A TX04 0917 I 1982 1990 ST BRAKE MASTERCYLINDER MORA NE JB1 JB3 J50 NOTE SEE CHART IN THE GROUP 4 000 IN THE PARTS CATALOG K 1 4 651 COVER M CYL REST R 1 I 18006073 2 4 651 DIAPHRAGM KIT M CYL RESVR 1 18006074 3 N S RESERVOIR M CYL 1 3 Q I 4 N S GROMMET M CYL RESVR 1 3 5 N S RING LOCK 1 2 1 I 6 N S PISTON PRIMARY 1 2 4 658 ROD BRK M CYL PUSH NOT SHOWN 1982 88 18011662 7 N S SEAL SECONDARY 1 2 8 N S RETAINER SEC PISTON SPRING 1 2 9 N S SEAL PRIMARY 1 2 10 4 653 PISTO N M CYL SECD 1 18006832 11 N S SPRING SECD P STON 1 12 N S BODY M CYL 1 I 13 4 651 VALVE KIT OUICK TAKE UP 1982 88 1 18011866 A NOTE 1 CYLINDER VBRK M CYL 4 650 INCL ITEMS 1 13 18013432 S1 O3 53 W JB1 1982 88 18013433 ST1 1989 90 W J50 1983 85 W JB3 1986 88 I NOTE 2 REPAIR KIT BRK M CYL 4 649 INCL ITEMS 5 9 18009374 S1 03 53 W JB1 1982 89 18010083 STI 1989 9 0 W J50 1983 85 W JB3 1986 88 NOTE 3 18014328 RESERVOIR AND GROMMET KIT BRK M CYL 4 651 INCL ITEMS 3 4 I RPO DEFINITIONS 1 I I JB1 BRAKE SYSTEM MANUAL DISC DRUM I JB3 BRAKE SYSTEM VACUUM POWER DISC DRUM l J5O BRAKE SYSTEM VACUUM POWER 1990 GENERAL MOTORS SERVICE PARTS OPERATIONS LIGHT TRUCK 52S 10 90 4 117 1 4 000 GROUP V It I W