, porosity, porosity, welding seam and so on, and the micro cracks in the process of use.

（５）零部件的質(zhì)量和靜動平衡 如活塞、連桿組之間的質(zhì)量差，曲軸、風扇、軸、車輪等高速轉(zhuǎn)動的零部件的靜動平衡。
(5) the quality of parts and the static and dynamic balance, such as the quality difference between piston and connecting rod group, the static and dynamic balance of crankshaft, fan, shaft, wheel and other high-speed rotating parts.
（６）零件的材料性質(zhì)如零件合金成分、滲碳層臺碳量、各部分材料的均勻性、中石墨的拆出、橡膠材料的老化變質(zhì)程度等。
(6) the material properties of parts such as parts of alloy composition, the carburized layer Taiwan carbon, each part of the material uniformity, graphite in demolition of rubber material, the aging degree of metamorphism etc..
（７）零件表層材料與基體的結(jié)合強度 如電鍍層、噴涂層、堆焊層和基體金屬的結(jié)合強度，機械固定聯(lián)結(jié)件的聯(lián)結(jié)強度，軸承合金和軸承座的結(jié)合強度等。
(7) surface materials and bonding strength such as plating, coating, surfacing layer and base metal bonding strength, mechanical coupling strength fixed connecting piece, bearing alloy and bonding strength of the bearing seat.
（８）組件的配合情況 如組件的同軸度、平行度、嚙合情況與配合的嚴密性等。
(8) the coordination of components, such as the coaxiality, parallelism, engagement and tightness of the components, etc..
（９）鋁合金門窗設備零件的磨損程度 正確判斷摩擦磨損零件的磨損程度，由磨損極限確定其是否能繼續(xù)使用。
(9) the wear degree of the parts of the aluminum alloy doors and windows, the wear degree of the friction and wear parts can be correctly judged, and the wear limit can be used to determine whether it can continue to use.
（１０）密封性 如內(nèi)燃機缸體、缸蓋需進行密封試驗，檢查有無泄漏。
(10) tightness, such as cylinder block and cylinder head, should be sealed to check whether there is leakage or not.