Komatsu WA380-6 Shop Manual page 50

SEN00779-01
Standard tightening torque table
1. Table of tightening torques for bolts and nuts
a
Unless there are special instructions, tighten metric nuts and bolts to the torque below. (When using
torque wrench)
a
The following table corresponds to the bolts in Fig. A.
Thread diameter of bolt
mm
6
8
10
12
14
16
18
20
22
24
27
30
33
36
39
a
The following table corresponds to the bolts in Fig. B.
Thread diameter of bolt
mm
6
8
10
12
a Fig. A
32
Width across flats
mm
10
13
17
19
22
24
27
30
32
36
41
46
50
55
60
Width across flats
mm
10
13
14
27
Tightening torque
Nm
11.8 – 14.7
27 – 34
59 – 74
98 – 123
153 – 190
235 – 285
320 – 400
455 – 565
610 – 765
785 – 980
1,150 – 1,440
1,520 – 1,910
1,960 – 2,450
2,450 – 3,040
2,890 – 3,630
Tightening torque
Nm
5.9 – 9.8
13.7 – 23.5
34.3 – 46.1
74.5 – 90.2
a Fig. B
00 Index and foreword
1
kgm
1.2 – 1.5
2.8 – 3.5
6.0 – 7.5
10.0 – 12.5
15.5 – 19.5
23.5 – 29.5
33.0 – 41.0
46.5 – 58.0
62.5 – 78.0
80.0 – 100.0
118 – 147
155 – 195
200 – 250
250 – 310
295 – 370
kgm
0.6 – 1.0
1.4 – 2.4
3.5 – 4.7
7.6 – 9.2
WA380-6 (KA SPEC.)