4 SPEED TRANSMISSION 4 505 CASE ASSY Four Wheel Drive Transfer NOTE 1 Less yokes and def ectors I I 67 69 Ser 10 20 3928556 1 transfer Note 1 69 70 Blazer 3981793 1 transfer Q A 70 72 Ser 10 20 Blazer A 3990935 1 Note 1 NP10105 L 1 I 4 510 CASE ADAPTER CAP COVER RETAINER SCREW SLEEVE VENT ASSY Four Wheel Drive Transfer I 67 69 All 3912174 1 Timken 3875 M 793 I 69 70 Blazer 3975725 A 1 Atransfer Spicer 18 15 37 A 69 72 All Blazer 3975702 1 A CASE ASSY transfer NP99415 I 68 69 All w 4 Spd Q 3950425 1 ADAPTER transfer case mtg I 69 70 Blazer w Muncie 4 Spd 3950466 1 ADAPTER transfer case mtg I A 70 72 Ser 10 20 w Muncie 4 Spd 6271549 A1 ADAPTER I 60 69 All 2400557 1 CAP transfer case input shaft rear brg 1 I I Timken 3866 R 746 I 60 69 All I I 2400558 A R CAP transfer case rear output shaftfrt A I I brg idler shaft and rr brg Timken 3866 A A I I T 748 69 70 Blazer 3975723 I 1 I CAP frt output shaft rr brg Spicer 18 A 19 40 I 69 70 Blazer 3995830 1 r CAP rear output shaft brg 60 69 All A I 2410239 A R CAP ASSY w oil seal frt brg input and A I I I I A output shaft Timken A3 3866 U 749 60 69 All 2405638 1 A CAP ASSY w oil seal rear brg output A A I shaft Timken A 3866 Y 805 I I 69 70 Blazer 3975755 1 COVER transfer case bottom Spicer A 6550X A 71 72 All Blazer Q 3975710 1 A COVER idler shaft NP38579 I A 69 72 BlazerAw 4 SIpd 3950457 1 RETAINER adapter rear brg I 71 72 All Blazer 3967897 1 RETAINER rear output shaft seaIA I A I I NP94687 I 71 72 All Blazer I 6273966 1 RETAINER front output shaft brg 71 72 All Blazer 3995821 1 RETAINER ASSY rear output shaft bearing NP99885 I I 71 72 All Blazer Q 3 995881 1 RETAINER ASSY frt output shaft rear I A A I bearing NP97836 A 6 7 68 AAII 222504 1 SCREW 16 x Z 8 975 67 I All w 4 Spd Q 3890590 2 SLEEVE transfer case I 66 All w 4 Spd 3932269 1 SLEEVE transfer case A A 69 All w 4 Spd A 3950424 1 SLEEVE trans case A A 70 72 Ser 10 20 w Muncie 4 Spd 6263040 1 SLEEVE case drive 57 59 All A 2257165 1 VENT ASSY transfer case 1 O L A I 4 104 A 71 72 Ser 10 20 Blazer 3967890 1 VENT ASSY trans case NP9429 2 A A I I 4 515 GASKET SEAL SHIM Four Wheel Drive Transfer Case t A NOTE 1 Consists of one each gaskets idler shaft cover P O cover oil seal retainer adapter two each A A gaskets front retainer poppet screw and four gaskets rear retainer I A 60 66 All 4 2400547 1 transfer case input shaft rr brg cap I Timken 2808 Z 910 A 60 69 All 2400548 1 transfer case cover 9 x 5 A Timken I I 2808 A 911 I 60 89 All 2400549 1 transfer case output shaft frt brg cap I r Timken 2808 B 912A 3 t 0 D 60 69 All 2400550 1 transfer case output shaft Arr brg cap A A Timken 2808 C 913 4 hole 60 66 All 2400551 1 transfer case idler shaft rr brg cap I A A Timken 2808 D 914 A 60 66 All I I 2400552 1 transfer case rr output shaft rr brg cap Timken 2808 E 915 I 67 70 All 3912172 A R idler shaft front cover or rear output shaft I front cover Timken 2808 Y 1 169 67 69 All 3912173 1 input shaft front cover Timken 2808 2 A I 1 t Il 69 70 All w Muncie 4 Spd I 3901180 1 trans rr brg ret 4 318 L 69 70 Blazer I 3950469 1 trans adapter to transfer case I I A 69 70 Blazer 3975736 1 transfer case cover Spicer 18 155 2 I 69 70 Blazer I 3975735 1 A fr output shaft oil sealf Spicer 18 223 3 A 69 70 Blazer 3975734 1 frt output shaft frt brg Spicer 18 223 2 A 69 Blazer s 3995629 1 rear output shaft bearing cap I I g1 72 All Blazer Q 6261466 A 1 case to adapter NP99483 1 72 All Blazer I A 3979453 1 I oil seal retainer NP94387 71 72 All Blazer 3975707 1 frt output shaft brg ret 010 NP38566 I A A A A I i GM PARTS DIVIISION GENERAL MOTORS CORPORATION CHEVROLET 72TL I A REV 5 79 A 4 99 4 505 4 51 5