1 I 6 4 A GM04 283 090292 5 1 R I 18 1 N 17 za I1 I 2 xt l 16 g 3 1 I 2 9 999 1 2 22 I1 14 15 wJ5 I 11 h 13 2 I H 9 1 2 gg 10 X I 19 I 11 I 21 206 I 47 1 22 5 2 1 Q 23 3 2 30 25T 7 5 12 L X 1 Q 29 ZC 8 I I 27 I Jj 26 5 1 DM6101E25O IEE GM04 283 1988 1989 W BRAKE BOOSTER VACUL 1 I AL DIAPHRAGM W CAM LOCK HSG l NOTE SEE PARTS CATALOG FOR POWER BOOSTER CHART GROUP 4 650 V 1 4 659 BOOT 1 2 2 N S VALVE VACUUM CHECK 1 2 4 3 N S GROMMET 1 2 3 4 N S SEAL FRT HOUSlNG 1 2 5 N S BEARING PRIM PISTON 1 2 6 N S HOUSING RR 1 7 N S HOUSING FRT 1 S 4 IiS gIgIgNG RgTUIgNg1 4 Pl T N A ED 1 10 N S RETAINER REACTlON 1 11 1 N S SILENCER POWER HEAD 1 2 12 N S RETAINER DIAPHRAGM 1 2 13 N S DIAPHRAGM PRIMARY 1 2 14 N S PLATE PRIMARY SUPT 1 2 15 N S BEARING SECONDARY PISTON 1 2 16 N S DIVIDER HOUSING 1 17 2 N S DIAPHRAGM SECONDARY 1 2 Q 1 18 N S PLATE SECONDARY SUPT 1 V 19 N S DISC REACTlON 1 2 5 20 N S PISTON REACTION 1 5 21 N S RETAINER REACTION BODY 1 3 5 22 N S BODY REACTION 1 5 23 N S SPRING AIR VALVE 1 3 1 1993 GENERAL MOTORS SERVICE PARTS OPERATIONS BUICK 45W 2 93 4 109 4 000 GROUP