1 IK 1 GMII4 zaz 1 040987 A 9 I 2 g I Y I 20 I I I Qi I K I 2 l R I VI U I 1 Q 0 1 1 x 6 2 xx Q IA X 8 Q 5 1 V KVQ 1 v 17 I I I N N W 119 I2 Rx 4 J 16 13 AI I I 22 y J I 14 Q I I 5 I is I I TY 1 33 O 25 26 31 I 27 1 28 32 Q 3 x 12 2 1 I 39 Jl I 11 Io 1 DM7029E001 I 1 GMO4 282 1988 1989 H BRAKE BOOSTER VACUUM DUAL DIAPHRAGM DELCO I NOTE SEE PARTS CATALOG FOR POWER BOOSTER CHART IN GFIOUP 4 901 9 1 4 659 BOOT 1 2I A 2 N S SILENCER 1 2 3 3 N S VALVE VACUUM CHECI 1 2 4 4 N S GROMMET 1 22 4 7 N S SEAL FRT HOU ING 1 2 8 N S BEARING PRIMARY P STON 1 2 9 N S HOUSING REARL 1 10 N S HOUSING FRT 1 I 11 N S SPRING RETURlN 1 12 4 924 ROD PISTON GAGED 1 1 V 13 N S RETAINER REACT ON 1 14 N S SILENCER POWER I IEAD 1 2 15 N s RETAINER D AI I IRAGM 1 2 1 16 N s DIAPHRAGM P RIMARY 1 2 17 N s PLATE PR MARY suPPORT 1 18 N S BEARING PISTON SECD 1 2 19 N S DlVIDER HOUSING 1 I 20 N S DIAPHRAGM SECD 1 2 21 N S PLATE SUPPORTSECD 1 22 N S DISC REACTIO N 1 2 5 23 N S PISTON REACTION 1 5 24 N S RETAINER BODY REACTION 1 3 5 I 25 N S BODY REACT ON 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 2 30 N S RETAINER 1 2 3 1992 GENERAL MOTORS SERVICE PARTS O1PERATIONS BUICK 44H t l 4 92 4 127 4 000 GROUP