Common questions

When to replace the breather on a dsg7 transmission?

When to replace the breather on a dsg7 transmission?

Transmission fluid leak through the breather cap on the DSG7 transmission In case if the cleaning procedure does not bring positive results (oil still leaks) then it is likely that the breather is damaged and it must be replaced. Drivers should pay particular attention to the rear axle breather.

Why do you need a transfer case breather?

Transfer case breather Front and rear axles also operate with the help of oil, and their internal space must be open to the atmosphere in order to avoid pressure increase inside the unit. For this purpose, the design of front and rear axles includes axle breathers.

Can a gearbox breather fail in a passenger car?

Such vehicles often operate under harsh conditions, and as a result, the gearbox breather or axle breather can be contaminated or fail much faster (especially axle breathers) than in passenger cars. If the gearbox breather gets out of order, it may lead to serious failures of the whole gearbox unit.

When do you need to replace an axle breather?

If the breather becomes contaminated or stops operating properly, it will lead to increased pressure and as a result, oil leakages. In this case, you should start with cleaning. After that, it is recommended to drive 20-30 kilometers. If it doesn’t help, then you have to replace the axle breather.

What to do if your transmission breather is leaking?

There should be no measurable air flow from the transmission breather. Listen for the air leak with the transmission shifted to both low and high range. Leak is only in low range. Remove range cylinder and inspect for damaged range yoke bar, yoke bar O-ring, or range cylinder.

What to do when your transmission line exhausts?

WARNING: Use care when removing air lines or checking for air flow from disconnected lines. High-pressure air may exhaust suddenly. Wear safety glasses. Exhaust all air pressure from the system before removing air filter/regulator or combination cylinder cover.

Where is the transfer case vent hose located?

While poking around under the truck today I noticed a mystery hose on top of the transfer case. I traced it back and it goes all the way up to the front of the transmission where it splits into the transmission and then goes up to a vent cap above the bell housing. So is this just a transmission overflow puke tube?

Where does air come from in a Fuller transmission?

Confirm that air is leaking from the exhaust port on the slave valve and not a fitting or air line. Air is leaking from fitting or air line. Repair or replace fitting or air line. Air is definitely leaking from slave valve exhaust port. Move range selector down to select low range. Air is flowing from high range supply port on range cylinder.

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Ruth Doyle