Had some sound from the propeller shaft and as the rear wheel bearings just been replaced I thought it would be the center bearing. Removed the propeller shaft and checked the center bearing (as per Jasons video). Found the bearing to be defective and needed to be replaced.
First part was to divide the propeller shaft at the center bearing support. The center bearing support nut was the first obstacle.
Jason suggested to use a adjustable wrench and turn the nut anti clockwise. I was not comfortable with the adjustable wrench so decided to fabricate my own tool. Found a 20 dollar combination wrench and started cutting. Note that the size of nut is approximately 46 mm (if you need the size in inch bring out your own calculator!)
With the "homemade" wrench it was very easy to remove the nut and divide the shaft.
Marked all parts of the shaft for easy alignment when assembling (but it was not necessary as I will show at the end of this thread).
The shaft being pulled apart.
Using a sledgehammer and carefully tapping on the slinger removing the center bearing support and bracket. It didn't take much force at all, but you might have to use rust penetrating oil if difficult. Its a bit tricky to take pictures, but I guess you see whats going on...
Here is the shaft with the bearing assembly removed.
Slinger, center bearing support (with bearing still inside) and lock retainer. Note the snap ring is holding the bearing. (Sorry about my ugly sandals).
Snap ring being removed.
Gently tapping on the bearing, removing it from the support. Rust penetrating oil would of course help as well.
Here are all parts.
Bought a new bearing. OEM 904778 and suitable replacement part is SKF 6908-VAL. Size of the bearing is 62x40x15 mm if you buy from another manufacturer.
Pressed in the new bearing using a vise and a 46 mm socket. (44 or 45 mm sockets, if exist, would have been a better choice).
Here its in correct position with fitted snap ring and slinger ready for install onto the shaft.
Everything properly greased and fitted together.
Now it was just to reinstall the the shaft on the car again. Important is to cover the front slip yoke as that is going into the gear box and you don't want any foreign material to enter it.
It was actually very easy to reinstall the shaft. I was worried about finding the two holes for the center bearing support-to-frame bolts. But it was very easy and the installation was a lot easier then the dismantling. Also keep in mind that when you remove the front slip yoke from the gear box, oil will pour out. Make sure you have a drip tray ready. I measured the lost oil when all was done and found the quantity to be around 2 liter. So needed to refill that before starting the car. If you happen to have an extra front slip yoke lying about, you can of course use that to stop the loss of oil!
After test driving the car the sound is a lot better. But I still have some clicking sound from the constant velocity universal joints. Mine were not so good, but after spraying some rust penetrating oil and then grease they are a lot better. Still have ordered two new set of Rockford 403-01 CV Driveshaft repair-kit and five set of MOOG universal joints plus a universal joint removal tool (I don't like to use the sledgehammer and the vice). I am planning to do this job in the winter. But that will be another thread...
If you recall, at the beginning of this thread I said the markings I did on the shaft was unnecessary. Reason is that the shaft can only be assembled one way. A spline is missing inside the shaft:
And on the splined ball stud yoke a metal clip is fastened. Don't remove this clip.
The yoke and the spline can only fit one way so markings was not necessary, but better to be safe than sorry...
Anders, good photos and write up! Yes, be safe and mark the drive shaft orientation. I have seen that clip missing on some drive shafts I've worked on. With the clip missing, you can assemble the two halves out of phase or worse. Always mark the shaft, even at the differential flange before removing. Good Job replacing the bearing! I like your tool to remove the nut securing the bearing, I'll have to find one of those for my tool box.
Don't forget to wear the same shoes as Anders..... the magic is in the shoes. LOL.
Sorry Anders, but you bought it up first. PMSL (You've done a good job on the shaft too)
I spend a lot of time investigating before doing anything. All jobs have been done by members of this site before I attempt it. So nothing is new. But what I miss from others posts are pictures and reference to parts. Especially new parts that could be a good replacement.
My wish is that each and every job is written about and posted with pictures, so we can learn from each others success and mistakes.
I also upload images as it makes following the post a lot easier than using the "Upload Files". Having the pictures visible right away instead of clicking on each link. Suggest you guys use this function: