Kubota U48-4, Workshop Manual

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GENERAL
U48-4,U55-4, WSM
G-12
5. TIGHTENING TORQUES
[1] GENERAL USE SCREWS, BOLTS AND NUTS
Screws, bolts and nuts whose tightening torques are not specified in this Workshop Manual should be
tightened according to the table below.
RY9212032GEG0001US0
[2] STUD BOLTS
RY9212032GEG0002US0
Indication on top of bolt
No-grade or 4T 7T 9T
Indication on top of nut
No-grade or 4T
6T
Material of opponent part Ordinariness Aluminum Ordinariness Aluminum Ordinariness
Unit N·m kgf·m lbf·ft N·m kgf·m lbf·ft N·m kgf·m lbf·ft N·m kgf·m lbf·ft N·m kgf·m lbf·ft
M6
7.9
to
9.3
0.80
to
0.95
5.8
to
6.8
7.9
to
8.8
0.80
to
0.90
5.8
to
6.5
9.81
to
11.2
1.00
to
1.15
7.24
to
8.31
7.9
to
8.8
0.80
to
0.90
5.8
to
6.5
12.3
to
14.2
1.25
to
1.45
9.05
to
10.4
M8
18
to
20
1.8
to
2.1
13
to
15
17
to
19
1.7
to
2.0
13
to
14
24
to
27
2.4
to
2.8
18
to
20
18
to
20
1.8
to
2.1
13
to
15
30
to
34
3.0
to
3.5
22
to
25
M10
40
to
45
4.0
to
4.6
29
to
33
32
to
34
3.2
to
3.5
24
to
25
48
to
55
4.9
to
5.7
36
to
41
40
to
44
4.0
to
4.5
29
to
32
61
to
70
6.2
to
7.2
45
to
52
M12
63
to
72
6.4
to
7.4
47
to
53
– – –
78
to
90
7.9
to
9.2
58
to
66
63
to
72
6.4
to
7.4
47
to
53
103
to
117
10.5
to
12.0
76.0
to
86.7
M14
108
to
125
11.0
to
12.8
79.6
to
92.5
– – –
124
to
147
12.6
to
15.0
91.2
to
108
– – –
167
to
196
17.0
to
20.0
123
to
144
M16
167
to
191
17.0
to
19.5
123
to
141
– – –
197
to
225
20.0
to
23.0
145
to
166
– – –
260
to
304
26.5
to
31.0
192
to
224
M18
246
to
284
25.0
to
29.0
181
to
209
– – –
275
to
318
28.0
to
32.5
203
to
235
– – –
344
to
402
35.0
to
41.0
254
to
296
M20
334
to
392
34.0
to
40.0
246
to
289
– – –
368
to
431
37.5
to
44.0
272
to
318
– – –
491
to
568
50.0
to
58.0
362
to
419
Material of opponent part Ordinariness Aluminum
Unit N·m kgf·m lbf·ft N·m kgf·m lbf·ft
M8
12
to
15
1.2
to
1.6
8.7
to
11
8.9
to
11
0.90
to
1.2
6.5
to
8.6
M10
25
to
31
2.5
to
3.2
18
to
23
20
to
25
2.0
to
2.6
15
to
18
M12
30
to
49
3.0
to
5.0
22
to
36
31 3.2 23
M14
62
to
73
6.3
to
7.5
46
to
54
– – –
M16
98.1
to
112
10.0
to
11.5
72.4
to
83.1
– – –
M18
172
to
201
17.5
to
20.5
127
to
148
– – –
KiSC issued 03, 2010 A