8 8 I 1 TX04 0585 1 I 11988 M BRAKE BOOSTERNACUUM DUAL DIAPHRAGMKMORAINEKZND DES 1989 1991 M BRAKE BOOSTER VACUUM DUAL DIAP RAGMIIM RAINE 1 N S I BOOT 1 2 I 1 I 16 A Q 8 2 N S SILENCER 1 5 l 8 1 I 6 1 1 1 8 3 4 955 VALVE VACUUM CHECK 1 2 18003614 8 14 N S GROMMET CHECK VALVE 1 2 1 1 45 N S PUSH RODASM AIR VALVE 1 5 6 N S PISTON POWER 1 3 1 Q 7 N S SEAL FRONT HOUSING 1 2 1 8 N S BEARING P STON 1 2 1 I 1 9 N S HOUSING RR 1 I b 10 N S HOUSING FRONT 1 1 11 8 N S SPRING RETURN 1 1 12 4 924 ROD VACUUM POWER BQOSTER PISTON 1 8 1 5469384 13 N S RETAINER REACT ON 1 1 14 N S SILENCER POWER HEAD 1 15 N S RETAINER DIAPHRAGM 1 2 I 18 N S DIAPHRAGM POWER PISTON 1 2 1 17 N S PLATE PRIMARY SUPPORT 1 18 N S BEARING SECONDARY PISTON 1 1 19 1 N S DIVIDER HOUSING 1 I 1 20 N S DIAPHRAGM SECONDARY 1 1 21 N S PLATE SECONDARY SUPPORT 1 22 NQS DISC REACTION 1 2 V I 1 1 3 8 1 23 N S PISTON REACT ON 1 3 I 1 24 N S RETAINER REACTION BODY 1 3 5 1 1 1 1 25 N S BODY REACTION 1 3 I I 26 N S SPRING AIR VALVE I 5 1 I 1 27 N S BUMPER REACTION 1 5 28 N S RING RETAINING T1 5 I 29 N S FILTER 1 5 1 1 Z 1 V 6 1 8 30 N S RETAINER 1 5 8 381 1 N S O RING 1 5 1 32 N S SEE SERVICE KIT NOTES BELOW 1 NOTE 1 18012882 BOOSTER PWR BRK 4 901 CODE LM INCL ITEM 1 31 18015135 BOOSTER PWR BRK W JA4 4 901 INCL ITEM 1 31 15649101 BOOSTER PWR BRK W JM4 4 901 INCL ITEM 1 31 I NOTE 2 18014481 REPAIR KIT POWER BRAKE BOOSTER 4 898 INCL ITEM 1 3 4 7 8 15 16 22 NOTE 3 180158795 PISTON KIT BOOSTER POWER 4 922 INCL ITEM 6 22 25 1 I NOTE 5 18014492 VALVE KIT POWER BRAKE BOOSTER AIR 4 918 INCL ITEM 2 5 24 26 31 I NOTE 6 18012140 REPAIR KIT POWER BRAKE BOOSTER BOOT 4 659 INCL ITEM 1 2 29 8 1 1 1991 GENERAL MOTORSSERVICE PARTS OPERATIONS LT TRUCK 52M 1 91 1 4 71 1 4 000 GRO UP