w I FD GIVI4 78 l I W P tm 1 Wy 9 I I 9 ID I Q xw WN 0 O few Q 1 e I Q J QB 2 AIM q W A 0 s P el Q Q Q I 1 w QJ 6 I 9 i 1 17 o j 3 P 28 ASV lh I lc I T I I w s GQQUH I I Il Us P 0 Sen 7 T 9 w we Q 6 0 9 I lr l l EQ Y 1 Q I 27 l 1 I GM4 78 I l 1980 81 X TRANSMISSION PUMP CONTROL VALVE ASM M34 A I l 1 N S BODY Oil Pump 1 26 4 265 PLUG Low Blow Off 2 4 265 PLUG Line Boost V v 1st VaIve 1 8631449 Des 1980 1 8631150 27 8 900 BOLT Hex M6 x 1 x 25 1 4 265 PLUG Line Boost Vlv 2nd 28 4 224 COVER Pump W S eeve 1 8631938 Des 1980 1981 1 8631897 29 4 224 SLEEVE Pump Cover 1 8631288 3 N S VALVE Line Boost 1 30 4 226 PIN Slide Pivot 1 8628273 4 4 265 PIN Spg Vlv Ret 1 8628400 31 N S RING Oil Seal Slide to 5 4 216 PIN Spg Line Boost lst Des Cover 1 2 1980 1 8631151 32 N S SEAL O Ring 1 2 l 4 216 PIN Spg Line Boost 2nd Des 33 N S SLIDE Pump 1 l 1980 1981 1 8631896 34 N S SUPPORT Pump Slide seaI 6 4 265 PIN Coiled Spring 1 8628385 1 2 7 4 224 SLEEVE Spg Ret 8631290 35 N S SEAL Pump Slide 1 2 8 N S VALVE Shift 1 36 N S RING Pump Vane 1 9 N S SPRING Shift 37 N S VANE Pump 1 10 4 265 PLUG Valve Bore 56 38 N S ROTOR Oil Pump 1 V I dia 1 1 8625546 39 4 226 BEARING Pump Shf 1 8631277 11 4 216 BALL 6 3 Dia 1 147485 40 N S SPRING 3 2 Va ve 1 12 N S SPRING Press ReIief 1 41 N S VALVE 3 2 ControI 1 13 N S SPRING 1 2 Accum 1 42 8 970 PLUG 11 16 Dia 1 14 N S BUSHING 1 2 Accum 1 43 4 216 SPRING Priming 1 8631717 15 N S VALVE 1 2 Accum 1 44 N S BUSHING TV Boost 16 N S VALVE 2 3 Shift 1 Va ve 1 17 N S VALVE 2 3 Thrott e 1 45 N S VALVE TV Boost 1 18 N S SPRING Throt VIv 1 46 N S BUSHING Rev Boost VIv 1 19 N S BUSHING 2 3 Throt V v 1 47 N S VALVE Rev Boost 1 20 N S VALVE 1 2 Shift 1 48 N S SPRING Press Reg 1 21 N S VALVE 1 2 Thrott e 1 49 N S VALVE Press Reg 1 A 22 N S SPRING Throt V v 1 50 N S BUSHING TV P unger 1 23 N S BUSHING 1 2 Throt Vlv 1 51 N S PLUNGER Throt Vlv 1 24 4 216 BALL 6 3 1 147485 52 N S SPRING Throt V v 1 25 4 265 SPRING W Plug Low Blow 53 N S VALVE Thr0tt e 1 Off 1 8631768 NOTE 7 Part of 4 224 863 7997 PUMP W Control Valve Oil 4 Cyl 1980 NOTE 7 Part of 4 224 8631992 PUMP W Contr0 Valve Oil 6 CyI 1980 NOTE 1 Part of 4 224 8637901 PUMP W Control Valve Oil 6 Cyl 1981 NOTE 2 Pan or 4 226 PUMP S ide Kit I I sea S WAFIEHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORAT O N BU CK 41A 4 000 GROUP 4 50 REV 2 5 81