Tightening Torques; Tightening Torques Of Screws, Bolts And Nuts For General Use; Tightening Torques Of Screws, Bolts And Nuts For Special Use - Kubota WSM 05-E4B Series Workshop Manual

4. ENGINE

3. Tightening torques

Refer to the following table if the tightening torques of screws, bolts and nuts are not specified in each part.

3.1 Tightening torques of screws, bolts and nuts for general use

If the tightening torque is not specified, refer to the table below for the none specified torques values.
Indication on top
of bolt
Indication on top
of nut
Unit N⋅m
M6 7.8 to 9.3
M8 17.7 to 20.6
M10 39.2 to 45.1
M12 62.8 to 72.6

3.2 Tightening torques of screws, bolts and nuts for special use

NOTE
• For the screws, bolts and nuts with the mark "*", apply engine oil to their threads and seats before you
tighten.
• The alphabet "M" in Dimension × Pitch shows that the screw, bolt or nut dimensions are in the metric
system. The dimension is the nominal external diameter in mm of the threads. The pitch is the nominal
distance in mm between 2 threads.
Disassembling and assembling
Cylinder head cover screw
[D1005-E4B/E4BG, D1105-E4B/E4BG, V1505-E4B/
E4BG]
Cylinder head cover screw
[D1305-E4B/E4BG]
*Cylinder head mounting screw
*Main bearing case screw 1
*Main bearing case screw 2
*Flywheel screw
*Connecting rod screw
*Rocker arm bracket nut
[D1005-E4B/E4BG, D1105-E4B/E4BG, V1505-E4B/
E4BG]
*Rocker arm bracket screw
[D1305-E4B/E4BG]
4-16
No-grade or 4T
kgf⋅m
0.80 to 0.94
1.81 to 2.10
4.00 to 4.59
6.41 to 7.40
Item
No-grade or 4T
lbf⋅ft N⋅m
5.8 to 6.8 9.80 to 11.3
13.1 to 15.1 23.5 to 27.5
29.0 to 33.2 49.0 to 55.9
46.4 to 53.5 77.5 to 90.2
Dimension
N⋅m
× Pitch
M7 × 1.0 7 to 8
M6 × 1.0 9.81 to 11.2
M10 × 1.25 64 to 68
M8 × 1.25 30 to 34
M9 × 1.25 49 to 53
M10 × 1.25 54 to 58
M8 × 1.0 42 to 46
M7 × 1.0 16.6 to 21.6
M7 × 1.0 16.6 to 21.6
SERVICING
3. Tightening torques
7T
kgf⋅m lbf⋅ft
1.00 to 1.15 7.23 to 8.33
2.40 to 2.80 17.4 to 20.2
5.00 to 5.70 36.2 to 41.2
7.91 to 9.19 57.2 to 66.5
kgf⋅m lbf⋅ft
0.7 to 0.9 5 to 6
1.00 to 1.15 7.24 to 8.31
6.5 to 7.0 47 to 50
3.0 to 3.5 22 to 25
5.0 to 5.5 37 to 39
5.5 to 6.0 40 to 43
4.3 to 4.6 31 to 33
1.70 to 2.20 12.3 to 15.9
1.70 to 2.20 12.3 to 15.9
(Continued)
05-E4B SERIES,05-E4BG SERIES
KiSC issued 03, 2023 A