Preventing dirt, water, and road debris from entering the sensitive internal gears of the transmission. Common Issues with Transmission Tubes
The point where the tube enters the transmission housing is sealed with a rubber grommet or O-ring. Over time, heat causes this rubber to harden and shrink, resulting in a persistent leak at the base of the transmission. 3. Vibration Cracking tranny tubes
In older vehicles, the exterior of the tube can rust through. This creates "pinhole" leaks. While fluid doesn't under high pressure in the tube, it can splash out during operation, leading to a low fluid condition. 2. Seal Failure Preventing dirt, water, and road debris from entering
The transmission tube is a hollow metal pipe that connects the transmission casing to an accessible point in the engine bay. Its primary functions include: While fluid doesn't under high pressure in the
Ensure the mounting bolt is tight; a loose tube will eventually leak.
Before pulling the dipstick, wipe the top of the tube to ensure no grit falls inside.