A transmission fluid exchanger works by extracting old transmission fluid and replacing it with new fluid, typically done through the transmission dipstick tube for a simple exchange.
Here's a more detailed breakdown of the process:
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Access: The exchanger connects to the transmission via the dipstick tube. This is a convenient access point that avoids the need to disconnect transmission lines in many cases.
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Extraction: The machine uses a pump to extract the old, used transmission fluid from the transmission.
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Replacement: Simultaneously (or in close succession), the exchanger pumps new, clean transmission fluid back into the transmission.
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Balance: The key is to maintain a balanced flow, ensuring that the volume of fluid extracted is roughly equal to the volume of fluid added. This prevents overfilling or underfilling the transmission.
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Observation: Some exchangers have viewing windows or measurement tools to monitor the color and condition of the old and new fluids. This allows a technician to determine when the exchange is complete (i.e., when the fluid coming out looks similar to the fluid going in).
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Duration: The process is generally quite fast. A typical automatic transmission fluid exchange can often be completed in about 10 minutes due to the high flow rate of the exchanger.
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Additional Use: The unit can also be utilized to simply drain the transmission fluid completely. This is often done before performing services that require access to the transmission pan and filter.
In summary, a transmission fluid exchanger provides a relatively quick and easy method for exchanging the fluid in an automatic transmission, primarily utilizing the dipstick tube for access and maintaining a balanced flow of old and new fluid.
