Kubota EA330-E4 Series - TIGHTENING TORQUES

ENGINE
EA330-E4, WSM
1-S11
3. TIGHTENING TORQUES
[1] TIGHTENING TORQUES FOR SPECIAL USE SCREWS, BOLTS
AND NUTS
Screw, bolts and nuts must be tightened to the specified torque using a torque wrench.
Several bolts and nuts such as ones used on the cylinder head must be tightened in proper sequence and to the
proper torque.
NOTE
• For "**" marked screws and nuts on the table, apply engine oil to their threads and seats before
tightening.
9Y1211018ENS0003US0
Item Size × Pitch N·m kgf·m lbf·ft
Cylinder head (Stud) M9 × 1.25 25 to 29 2.5 to 3.0 18 to 21
**Cylinder head (Nut) M9 × 1.25 57 to 61 5.8 to 6.3 42 to 45
**Connecting rod screw M7 × 0.75 27 to 30 2.7 to 3.1 20 to 22
**Flywheel nut M20 × 1.5 197 to 215 20.0 to 22.0 145 to 159
Main bearing case mounting screw /
nut
M6 × 1.0 9.81 to 11.2 1.00 to 1.15 7.24 to 8.31
Crankcase cover mounting screw M6 × 1.0 7.9 to 9.3 0.80 to 0.95 5.8 to 6.8
Gear case mounting screw M6 × 1.0 9.81 to 11.2 1.00 to 1.15 7.24 to 8.31
Idle gear shaft screw M6 × 1.0 9.81 to 11.2 1.00 to 1.15 7.24 to 8.31
Head cover mounting nut M7 × 1.0 9.8 to 10 1.0 to 1.1 7.3 to 7.9
**Rocker arm bracket mounting nut M7 × 1.0 17 to 20 1.7 to 2.1 13 to 15
Oil signal holder PT 1/8 15 to 19 1.5 to 2.0 11 to 14
Oil signal / Oil Switch PT 1/8 6.9 to 9.8 0.70 to 1.0 5.1 to 7.2
Oil strainer M20 ×x 1.5 25 to 34 2.5 to 3.5 18 to 25
Injection pump mounting screw M6 × 1.0 9.81 to 11.2 1.00 to 1.15 7.24 to 8.31
Nozzle holder Assembly M20 × 1.5 49 to 68 5.0 to 7.0 37 to 50
Nozzle holder – 35 to 39 3.5 to 4.0 26 to 28
Over flow eye joint pipe mounting nut M12 × 1.5 20 to 24 2.0 to 2.5 15 to 18
Muffler mounting nut M8 × 1.25 24 to 27 2.4 to 2.8 18 to 20
Tension pulley pivot screw M8 × 1.25 20 to 23 2.0 to 2.4 15 to 17
Injection pipe retaining nut M12 × 1.5 25 to 34 2.5 to 3.5 18 to 25
Injection pump eye joint bolt M12 × 1.5 25 to 29 2.5 to 3.0 18 to 21
Glow plug M8 × 1.0 7.9 to 14 0.80 to 1.5 5.8 to 10
Glow plug terminal nut M4 × 0.7 0.98 to 1.7 0.10 to 0.18 0.73 to 1.3
Radiator mounting screw / nut M6 × 1.0 5.9 to 7.8 0.60 to 0.80 4.4 to 5.7
KiSC issued 05, 2015 A