1 GM04 282 21 040987 0 g s I 1 I Q I L 0 0 aq I 0 2 I 0 N3 1 0 0 0 r Ig 0 I 18 RX 0 0 I t A 0 0 17 I g 0 1 I I II Q2 1g 12 0 0 2 0 1 16 0 13 V A 0 W I 9 0 22 y J I 14 0 5 5 00 I 0 23 0 X 0 2 I 33 25 0 Q 26 31 JS NK 0 32 I Q E 0 3 0 Q 0 I 2 X I V 0 10 0 I 4 0 0 DM7029Ew1 I I I GM04 282 1988 1989 B BRAKE BOOSTERNACUUM DUAL DIAPHRAGM MORAlNE NOTE SEE PARTS CATALOG FOR POWER BOOSTER CHART IN GROUP 4 901 0 0 1 4 659 BOOT 1 2 0 2 N S SILENCER 1 2 3 1 0 3 N S VALVE VACUUM CHECK 1 2 4 I 1 4 N S GROMMET 1 2 4 7 N S SEAL FRT HOUSING 1 2 8 N S BEARING PRIMARY PISTON 1 2 L A 9 N S HOUSING REAR 1 0 10 N S HOUSING FRT 1 11 N S SPRING RETURN 1 I 12 4 924 ROD PISTON GAGED 1 I 13 N S RETAINER REACTION 1 I 0 0 14 N S SILENCER POWER HEAD 1 2 15 N S RETAINER DIAPHRAGM 1 2 16 N S DIAPHRAGM PRIMARY 1 2 17 N S PLATE PRIMARY SUPPORT 1 18 N S BEARING PISTON SECD 1 2 1 19 N S DIVIDER HOUSlNG 1 20 N S DIAPHRAGM SECD 1 2 0 21 N S PLATE SUPPORT SECD 1 22 N S DISC REACTION 1 2 5 I 0 I I I 23 N S PISTON REACTION 1 5 24 N S RETAINER BODY REACTION 1 3 5 4 25 N S BODY REAC IZlON 1 5 I 0 26 N S SPRING AIR VALVE 1 3 27 N S BUMPER REACTION 1 2 3 V 28 N S RING RETAINER 1 2 3 0 29 N S FILTER 1 2 3 30 N S RETAINER 1 2 3 y E 1991 GENERAL MOTORS SERVICE PARTS OPERATIONS BUICK 44W t 4 000 GROUP 4 122 I I 6 91