Rear Wheel Bearing Replacement
Noisy Rear Wheel Bearing Removal And Replacement Volvo 850, S70, V70, XC70 and C70
I have a 96 854 with the 20v engine that has just over 100,600 miles. For the past 10k miles I have had a rattle and a roaring that has been getting louder on the passenger rear side of the car. I have also had pre-mature wearing on the inside of the rear tire that has caused the early replacement of the tires on that side of the car. The roaring would disappear if I were turning to the left (long curves would quiet it the most).
The rear wheel bearing comes as an assembly. I priced the bearing assembly at my local dealer and they wanted about $200 (plus shipping) for the part and it would take 3 to 5 days to get it in. I started checking parts houses and the only place that could get it was NAPA for $106 (taxes and shipping included) and it would be in tomorrow. Here are the steps for replacing the wheel bearing:
Wheel Bearing Procedure
- Remove wheel (3/4 inch lug on 4-way) and the wheel alignment pin from brake disk (10 mm deep well socket)
- Attach brake bleeder drain tube and open bleeder valve (9mm wrench) to compress pads – I also noticed that I needed new pads
- Remove brake caliper (two 13mm bolts on the backside of the caliper) and hang on the rear suspension spring
- Pry off the axel bolt dust cover (I used a chisel and a mallet to get it started and a large flat tip screw driver to prey it off)
- Remove axel bolt – The Haynes manual incorrectly states that this will be a 22 or 24 mm nut depending on year model, it is a 36mm nut.
- Problem: My metric half-inch drive sockets only go to 26 mm, as that is the largest Craftsman socket for half-inch drive. The local Sears does not have any metric larger than 26 mm (neither does NAPA, Advance Auto, PEP Boys, or Ace Auto). The closest standard size is 1 & 7/16, and it will work.
- Pull bearing assembly off axle
- Clean axel and surrounding area with brake cleaner
- Install new bearing assembly
- Grease the threads on the 36mm nut and reinstall (Haynes recommends 88 ft/lbs and then 30 degrees further for the 24mm nut – I used a pointer style torque wrench for removal and it took 110 ft/lbs to remove the nut. I tightened to 88 ft/lbs and then was able to tighten the nut about 15 degrees further to 175 ft/lbs. I could not move the nut any further, I will update if this fails some day)
- Install axel bolt dust cover
- Install brake caliper with 2 bolts (13mm)
- Install wheel
After I installed the brake calipoI went ahead and performed a rear brake job. Once everything was back together I took it for a test drive. It is now quiet and my wife thinks it rides smoother. See the Volvo Forum comments on this wheel bearing replacement tutorial here.