01.8 Remachining basic bore for valve seat rings 352/352 A 7 Calculate adjustment "2": "2" = Basic bore lie" or "d" + pilot dia. "1" 2 See table 1.2/4 for "c" and "d" 8 Release coupling nut, set micrometer to "2", slightly lift cutter, attach micrometer to pilot, and exactly adjust tool to size "2" using quick·action ad· juster (1). Tighten coupling nut (2). Note: You are advised to reduce tool setting by 0.1 mm in diameter for first cut. 9 Turn horizontal stop screw (1) fu IIy home a· gainst body and tighten screw (2) beneath, so pre· venting stop screw from turning. 10 Turn hand crank and simultaneously hold upper knurled collar for vertical feed.
Cut bore for valve seat ring until adjusting ring (1) contacts steady bea· ring (2). Note: Keep adjusting tool until adjustment calculated in job No. 7 is reached. Then turn once without chip feed to obtain peak·to·valley height of max. 0.006 mm. 6.5/2