ENGINE
B1220, B1620, B1820, WSM
1-S9
(EU)
3. TIGHTENING TORQUES
Tightening torques of screws, bolts and nuts on the table below are especially specified.
(For general use screws, bolts and nuts : See page G-11.)
[TRACTOR BODY]
[ENGINE]
• For "*" marked screws, bolts and nuts on the table, apply engine oil to their threads and seats before
tightening.
• The letter "M" in Size × 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.
9Y1210272ENS0013US0
Item N·m kgf·m lbf·ft
Steering wheel mounting nut 30 to 49 3.0 to 5.0 22 to 36
Drag link slotted nut 18 to 35 1.9 to 3.5 14 to 25
Power Steering delivery pipe nut 35 to 45 3.6 to 4.5 26 to 33
Front axle frame mounting screw 78 to 90 7.9 to 9.2 58 to 66
Clutch housing and engine mounting screw 18 to 20 1.8 to 2.1 13 to 15
Clutch cover mounting screw 24 to 27 2.4 to 2.8 18 to 20
Item
Dimension ×
Pitch
N·m kgf·m lbf·ft
*Cylinder head cover screw M6 × 1 9.81 to 11.2 1.00 to 1.15 7.24 to 8.31
Injection pipe retaining nut M12 × 1.5 25 to 34 2.5 to 3.5 18 to 25
Overflow pipe retaining nut M12 × 1.5 20 to 24 2.0 to 2.5 15 to 18
Nozzle holder assembly M20 × 1.5 49 to 68 5.0 to 7.0 37 to 50
Glow plug M8 × 1 7.9 to 14 0.80 to 1.5 5.8 to 10
*Rocker arm bracket nut M6 × 1 9.81 to 11.2 1.00 to 1.15 7.24 to 8.31
*Cylinder head screw M8 × 1.25 38 to 42 3.8 to 4.3 28 to 31
*Fan drive pulley screw M12 × 1.5 118 to 127 12.0 to 13.0 86.8 to 94.0
*Nut M20 × 1 79 to 88 8.0 to 9.0 58 to 65
*Idle gear shaft mounting screw M6 × 1 9.81 to 11.2 1.00 to 1.15 7.24 to 8.31
Oil pump mounting screw M8 × 1.25 17.7 to 21.5 1.80 to 2.20 13.1 to 15.9
*Connecting rod screw M7 × 0.75 27 to 30 2.7 to 3.1 20 to 22
*Flywheel screw M10 × 1.25 54 to 58 5.5 to 6.0 40 to 43
Bearing case cover mounting screw M6 × 1 9.81 to 11.2 1.00 to 1.15 7.24 to 8.31
*Main bearing case screw 2 M7 × 1 27 to 30 2.7 to 3.1 20 to 22
*Main bearing case screw 1 M6 × 1 13 to 15 1.3 to 1.6 9.4 to 11
Oil pressure switch PT 1/8 15 to 19 1.5 to 2.0 11 to 14
Nozzle holder – 35 to 39 3.5 to 4.0 26 to 28
Drain plug with copper gasket M12 × 1.25 33 to 37 3.3 to 3.8 24 to 27
Drain plug with copper gasket M22 × 1.5 64 to 73 6.5 to 7.5 47 to 54
Drain plug with rubber coated gasket M22 × 1.5 45 to 53 4.5 to 5.5 33 to 39
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