Basically yes. Removing the 2 7mm sliders alows the caliper to be split and the pads changed, clean and lubricate the sliders, clean the running channels and measure disk thickness, minimum is 23mm on the vented disk according to my book. If it's likely the disks will be below 23mm by the time the new pads are worn down such that they need renewal new disks are also needed. Last thing you want or need is a disk breaking up.
Last set of disks I fitted to my xc70 were mintex at £65 for the pair as opposed to volvo at £85 each, front pads were also mintex. 18 months on and no problems despite towing and spirited driving.
My rear disks are also mintex at £57 for the pair rather than the £60 each volvo wanted but rear pads are volvo as I had them on the shelf having picked them up at a good price only £3 more than the mintex.
Paul.
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