Cleaning a difficult area

If you were raised in a religious family you pro bably heard that “cleanliness is next to godliness.” If you happen to be the parent of a 4-year – old , you’ve learned that cleanliness is next to impossible. In the transmission industry, cleanliness is a necessity. One small particle can stick a valve or cause a solenoid to malfunction and turn an otherwise perfect job into a nightmare.

Torque converters have always been recognized as one of the primary catch basins for transmission contaminates. Torque converter rebuilders recognized that contaminates accumulate in the areas of little or no flow, and did their best to clean these areas. The early Ford converters that had smooth impeller exteriors had especially large areas that would trap contaminates. The torque converter rebuilders would punch holes into the area between the impeller bowl and the inner wall that retained the vanes and flush out as much of this debris as possible.

Even with all of this extra effort, many early converter rebuilders affectionately referred to this converter as the “transmission rebuilder’s nightmare.” In the early ’80s the focus on converter contaminates switched to the TCC clutches and damper assemblies. For years, presenters at seminars have warned about the necessity of cleaning the lingering particles out of these components. Recently several companies have recommended that the welded-in spring retainer be removed from the TCC piston on the front – wheel – drive Chryslers for proper cleaning (see Figure 1).

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Article No.: TCTIP-09-07
Author: Ed Lee
Total Pages: 2

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