What happens when rear output shaft seal leaks?
If the rear output shaft seal leaks, not only will the fluid leave a mess on the undercarriage and ground, but the transmission may be damaged due to low fluid. Low transmission fluid from a leaking rear output shaft seal can cause transmission shifting problems.
Where does the oil seal go on a transmission shaft?
This shaft transfers power from the engine to the gears in the transmission and will have an oil seal around it. The output shaft similarly will have a seal that goes around the shaft, a slip yoke or the CV axles depending on the type of vehicle.
How do you change the seal on a shift shaft?
Be VERY careful while putting the seal over the flats on the shaft. If you rip the seal, you get to do it again. Place the installation tool over the seal once it is on the shaft and lightly tap with a hammer until it stops. Viola!
Is the shift shaft seal on a TH400 leaking?
TH400 and TH350 GM Automatic transmissions are notorious for leaking. My transmission in Ol’ Blue leaked like the Exxon Valdez for 3 years before I finally ran across the information online on how to replace the shift shaft seal myself.
How does the oil seal move along the shaft?
The oil seal moves in an axial direction along the shaft The outer diameter of the oil seal is smaller than the internal diameter of the bore. Excess pressure is displacing the oil seal axially.
When to replace front wheel drive oil seals?
Replacing front-wheel-drive oil seals If there is a leak from the oil seals at the inner ends of front-wheel-drive shafts, the shafts must be removed and the seals renewed – a task best left to a garage. A front-wheel-drive car has oil seals on the drive shafts at the front wheels.
Can a transmission seal be replaced without removing the gearbox?
Make sure you fit the seal the right way round. The lip (or lips) always faces the oil it is sealing. Some extension oil seals have a collar which has to be tapped out, using a sharp drift. The extension housing seal can usually be replaced without removing the gearbox.
How does a dynamic seal on a transmission work?
The dynamic seal surrounds a turning shaft. The lip always faces the oil it seals in, and the garter spring provides gentle pressure. Dynamic seals also contain a thin coiled spring, called a ‘garter spring’, which holds the sealing lip in contact with the revolving shaft.
Why do you need a transfer case output shaft seal?
This is basically what makes a car a four-wheel drive. The transfer case output shaft attaches the case to the axle. The purpose of the output seal is to prevent fluid from leaking out of the transmission, where it connects to the transfer case. The seal also prevents fluid from leaking out of the front and rear output shafts to the differentials.
Is it bad to add oil to rear main seal?
Many times the mechanics’ quotes for getting a rear main seal fixed are so high that it seems a better option to drive the vehicle and just add oil regularly to keep your car running. Here’s why that’s a bad Idea. While you are driving, the leaking oil will be distributed all over the bottom of your vehicle.
Why is the rear main seal so important?
The rear main seal is the rear seal for the crankshaft in your engine. It’s a very important seal since it is so low on the engine a significant amount of oil can quickly leak from it, allowing your engine oil levels to get dangerously low before you have time to add more oil.
If the rear output shaft seal leaks, not only will the fluid leave a mess on the undercarriage and ground, but the transmission may be damaged due to low fluid. Low transmission fluid from a leaking rear output shaft seal can cause transmission shifting problems.
What does the rear main seal do in a car?
The rear main seal allows the crankshaft to exit the engine case so it can bolt to the flywheel or flex plate and transfer its energy into the transmission. The rear main seal also holds the engine oil back and keeps it inside your engine where it can keep your main bearings lubricated.
What causes oil to drip from rear main seal?
If you’ve got a rear main seal leak you will have oil dripping off either your engine oil pan or the front of your transmission called the bell housing. The problem is other leaks can cause oil to drip from this location as well. For example, a leaking oil pan gasket or even a leaking valve cover gasket…
What to do about a rear main seal leak?
If you’ve discovered a rear main seal leak in your vehicle, seal the leak today before it’s too late. Head to your local auto parts stores and pick up BlueDevil Rear Main Sealer. Simply add BlueDevil Rear Main Sealer to your vehicle’s engine oil and your rear main seal leak will be stopped as your drive your vehicle.