BULLE I I I SUBJECT REVISIONS TO PARTS BOOKS DATE FEBRUARY22 l980 TO GMC TRUCK AND CHEVROLET DEALERS REVISIONS TO PARTS QOK 78TM A Group 0 859 PLATE PRESSURE Complete page 0 73 Remove part 14001987 and add the following 50 60 65 1 1 1 14001988 350 366 13 IN CLUTCH CERMETALIX L incl COVER B Group 3 430 CABLE ACCELERATOR CONTROL page 3 32 part 708350 W should be revised to include the 50 366 427 Engines with Air Brakes P P C Group 4 403 MAINSHAFT TRANSMISSION page 4 10 The correct Mainfig shaft for the SM465 Transmission is 3932265 remove prior to C 1978 Remove part 6259663 tl D Group 4 665 CYLINDER WHEEL BRAKE page 4 121 part 2331949 y should be revised to include the 17121 17221 18121 18221 Axleft E Group 5 529 GEAR BEVEL DRIVE with PINION page 5 76 part 2027737 should be 2020737 and add Gear Stamped 86883 PINION stamped 66845 F Group 7 105 BRACKET FRONT SPRING page 7 7 The group should be revised as follows 50 60 65 2 2 718239 CD CE CS Front Outer RH 8 LH F05q AXLE Eff w 1975 2 2 718513 CD CE CS Front Inner RH G LH 650 AXLE Eff w 1975 2 2 718241 CD CE CS Front Inner RH 8 LH F070 ME F090 F120 AXLE Eff w 197 1 2 2 718526 CD CE CS Front Outer RH G LH F070 f ME F090 Fl20 AXLE Eff w 197 I over I I I Q GMQUALITY GM J SERVICE PARTS GENERALNKHINSRARTSDHHMON r