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一辆94款通用鲁米娜多用途乘用车,采用3.1L单点喷射发动机和3T40型液力自动变速器。该车自动变速器总成在其大修完工后路试的途中,突然出现异响,且1档升2档有打滑的现象,随之该车便不能行驶。分解自动变速器后发现:六个单向阀的钢珠少装了一个,装错位置一个,前进档离合器磨损,离合器支架损坏;直接档离合器活塞底端磨损了4mm,并向两边翻出倒角;由于金属屑较多,致使油泵转子磨损,厚度低于标准值;油泵转子两端的主阀体和辅助阀体被磨出很深的沟
One 94 GM Lumina multipurpose passenger car with 3.1L single point injection engine and 3T40 hydraulic automatic transmission. The car automatic transmission assembly in its overhaul completed road test on the way, a sudden abnormal sound, and a gear up 2 files slippery phenomenon, followed by the car will not be able to drive. Disassemble the automatic transmission and found: six one-way valve with less installed a ball, a wrong position, the forward clutch wear and tear, damage to the clutch bracket; direct clutch piston bottom wear 4mm, and turn out chamfered to both sides; As more metal shavings, causing the pump rotor wear, the thickness is lower than the standard value; the main rotor and auxiliary valve body at both ends of the rotor was deep groove