Replacing Your Pinion Seal
By
User:AllieCashel @timeAndDate(1277927032)
Commonly, mechanics will attribute an engine leak or a leak in your car's steerage system to a worn out pinion seal. Because they are easily worn down by the loads and forces that come along with driving your vehicle, these small but very important seals are often the cause of some cracks in your engine that can make it dangerous for you to drive. Luckily for you, this isn't something that you necessarily need to take in to the shop to get repaired. With a little bit of patience and a steady hand, replacing the pinion seal in your car takes little time, is fairly cheap and simple, and will enable you to fix your leaks and get your car back on the road all on your own. The first step to fixing the leak in your car however, is understanding what the thing is that's causing it. If you're anything like me, you probably don't understand what a pinion seal even is but this guide will hopefully help you get through understanding and changing your pinion seal as easily as possible.
What Is A Pinion Seal?
The pinion seal in your car is what fastens the the drive shaft of your car (this helps transmit power to your wheels and also controls the torque and rotation of your steering) to the differentialwhich enables your wheels to maintain the same torque but rotate at different speeds, a vital component of turning. Because both the drive shaft and the differential are constantly working while you drive, your pinion seal can get worn down pretty easily causing common fluid leaks from the seal out into the engine. Not only can this cost you a ton of money (you'll keep needing to add gear oils and power steering fluid) but it's also very dangerous for you to be driving a car with a bad pinion seal leak: it can seriously limit your ability to turn and steer your vehicle. If you notice a leak, you should replace your pinion seal as quickly as quickly as possible.
Replacing your Pinion Seal
If you're comfortable replacing your own seal but feel like you could use a little help, take a look at the following steps before you start.
* '''Step 1''': Remove the drive shaft from the differential yoke and move it out of the way.
* '''Step 2''': With a permanent marker, make marks in a horizontal line on the yoke, nut and pinion shaft to help guide your reassembly later.
* '''Step 3''': Remove the nut and the yoke. (You might need a hammer for this step).
* '''Step 4''': Your old pinion seal should now be visible, and using only your hands, pull it out (it should slide out pretty easily).
* '''Step 5''': Slide your new pinion seal into the place where the old one was. Check the surface of the yoke where the seal rides against it. If it is damaged, consider putting a repair sleeve into it to make sure everything stays tight.
* '''Step 6''': Using some non-hardening sealer, replace the other parts and line them up with your marks from earlier.
* '''Step 7''': Reinstall the nut and tighten it until all of your marks line up in a straight line.
* '''Step 8''': Refill your differential, and you're done!
Just a note: Before you buy your new pinion seal, check and see if your car company makes their own or that the generic one you buy is compatible with your car!
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