57 PASS w T G SEAL front pump 21 O D 3737779 1 1 35 57 PASS w T G SEAL rear pump body 41 I D 3732282 1 10 57 PASS w T G SEAL UNIT front pump consists of 3 seals 3739800 1 45 50 52 PASS w P G RING front oil pump sealing 11 O D steel 3689775 1 85 55 57 PASS w P G 55 57 CORV w P G 8 cyl RING rear brg retainer 1 free dia 3709099 2 15 50 57 PASS CORV w P G GASKET rear oil pump 2 I D x 4 O D 7 holes 3719267 1 20 57 PASS w T G GASKET front pump shaft 61 g 1 D x 72 O D 18 holes 3732274 1 35 50 54 PASS w P G 53 55 CORV 6 cyl BEARING rear oil pump ND 3205 903205 1 4 408 55 57 PASS w P G 55 57 CORV w P G 8 cyl BEARING rear oil pump ND 43206 954862 1 4 408 50 54 PASS w P G 53 55 CORV 6 cyl PLATE rear oil pump brg lock 11 I D 3694475 1 35 55 57 PASS w P G 55 57 CORV w P G 8 cyl RETAINER rear brg 3 ho1es 1 I D 3708237 1 45 55 57 PASS w P G 55 57 CORV w P G 8 cyl PIN rear oil pump drive 3709063 1 05 4 205 DIAPHRAGM MODULATOR PLUNGER VALVE BODY PLATE COVER SPRING SCREW ELBOW Vacuum Modulator 50 54 PASS w P G 53 55 CORV 6 cyl vac modulator nylon 3709049 1 1 20 57 PASS w T G MODULATOR assy 3727425 1 1 35 57 PASS w T G PLUNGER 3727429 1 10 57 PASS w lT G VALVE 19 3Q O L 3727384 1 30 57 PASS w T G VALVE accumulator check 3732298 1 15 57 PASS w T G BODY valve w plate 3727436 1 2 25 57 PASS w T G PLATE valve body cover 3727383 1 10 50 54 PASS w P G 53 55 CORV 6 cyl COVER diaphragm cast 3692971 3692971 1 95 50 54 PASS w P G 53 55 CORV 6 cyl SPRING diaphragm 4 active coils 3691669 1 30 50 54 PASS w P G 53 57 CORV 6 cyl SCREW diaphragm cover 10 24 x 132046 6 8 907 57 PASS w T G SCREW connector 1 Q 20 3727365 1 15 57 PASS wyT G dual 4BC ELBOW hose to carburetor 3744155 1 95 NOTE For Vac Modulator Pipe cut 46 from O D tubing group 8 964 4 208 HOUSING BODY PISTON RE I AINER RING VALVE LEVER PIN GASKET Hydraulic Modulator 50 54 PASS w P G 53 55 CORV 6 cyl cast 3697577 3697577 1 3 40 57 PASS w T G BODY assy 3738000 1 4 45 50 54 PASS w P G 53 55 CORV 6 cyl i PISTON O D x O L 3697578 2 40 57 PASS w T G PISTON accumulator 3732299 1 40 57 PASS w T G RETAINER accumulator piston 3738002 1 10 57 PASS w T G RING accumulator piston retaining and inner spring retaining 274400 2 4 265 l 57 PASS w T G VALVE 3727381 1 30 50 54 PASS w P G 53 55 CORV 6 cyl LEVER ASSY modulator control 3692968 1 55 50 54 PASS w P G 53 55 CORV 6 cyl PIN control lever guide Lf x 11 3692970 1 06 50 54 PASS w P G 53 55 CORV 6 cyl PIN control lever tulcrum x 2 424286 1 8 939 50 54 PASS w P G 53 55 CORV 6 cyl GASKET modulator housing 3692975 1 30 NOTE When Housing and Plunger Unit cast 3692974 is replaced by 3697577 Housing on 1950 53 models it is also necessary to use 2 of 3697578 Piston 4 210 GEAR Transmission Pump Drive 54 57 ALL w H I rear bronze 14 teeth 8609428 1 5 95 4 203 4 210 384