I GM4 78 D I 012083 m M 4 ig 14 o I mfitoq Q 0 G G 5 tug m s Q1 r g g 0 O 0 D Yir I IW 5 0 T H Q A g 0 I I qi G 40 1 8 63 0 1 O I eg 0 0 m Q V II R gp G1 0 I s G gp I GM4 78 1980 81 X THM125 A T PUMP CONTROL VALVE ASM M34 1 N S BODY Oil Pump 1 2 4 265 PLUG Line Boost Vlv 1st Des 1980 1 8631150 4 265 PLUG Lme Boost Vlv 2nd Des 1980 198 1 1 8631897 3 N S VALVE Line Boost 1 4 4 265 PIN s vn R t 1 8628400 5 4 216 PIN SSS Lin e goost 1st Des 1980 1 8631151 4 216 PIN Spg Line Boost 2nd Des 1980 1981 1 8631896 6 4 265 PIN Coiled Spring 1 8628385 7 4 224 SLEEVE Spg Ret 8631290 8 N s VALVE shank 1 8 N s SPRING Sh ft 10 4 265 PLUG Valve Bore 56 dia 1 8625546 11 4 265 BALL 6 3 Dia 1 147485 12 N S SPRING Press Re ief 1 13 N S SPRING 1 2 Accum 1 14 N s BUSHING 1 2 Accum 1 15 N s VALVE 1 2 Ac um 1 16 N s VALVE 2 3 Shift 1 17 N s VALVE 2 3 Thmu1e 1 18 N s SPRING Throt V1v 1 19 N s BUSHING 2 3 Throt V1v 1 T 1987 GENERAL MOTORS sERv1cE PARTS OPERATIONS 0LDSMOBILE 31A 4 000 GROUP A 4 88 7 87