Tightening Torques - Kubota M4900 2WD Workshop Manual

M4900 · M5700, WSM

6. TIGHTENING TORQUES

Screws, bolts and nuts whose tightening torques are not specified in this Workshop Manual should be tightened
according to the table below.
Indication on top of
bolt
Material of bolt
Material of opponent
Ordinariness
part
Unit
N·m
Diameter
7.84
M6
to
(6 mm, 0.24 in.)
9.31
17.7
M8
to
(8 mm, 0.31 in.)
20.5
39.2
M10
to
(10 mm, 0.39 in.)
45.0
62.8
M12
to
(12 mm, 0.47 in.)
72.5
108
M14
to
(14 mm, 0.55 in.)
125
167
M16
to
(16 mm, 0.63 in.)
191
245
M18
to
(18 mm, 0.71 in.)
284
334
M20
to
(20 mm, 0.79 in.)
392
No-grade or 4T
SS400, S20C
Aluminum
kgf·m ft-lbs N·m kgf·m
0.80 5.79 7.84 0.80
to to to to
0.95 6.87 8.83 0.90
1.8 13.0 16.7 1.7
to to to to
2.1 15.2 19.6 2.0
4.0 29.0 31.4 3.2
to to to to
4.6 33.2 34.3 3.5
6.4 46.3
to to – –
7.4 53.5
11.0 79.6
to to – –
12.8 92.5
17.0 123
to to – –
19.5 141
25.0 181
to to – –
29.0 210
34.0 246
to to – –
40.0 289
S43C, S48C
Ordinariness
ft-lbs N·m kgf·m ft-lbs
5.79 9.81 1.00 7.24
to to to
to
6.51 11.2 1.15 8.32
12.3 23.6 2.4 17.4
to to to to
14.5 27.4 2.8 20.2
23.1 48.1 4.9 35.5
to to to to
25.3 55.8 5.7 41.2
77.5 7.9 57.2
– to to to
90.1 9.2 66.5
124 12.6 91.2
– to to to
147 15.0 108
196 20.0 145
– to to to
225 23.0 166
275 28.0 203
– to to to
318 32.5 235
368 37.5 272
– to to to
318
431 44.0
G-12
G GENERAL
7T
SCr435,
SCM435
Aluminum Ordinariness
N·m kgf·m ft-lbs N·m
7.84 0.80 5.79 12.3
to to to to
8.83 0.90 6.51 14.2
17.7 1.8 13.0 29.4
to to to to
20.6 2.1 15.2 34.3
39.2 4.0 28.9 60.8
to to to to
44.1 4.5 32.5 70.5
62.8 6.4 46.3 103
to to to to
72.5 7.4 53.5 117
167
– – – to
196
260
– – – to
303
343
– – – to
401
490
– – – to
568
9T
kgf·m ft-lbs
1.25 9.05
to to
1.45 10.5
3.0 21.7
to to
3.5 25.3
6.2 44.9
to to
7.2 52.1
10.5 76.0
to to
12.0 86.8
17.0 123
to to
20.0 144
26.5 192
to to
31.0 224
35.0 254
to to
41.0 297
50.0 362
to to
58.0 420
W1034542
KiSC issued 08, 2008 A