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New rear pads, what I learned. 1997 965 189K miles 900 1997

With the good advice of other BB folks, I did the job last Thursday.

The scissor-type jack from a 240 got the car high enough to remove the wheel. As always, I used a large chock on the opposite front wheel when jacking up a car. I could not quicklu figure out where to put a jack stand, so I did the job with exceeding care. No problem was encountered, even during torque-ing the bolt on the guide pin to spec.

Lesson: Without the wheel, the rear axle on my IRS-equiped car gradually dropped down. This I noticed when attempting to refit the wheel. The axle had dropped about an inch! Fortunately it was easy to raise the car 15 more cranks of the jack.

Then I followed the steps in the Volvo Service Manual. It was amazingly easy, moreso that a 240! The manual calls for a 15mm "spanner" which, I learned, is an open-end wrench. Fortunately my small double-ended Crescent wrench sufficed.

Next lesson: The pads removed were non-Volvo. On comparing them with the new Volvo pads, I found that the brake material on the Volvo pads was of equal height, but 3/8-inch longer. Hmmm, 3.375 inches compared to 3.0 inches means a significantly (12.5%) larger braking area.

The other lesson, more of a trick than a lesson, was in the application of anti-sieze to the wheel studs. On the second wheel, I applied the anti-sieze to the studs prior to fitting the wheel. Much easier to do, and most of it was in place after I got the wheel in place.

After all, it was a simple job. Next are the front pads, since wer are still hearing a noise when braking, sometimes. Looks like an easy job, too.


Thanks for "listening"

Bob

:>)


PS: The Volvo pads were P/N 31261186. Borton Volvo charged $30.33, plus shipping.








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    New rear pads, what I learned. 1997 965 189K miles 900 1998

    Just did the rears on the wifes Cross Country. Easy, but parking brake shoes need it now. Been anti-siezing lugs for many years now as well. No problems yet.








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    New rear pads, what I learned. 1997 965 189K miles 900 1997

    You should not apply anti sieze or any lubricant to the wheel studs.. Once a stud is lubricated it will not reach the same torque value as a dry stud, and could come loose. A friend of mine lost a trailer wheel on the highway by doing this. I would clean off the stud, and only apply anti seize where the wheel mates with the disk to prevent the two from sticking together, or the rotor to the hub.
    --
    1998 Volvo S90 SE (Black Cherry) 264,000+km








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      New rear pads, what about using anti-seize on wheel studs.... 1997 965 189K miles 900 1997

      Your point is accurate, in that when using anti-seize the torque specs are invalidated. E.g. while the torque wrench reads 83Nm the actual holding torque will be less. Rather than pulling the wheels and cleaning the studs, I will re-torque the wheel studs after some 5K to 10K miles, without adding any anti-sieze.

      I learned the practice from Nils, the certified Volvo tech who was my go-to guy from 1977 to a few years back when he retired. None of the wheel lugs I have used anti-sieze on for 15 to 20 years of 240's has come loose, maybe I should charge that off to luck.

      I know there is a "fudge factor" when using anti-sieze, and I use it when torquing spark plugs following advice from the BB many years ago. The torque wrench reading must be increased by a certain amount or percentage. I checked the details (they're written on the inside of the lid of the box holding my torque wrench) and they say to torque to 15 lb-ft unless using anti-sieze and then go to 18 lb-ft. That looks like a 20% increase. (Numbers are for a 240.)

      Thanks for the heads-up, I had forgotten.

      Bob

      :>)







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