manufacturing processes

Leaking rear axles: a design for Six Sigma project at General Motors

The issue for the project is that some of the rear axles for General Motors GMT800 and GMT900 are found to be leaking. Most of the leaks are spotted already at the paint facility Paint Tech International (PTI), but some make it all the way to the customer before being spotted. The leaks are normally discovered as a wet spot around the vent tube area on the differential, or in more severe cases as a puddle of lube around the pinion flange.

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