GM04 262 0 2 040987 g I V 20 0 0 1 1 o 1 I 2 9 1 2 1 0 2 0 0 8 1 E 18 K 0 1 K 0 0 7 1 1 u N 19111 19 0 S1 Q 0 0 16 0 PQ A y 13 y 1 Y 0 22 W J 0 I 14 0 Q 0 0 0 1 1 I 1 6 0 1 1 5 0 I K 24 0 0 1 0 0 33 25 Q 26 4 I 31 1 I X 28 I 1 1 r 32 I Q I b Q 4 3 6 I 0 i 1 1 29 6 0 0 V 0 0 0 0 10 11 DM7029E001 0 GM04 262 1988 89 B BRAKE BOOSTER VACUUM DUAL DlAPHRAGM MORAINE 1 BOOT 1 1 2 4 659 1 8 BEARING Piston Secd 1 2 L N s 2 SILENCER 1 2 3 N s 19 1v1 ER 1 166611191 1 N s 3 VALVE Vacuum Check 1 2 4 N S 20 DIAPHRAGM Secd 1 2 Y N S 4 GROMMET 1 2 4 N S 21 PLATE Support Secd 1 N S 7 SEAL Frt Housing 1 2 0 N S I 22 DISC Reaction 1 2 5 N S 8 BEARING Primary Piston 1 2 N S 23 PISTON Reaction 1 5 N S 9 HOUSING Rear 1 N s 24 RETAINER Body FIeaction 1 3 5 N s 6 10 HOUSING Frt 1 1 N s 25 Bopv Roaozaonv 1 5 N s 11 SPRING Return 1 N S 26 SPRING Air VaIve 1 3 N S 12 ROD Piston Gaged 1 4 924 27 BUMPER Reaction 1 2 3 N S 13 RETAINER Reaction 1 N S 28 RING Retainer 1 2 3 N S 14 SILENCER Power 1 16661 1 2 N s 29 FILTER 1 2 3 N s 15 RETAINER Diaphragm 1 2 N s 30 RETAINER 1 1 2 3 N s 16 1AP1 1RAG1v1 Primary 1 2 N s 31 O RING 1 2 3 N s 17 PLATE Primary Support 1 N S 32 ROD ASM Air VaIv6 1 3 N S 33 PISTON Power 1 5 N S See CHART in Group for usage NOTE 1 Group 4 901 Service POWER BOOSTER Inc s 1 thru 33 NOTE 2 Group 4 898 REPAIR KIT Pwr Booster Inc s 1 thru 8 14 15 16 18 20 22 27 28 29 30 NOTE 3 Group 4 9 18 VALVE KIT Air lncls 2 24 26 thru 32 NOTE 4 Group 4 955 VALVE K T W Grommet lncls 3 4 NOTE 5 Group 4 922 PISTON KIT Inc s 22 thru 25 33 x 1990 GENERAL 111010116 SERVICE PARTS OPERAT ONSePONTIAC 22W ii 0 4 000 GRGUP I 4 150 I 6 90