1946 70 ENGINIE ASSEMBLIES 0 646 CRANKSHAFT Con t 63 66 All 292 exc A T 3909427 1 CRANKSHAFT UNIT w f wheel Note 3 0 648 SLINGER Crankshaft Oil 2 65 66 All D351 D DH478 I 67 69 All D DH478 8874266 1 front 0 649 BEARING Crankshaft Clutch Pilot 55 62 All exc 322 348 409 Diesel 63 70 All 6 cyl exc Diesel 64 68 All 283 307 69 Ser 40 350 3752487 1 bush type u 0 D x 56 62 All 8 cyl exc 265 283 62 69 Diesel exc D351 D DH478 63 70 All 8 cyl exc 283 904983 1 ball type M I D x 2 M O D x N 65 69 All D351 D DH478 907321 1 ND 7109 u I D x 1 u O D x az 0 659 BALANCER HUB KEY PULLEY SHAFT Crankshaft and Camshaft NOTE 1 When using on 7955 jobs a spacer must be used to accomodate oil slinger NOTE 2 Bolts in this assy are to be used for driving the balancer on the top crankshaft when the special driving tool is not available Remove bolts after installation NOTE 3 Used with pulleys hubs having a shallow M deep keyway only All full depth slots take standard Woodruff key 106751 two short or 1 44542 one long in Group 8 960 NOTE 4 Requires key for deep keyway NOTE ln some cases double groove pulleys may be used in place of single groove pulleys 41 52 All 216 53 1 2 Ton 216 605203 1 cast 838863 3 width thru hub 6 I dia Note 1 53 D D exc P S 3704338 1 weight 7 0 D pulley V Note 1 55 59 All 6 cyl exc A O H B 60 62 All 6 cyl exc Air Equip P S Tilt 3714444 1 stamped T hub 7 z dia Note 1 2 55 62 All 8 cyl exc 322 Tilt 63 65 Ser 60 w forged crankshaft 327 exc Tilt V 64 65 All w nodular crankshaft 283 66 Ser 50 w nodular crankshaft l 283 67 Ser 40 w nodular crankshaft 283 68 All 307 3896904 1 w 0 pulley hub 4 O D 58 62 All w Air Equip 261 exc I Tilt 60 62 Ser 60 w P S 261 exc Tilt 62 Ser 40 thru 60 w 62 amp AC gen 3740518 1 w pulley double hub 7 dia 60 62 All w Cool Pack 6 cyl 3772879 1 w pulley hub 6 u dia 60 65 All 348 409 exc Tilt 3955288 1 w o pulley 60 64 Ser 60 Tilt 8 cyl 65 67 Tilt 283 327 3829092 1 w pulley triple 63 65 Ser 50 60 292 66 70 All 292 3980230 1 w pulley 3 groove I 63 65 Ser 50 230 exc Tilt 3826280 1 w pulley timing mark on front face 30 degree left 65 66 All D DH478 2449211 1 65 66 All D351 2451607 1 65 66 Ser 60 327 exc Tilt 67 68 All 327 3894331 1 w o pulley 12 ig holes in weight drill pin balanced torsional Note 4 86 Ser 50 250 exc Tilt 67 70 Ser 40 250 3896590 1 w 2 groove pulley Note 4 66 70 All 366 364720 1 w 4 groove pulley 66 Ser 50 w forged crankshaft I 283 2nd design exc Tilt 3896903 1 w 0 pulley Note 4 68 70 All 427 364722 1 68 Tilt 307 327 3914683 1 I 69 70 Ser 50 Tilt 350 6272226 1 69 70 All 350 exc Tilt 6272222 1 63 65 Ser 50 w forged crankshaft 283 3795272 1 HUB pulley or balancer 65 66 All w key 4 long x i wide 3883206 A R KEY crankshaft pulley hub Note 3 ps 65 66 All w key 1 long x i wide x u high 3885092 1 KEY crankshaft pulley hub Note 3 55 56 Ser 5 1st design exc P S GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TM REV 5 79 0 25 0 646 0 659