7. Tightening torques for main bolts and nuts 7.1. Pump part 58 No. Name of parts Tightening torque ( N-m ） No.
Name of parts Tightening torque ( N-m ） MP4 MP2 MP4 MP2 2 Pipe joint bolt, fuel inlet 25 - 29 18 Tappet guide 4 - 5 M12×1.25 M6×1（hexagon socket head） 4 Overflow joint, fuel outlet 25 - 29 19 Plug, barrel 50 - 55 30 - 35 M12×1.25 M18×1 M14×1 5 Bearing retaining screw 8 - 10 21 Delivery holder 40 - 45 M6×1（hexagon socket head） M14×1.25 9 Timer holder 40 - 45 22 Head bolt 28 - 32 18 - 22 M22×1 M10×1.5 （hexagon socket head） M8×1.25 （hexagon socket head） 10 Thermo element 30 - 35 23 Plug, distribution shaft 15 - 20 M16×1 M22×1 11 Plug, cooling water 22 - 25 24 plug, strainer 25 - 29 M14×1 M12×1.25 12 Accumulator 50 - 55 25 Bolt, rink lifter 8 - 10 M20×1 M6×1 14 Bolt, trochoid pump 8 - 10 31 Nut, FIC fixing flange 113 - 123 78 - 88 M6×1 M18×1.5 M14×1.5 15 Bolt, driving shaft 8 - 10 32 End nut 79 - 84 M6×1（hexagon socket head） M12×1.25 17 Retaining screw, rack guide 3 - 4 33 plug, rack 4 - 5 M4×0.7（hexagon socket head） M6×1