I am beginning to suspect my rear axle bearings are going. Not sure. I hear a sound "wo wo wo wo" in sync with rotation speed. I guess it could be tires. Just in case, I called the dealer to ask about bearing replacement. The service manager said that they normally replace the entire rear end instead of replacing the axle and carrier bearings. Is there something I'm missing? This doesn't seem like it should be a difficult job.

Just for reference, the most complicated work I've done is replacing the rotors and front wheel bearings (hand packed!) and replacing the front and rear shocks. Other than that...nothing more complicated than changing oil or flushing coolant.

The truck is a 2002 F150 2WD open differential.

Thoughts?

-Kokomodo

 

Rear axle rebuild is not for a beginner.. Takes time and patience.. You have to get the bearing clearance right, back lash right, bearing crunch right, and have a variety of tools. There is always a first time, but a little more experience might be in order...... Dealer can probably buy a good used unit and install cheaper due to the amount of labor involved in a rebuild.

 

Bearings normally dont make a wo wo wo sound, they are a constant roar that increases with speed. I would definitely check the tires.

 

According to youtube, rear axle seal and bearing are pulled out like any other seal/bearing, and hammered in with wood block all the way in. Is this incorrect? I have never done this before. Any advice is much appreciated.

 

well you can find about anything on youtube... wood drivers can leave splinters and sawdust inside... better to use brass or special tools for drivers....Driving is always a last resort.. I press the bearings onto the bevel shaft with a hydraulic press... and yes, the bottom out. ... Pinion bearing races in the case are different, you cant use a press , so a brass driver is needed.

 

not saying that some shortcuts wont work, but the following is a BETTER way to rebuild

 

If it's not something you've ever had experience with, I'd definitely not recommend trying it without a lot of help