A I I GMM zzz V I 1 2 040987 I N I KK I I 2 0 0 0 2 I 0 8 I tt 18 Q 1 0 I v A I aw I W I 12 I I I 19 1 M 16 N j Q I 13 I 0 I 22 y J I 14 0 V JI 25 33 L 26 4 31 N 21 I Q I 0 X 28 I Q E 1 3 5g 0 M7 2oa m GM04 282 I 1988 1989 N BRAKE BOOSTER VACUUM DUAL DIAPHRAGM MORA NE NOTE SEE CHART IN GROUP FOR USAGE V 1 4 609 BOOT 1 2 L 2 N S SILENCER 1 2 3 Q I 3 N S VALVE VACUUM CHECK 1 2 4 4 N S GROMMET 1 2 4 0 07 N S SEAL FRT HOUSING 1 2 0 0 8 N S BEARING PRIMARY PISTON 1 2 9 N S HOUSING REAR 1 Q I 10 N S HOUSING FRT 1 0 11 N S SPRING RETURN 1 0 12 4 924 ROD PISTON GAGED 1 0 13 N S RETAINER REACTION 1 I I 0 0 14 N S SILENCER POWER HEAD 1 2 15 N S RETAINER DIAPHRAGM 1 2 I T 16 N S DIAPHRAGM PR MARY 1 2 I 17 N S PLATE PRIMARY SU PPORT 1 18 N S BEARING PISTON SECD 1 2 19 N S DIVIDER HOUS NG 1 I 0 20 N S DIAPHRAGM SECD 1 2 21 N S PLATE SUPPORT SECD 1 I 22 N S DISC REACTION 1 2 5 23 N S PISTON REACTION 1 5 0 24 N S RETAINER BODY REACT ON 1 3 5 0 Q 4 25 N S BODY REACT ON 1 5 0 26 N S SPRING AIR VALVE 1 3 L 0 0 27 N S BUMPER REACTION 1 2 3 0 28 N S RING RETAINER 1 2 3 1 I 29 N S FILTER 1 2 3 0 30 VN S RETAINER 1 2 3 V 2 I991 GENERAL MOTORS SERVICE PARTS OPERATIONS PONTIAC 22N Y 4 000 GROUP 4 72 2 91