A TX04 0588 1985 1991 G BRAKE BOOSTER VACIJUM DUALDIAPHRAGMXMORAINE NOTE JB3 BRAKE VACUUM POWERDISC DRUM GVW4600 LBS K NOTE JB5 BRAKEVACUUM POWER DISC DRUM GVW 8400 UBS NOTE JB7 BRAKE VACUU M POWER DISC DRUM GVW 8400 UBS I I NOTE SEE BOOSTER CHART INI GROUP 4 000 IN PARTS CATALOG 1 N S BOOT 1 2 2 N S SILENCER 1 4 I 5 3 N S VALVE VAC CHI 1 2 4 4 N S GROMMET CHK VLV 1 2 4 l 5 PUSH ROD ASM AIR VLV 1 5 6 N S PISTON PWR 1 3 V 7 N S SEAL FRT HOUSING 1 2 Q 8 N S BEARING PISTON 1 2 9 N S HOUSING RR 1 10 N S HOUSING FFIT 1 11 N S SPRING RETURN 1 Q 12 4 924 ROD VAC PWR BOOS PSTN 1 5469384 13 N S RETAINER REACT ON 1 14 N S SILENCER PWR HEAD 1 15 N S RETAINER D APHRAGM 1 2 16 N S VDIAPHRAGM PWR P STON 1 2 I 17 N S PLATE PRIMARY SUPT 1 18 N S BEARING SECONDARY PSTN 1 19 N S DIVIDER HOUS NG 1 20 N S DIAPHRAGM SECONDARY I 21 N S PLATE SECONDARY SUPT 1 22 N S DISC REACTION 1 2 3 23 N S PISTON REACTION 1 3 Q A 24 N S RETAINER REACTION BODY 1 3 I I 5 25 N S BODY REACT 0N 1 3 26 N s sPmNG Am VLV 1 5 27 N S BUMPER REACT 0N 1 5 5 28 N S RING RETAINING 1 5 1 29 N S FILTER 1 5 30 A N S RETAINER 1 5 A 31 N S O RING 1 5 Q 32 SEE SERVICE NOTES BELOW NOTE 1 BOOSTER PWR BRK 4 901 INCL ITEMS 1 31 18010582 G1 2 W JB5 1985 91 18011338 G3 W JB7 V 1985 87 18011338 G3 4 3Z 5 0H W JB7 1988 91 18013986 G3 7 4N W JB7 1988 91 NOTE 2 REPAIR KIT PWR BOOS 4 898 INCL ITEMS 1 3i 4 7 8 15 16 22 18007865 G1 2 W JB5 G3 4 3Z 5 7K W JB7 18014494 G1 2 3 W JB5 JB7 1988 91 A NOTE 3 PISTON KIT PWR BOOS 4 922 INCL ITEMS 6 22 25 I8014007 G1 2 W JB5 18014006 G3 W JB7 NOTE 4 VALVE KIT POWER BRAKE BOOS 4 955 INCL ITEMS 3 4 18003614 G1 2 W JB5 G3 4 3Z 5 0H W JB7 18012017 G3 7 4N W JB7 NOTE 5 PLUNGER KIT W VALVE 4 198 INCL ITEMS 2 5 24 26 31 18007868 G1 2 W JB5 G3 4 3Z 5 0H W JB7 18007859 G3 W JB7 I 1991 GENERAL MOTORS SERVICE PARTS PERATIONS LT TRUCK 52G i 1 91 I 4 s s A 4 000 GRGUP