GZD15, WSM ENGINE
1-S9
3. TIGHTENING TORQUES
Tightening torques of screws and nuts on the table below are especially specified.
(For general use screws and nuts : See page G-9.)
Item Size x Pitch ft-lbs
Under cover mounting screw and nut M6 x 1 7.8 to 8.8 0.8 to 0.9 5.8 to 6.5
Front coupling mounting screw M8 x 1.25 23.5 to 27.4 2.4 to 2.8 17.3 to 20.2
Engine mounting nut M8 x 1.25 23.5 2.4 17.3
Cushion mounting nut M8 x 1.25 23.5 2.4 17.3
Air cleaner stay screw M8 x 1.25 23.5 to 27.4 2.4 to 2.8 17.4 to 20.3
Engine support screw M10 x 1.25 48.0 to 55.9 4.9 to 5.7 35.4 to 41.2
*Cylinder head cover screw M6 x 1 6.86 to 11.3 0.7 to 1.15 5.1 to 8.3
Injection pipe retaining nut M12 x 1.5 24.5 to 34.3 2.5 to 3.5 18.1 to 25.3
Overflow pipe retaining nut M12 x 1.5 19.6 to 24.5 2.0 to 2.5 14.5 to 18.1
Nozzle holder assembly M20 x 1.5 49.0 to 68.6 5.0 to 7.0 36.2 to 50.6
Glow plug M8 x 1 7.85 to 14.7 0.8 to 1.5 5.8 to 10.8
*Rocker arm bracket screw M6 x 1 9.8 to 11.3 1.00 to 1.15 7.2 to 8.3
*Cylinder head screw M8 x 1.25 37.3 to 42.2 3.8 to 4.3 27.5 to 31.1
*Fan drive pulley screw M12 x 1.5 98.0 to 107.8 10.0 to 11.0 72.3 to 79.5
*Idle gear shaft mounting screw M6 x 1 9.8 to 11.3 1.00 to 1.15 7.2 to 8.3
*Connecting rod screw M7 x 0.75 26.5 to 30.4 2.7 to 3.1 19.5 to 22.4
*Flywheel screw M10 x 1.25 53.9 to 58.8 5.5 to 6.0 39.8 to 43.4
Bearing case cover mounting screw M6 x 1 9.8 to 11.3 1.00 to 1.15 7.2 to 8.3
*Main bearing case screw 2 M7 x 1 26.5 to 30.4 2.7 to 3.1 19.5 to 22.5
*Main bearing case screw 1 M6 x 1 12.7 to 15.7 1.3 to 1.6 9.37 to 11.6
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
A In removing and applying the screws and nuts marked with "*", a pneumatic wrench or similar
pneumatic tool, if employed, must be used with enough care not to get them seized.
A For "*" marked screws and nuts on the table, apply engine oil to their threads and seats before
tightening.
A The letter "M" in Size x Pitch means that the screw 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.
0000001698E
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