The TAAT for the Saturn. It comes into your shop with a delay, slip/bang or no Reverse at all. What is the first thing you do? Get a valve body. It's always the valve body. The only thing that goes wrong with a TAAT unit is the valve body. We've heard all those lines, and more. Now, granted, if a TAAT has 60,000 miles or more on it, the odds are very good that the pressure regulator valve and bore are worn significantly. A repair or replacement valve body is no doubt in order.
但修理或更换后,您仍然存在问题。它必须是缺陷的修复,或缺陷的再制造阀体,右图不必要。让我们探索一些可能导致反向问题的其他东西。
除了阀体外,延迟最常见的原因是阀体,是一个松散的主轴螺母(图1)。当车辆热时,最有可能发生的症状,也可能表现出柔软或闪光2n齿轮档案。根据ATSG的2003年研讨会信息,松散的主轴螺母可能会导致2的泄漏n离合器电路。当螺母松动时,主轴在壳体中间来回走动。这导致1之间的小差距圣离合器和螺母,这是2的泄漏的地方n出现离合器电路。新的主轴螺母应每次修复更换,因为它有一个工厂螺纹储物柜。可以通过去除侧盖来进行螺母,这意味着该单元不必移除以更换它。坚果,这是非常重要的,应该扭转到111英尺。磅。主轴螺母的土星部件号为2100680。
另一个常见的是错误的或倒条件defective vehicle speed sensor. The input from the VSS to the PCM should always read less than 5 mph. This allows the PCM to command high line pressure, which in turn will move the servo apply valve ('93-later models only) to an open position, thus opening up the passage to allow oil to the Forward/Reverse servo piston. If the VSS is defective (reading 5 mph or above on your scan tool), the PCM will command low line pressure, thus not feeding oil to the Forward/Reverse servo piston. In turn, the slider assembly will not move, causing a no-Reverse condition.
一个发生的另一个问题,特别是当单位已被删除时,是一种错误调整的模式选择开关,我们都通常知道为手动杆定位开关。如果模式选择开关未正确调整,则可能发生无反向条件,以及驱动器丢失和/或不稳定或苛刻的转换。要调整模式选择开关,根据ATSG服务信息,将选择器放在D4位置。不要启动车辆!将欧姆仪表连接到交换机(图2.)。旋转开关直到欧姆仪表读取连续性。获得读数后,拧紧图案选择开关。
阀体仍然是反向问题的主要原因,但也可以有其他领域也需要解决。
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