8
Reference
8.1
Recommended Torques
8.1.1
Torque Specifications
The following tables provide the correct torque values for various bolts, cap screws, and hydraulic
fi
ttings.
• Tighten all bolts to the torque values speci
fi
ed in the charts (unless otherwise noted throughout this manual).
• Replace hardware with the same strength and grade of bolt.
• Use the torque value tables as a guide and periodically check tightness of bolts.
• Understand torque categories for bolts and cap screws by using their identifying head markings.
SAE Bolt Torque Specifications
Torque values shown in the following tables are valid for non-greased, or non-oiled threads and heads; therefore,
do
NOT
grease or oil bolts or cap screws unless otherwise speci
fi
ed in this manual.
Table 8.1 SAE Grade 5 Bolt and Grade 5 Free
Spinning Nut
Torque (ft·lbf)
(*in·lbf)
Torque (N·m)
Nominal
Size (A)
Min.
Max.
Min.
Max.
1/4-20
*106
*117
11.9
13.2
5/16-18
*218
*241
24.6
27.1
3/8-16
32
36
44
48
7/16-14
52
57
70
77
1/2-13
79
87
106
118
9/16-12
114
126
153
170
5/8-11
157
173
212
234
3/4-10
281
311
380
420
7/8-9
449
496
606
669
1-8
611
676
825
912
Figure 8.1: Bolt Grades
A - Nominal Size
B - SAE-8
C - SAE-5
D - SAE-2
147649
453
Revision A
Summary of Contents for M155
Page 3: ...Declaration of Conformity Figure 1 Declaration of Conformity Page 1 of 2 147649 i Revision A ...
Page 4: ...Figure 2 Declaration of Conformity Page 2 of 2 147649 ii Revision A ...
Page 30: ...SAFETY Figure 1 21 Safety Signs Left Cab forward Side 147649 14 Revision A ...
Page 32: ...SAFETY Figure 1 23 Safety Signs Right Cab forward Side 147649 16 Revision A ...
Page 44: ......
Page 54: ......
Page 320: ......
Page 414: ...MAINTENANCE AND SERVICING Fuse Box Decal Figure 5 178 Fuse Decal 147649 398 Revision A ...
Page 468: ......
Page 509: ......