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Engine Torque Settings
TIGHTENING TORQUES FOR SPECIAL USE SCREWS, BOLTS AND NUTS.
Note
• For “*” marked screws, bolts and nuts on the table, apply engine oil to their threads and seats before
tightening
• The letter “M” in size x pitch means that the screw, bolt or nut dimension stands for metric. The size is
the nominal outside diameter in mm of the threads. The pitch is the nominal distance in mm between
two threads.
Item Size x Pitch Nm Kgf-m Ft-lbs
*Cylinder head cover screw M7 x 1.0 6.9 to 8.8 0.7 to 0.9 5.1 to 6.5
*Cylinder head screw M10 x 1.25 63.7 to 68.6 6.5 to 7.0 47.0 to 50.6
*Main bearing case screw 1 M8 x 1.25 29.4 to 34.3 3.0 to 3.5 21.7 to 25.3
*Main bearing case screw 2 M9 x 1.25 49.0 to 53.9 5.0 to 5.5 36.2 to 39.8
*Flywheel screw M10 x 1.25 53.9 to 58.8 5.5 to 6.0 39.8 to 43.4
*Connecting rod screw M8 x 1.0 41.2 to 46.1 4.2 to 4.7 30.4 to 34.0
*Rocker arm bracket nuts M7 x 1.0 21.6 to 26.5 2.2 to 2.7 15.9 to 19.5
*Idle gear shaft screws M6 x 1.0 9.8 to 11.3 1.00 to 1.15 7.2 to 8.3
*Fan drive pulley screw M14 x 1.5 235.4 to 245.2 24.0 to 25.0 173.6 to 180.8
*Bearing case cover mounting screw M6 x 1.0 9.8 to 11.3 1.00 to 1.15 7.2 to 8.3
Glow plugs M8 x 1.0 7.8 to 14.7 0.8 to 1.5 5.8 to 10.8
Nozzle holder assembly M20 x 1.5 49.0 to 68.6 5.0 to 7.0 36.2 to 50.6
Nozzle holder - 34.3 to 39.2 3.5 to 4.0 25.3 to 28.9
Oil pressure switch PT 1/8 14.7 to 19.6 1.5 to 2.0 10.8 to 14.5
Injection pipe retaining nuts M12 x 1.5 24.5 to 34.3 2.5 to 3.5 18.1 to 25.3
Overflow pipe assembly retaining screw M12 x 1.5 19.6 to 24.5 2.0 to 2.5 14.5 to 18.1
Starter’s terminal B mounting nut
(Electromagnetic drive type)
M8 7.8 to 9.8 0.8 to 1.0 5.8 to 7.2
Starter’s terminal B mounting nut
(Planetary gear reduction type)
M8 5.9 to 11.8 0.6 to 1.2 4.3 to 8.7
Alternator’s pulley nut - 58.3 to 78.9 5.95 to 8.05 43.0 to 58.2
Drain plug with copper gasket M12 x 1.25 32.4 to 37.3 3.3 to 3.8 23.9 to 27.5
Drain plug with copper gasket M22 x 1.5 63.7 to 73.5 6.5 to 7.5 47.0 to 54.2
Drain plug with copper gasket M22 x 1.5 44.1 to 53.9 4.5 to 5.5 32.5 to 39.8
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