GM04 255 u 1982 87 J BRAKE BOOSTERNACUUM DUAL DIAPHRAGM MORAINE u 1 BOOT 1 2 7 L N S 2 SILENCER 1 2 4 I T N S 3 VALVE Vacuum Cheok 1 2 3 N S 4 GROMMET 1 2 3 N S 5 SWITCH Vacuum Some ModeIs 1 2 5 N S P 6 GROMMET 1 2 5 g N S 7 SEAL Frt Housing 1 2 A N S 8 BEARING Prim Piston 1 2 Q N S 9 HOUSING Rr 1 g I N S I 10 HOUSING Frt 1 i N S 1 1 SPRING Return 1 N S A 12 ROD Vac Pwr Boos Piston 1 4 924 I 13 RETAINER Reaction 1 I N S 14 SILENCER Power Head 1 2 4 L N S 15 RETAINER Diaphragm 1 2 I N S 16 DIAPHRAGM Prim 1 2 N S 17 PLATE Prim Support 1 N S 18 BEARING Piston Secd 1 2 Q N S 19 DIVIDER Housing 1 u N S 2 20 DIAPHRAGM Secd 1 2 N S S 21 PLATE Support Secd 1 N S 22 DISC REACTION 1 2 6 N S 9 23 PISTON Reaction 1 6 L N S 24 RETAINER Body Reaction 1 4 6 I N S 25 BODY REACTION 1 6 N 5 I 26 SPRING Air VaIve 1 4 N S 27 BUMPER Reaction 1 2 4 N S 28 RING Retaining 1 2 4 N S 29 FILTER 1 2 4 N S 30 RETAINER 1 4 N S 31 A O RING 1 4 A N S 32 ROD ASM Air Valve Push 1 4 N S 33 PISTON Power 1 6 N S See CHART in group for usage A I NOTE 1 SERVICE PWR BOOSTER Group 4 901 lncls 1 Thru 33 NOTE 2 PWR BOOS REPAIR KIT Group 4 898 lncls 1 Thru 8 14 15 16 18 20 22 27 2 8 29 Lu NOTE 3 VALVE GROMMET Group 4 955 lncls 3 4 NOTE 4 AIR VALVE PLUNGER VLV Group 4 918 lncls 2 24 26 Thru 32 NOTE 5 VACUUM SWITCH KIT Group 4 918 lncls 5 6 S A NOTE 6 PISTON KIT Group 4 922 lncls 22 23 24 25 33 NOTE 7 BOOT REPAIR KIT Group 4 940 lncls 1 2 24 g 1989 GENERAL MOTORS SERVICE PARTS OPERATIONS 0LDSMOBILE 32J 4 89 4 61 4 000 G ROUP