cMo4 zzz A 21 040987 g I I I I A 2 V wgi IGIEV 8 t I 18 I 4 1 R kY si sg I 1 I I W 12 7 19 L I E X xy I j 22 14 I I k X 7 33 25 4 0 26 I 31 I 27 e X 28 A1 Q 3 1 I 10 I uwocssom I 1 GM04 282 1 988 1989 C BRAKE BOOSTERNACUUM DUAL DIAPHRAGM DELCO NOTE SEE PARTS CATALOG FOR POWER BOOSTER CHART IN GROUP 4 901 1 4 659 BOOT 1 2 I 2 N S SILENCER 1 2 3 A 3 N S VALVE VACUUM CHECK 1 2 4 V I 4 N S GROMMET 1 2 4 7 N S SEAL FRT HOUSING 1 2 8 N S BEARING PRIMARY P STON 1 2 9 N S HOUSING REAR 1 10 N S HOUSING FRT 1 I 11 N S SPRING RETURN 1 I 12 4 924 ROD PISTON GAGED 1 13 N S RETAINER REACTION 1 14 N S SILENCER PO WER HEAD 1 2 15 N S RETAINER DIAPHRAGM 1 2 A 1 16 N S DIAPHRAGM PRIMARY 1 2 17 N S PLATE PRIMARY SUPPORT 1 18 N S BEARING PISTON SECD 1 2 19 N S DIVIDER HOUSING 1 I 20 N S DIAPHRAGM SECD 1 2 21 N S PLATE SUPPORT SECD 1 22 N S DISC REACTION 1 2 5 I 23 N S PISTON REACTION 1 5 24 N S RETAINER BODY REACTION 1 3 5 25 N S BODY REACTION 1 5 26 N S SPRING AIR VALVE 1 3 27 N S BUMPER REACTION 1 2 3 28 N S RING RETAINER 1 2 3 29 N S FILTER 1 2 3 30 N S RETAINER 1 2 3 j 1992 GENERAL MOTORS SERVICE PARTS OPERATIONS BUICK 44C 4 000 GROUP 1 4 144 8 92