I I T4B 54 4 1990 1991 LM BRAKEBOOSTER BENDIX W JM4 NOTE OUANTITY S ONE PER ASSEMBLY USLESS OTHERWISE SPECIFIED NOTE JM4 S PIMR DISC FRT RR DRUM BRAKES WITH ALL WHEELS HAVING ANTI LOCK BRAKES 1 N S ACCUMULATOR INCLSITEM 2 2 N S 0 RING ACCUMULATOR PART OF SEAL KIT LISTED BELOW 3 N S RING SPOOL VALVE PLUG RET PART OF SERV BOOSTER J 4 N S PLUG SPOOL VALVE PART OF SERV BOOSTER 5 N S O RING SPOOL VLV PLUG PART OF SEAL KIT SERV BOOSTER 2 6 N S SPRING SPOOL VALVE PARTOF SERV BOOSTER L 7 N S HOUSING PART OF SERV BOOSTER 8 4 815 SCREW W LK WA HSG TO CVR 471740 9 4 810 SEAL BOOS RETURN PIPE FTG 15547030 A 10 I N S VALVE ACCUMULATOR 11 4 845 FITTING RETURN LINE V 360855 12 N S VALVE SPOOL PART OF SERV BOOSTER Q A I 13 4 810 SEAL INPUT ROD 3 A 15583086 14 N S SEAL HSG PART OF SEAI KIT SERV BOOSTER 15 N S COVER BOOS HSG L 16 4 805 BRACKET BOOS MTG A 15634081 17 4 805 NUT MTG BRKT 15594130 I 8 934 RETAINING RING MOUNT BEHIND NUT NOT SHOWN Q 9413403 18 N S BOOT NOT REOD FOR THIS APPLICATION I 19 N S GROMMET PEDAL ROD PART OF SERV BOOSTER I 20 4 N S ROD PEDAL PART OF SERV BOOSTER 21 4 810 PIN INPUT PSTN 345667 A Y 22 N S ROD W PSTN BOOS INPUT A 23 N S SEAL PSTN PART OF SEAL KIT SERV BOOSTER 24 4 805 STUD BOOS TO M CYL MT 14055065 25 4 659 RETAINER OUTPUT P USH ROD J A 345673 26 4 810 SPRING PSTN RTN 471736 27 N S RETAINER PSTN RTN SPR PART OF SERV BOOSTER z A I 28 4 659 BAFFLE OUTPUT ROD SPR 3608597 29 4 658 ROD OUTPUT PUSH L 465229 I 30 A N S SEE SERVICE KITS BELOW SERVICE KITS V I KIT 1 4 810 VALVE KIT ACCULUMATOR 465227 2 4 805 BOOSTER KIT REPA R 15635042 3 4 820 ACCULUMAxTOR KIT PWR BOOSTER 16 12590 l I 4 4 805 1 BOOSTER PROD SERVICE INCLS PUSH ROD JM4 15649101 NOTE 2 MUST ALSO ORDER PEDAL ROD WHEN ORDERING SERVICE PWR BOOSTER NOTE 3 THIS SEAL CAN ONLY BE USED REPAIR ASSEMBLIES THAT HAVE BEEN PREVIOUSLY REPAIRED I USING THE NONSTAKED REPAIR KITS RPO DEFINITIONS JM4 BRAKE SYSTEM POWER FRONT DISC REAR DRUM ANTI LOCK CAST IRON 1991 GENERAL MOTORS SERVICE PARTS OPERATIONS LT TRUCK 52M 1 91 4 79 4 000 GROUP