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Revision A
Chapter 6:
Reference
The topics provided in this chapter can be consulted as needed.
6.1
Torque Specifications
The following tables provide torque values for various bolts, cap screws, and hydraulic fittings. Refer to these values only
when no other torque value has been specified in a given procedure.
•
Tighten all bolts to the torque values specified in the charts below, unless you are directed otherwise in this manual.
•
Replace removed hardware with hardware of the same strength and grade.
•
Refer to the torque value tables as a guide when periodically checking the tightness of bolts.
•
Understand the torque categories for bolts and cap screws by reading the markings on their heads.
Jam nuts
Jam nuts require less torque than nuts used for other purposes. When applying torque to finished jam nuts, multiply the
torque applied to regular nuts by 0.65 to obtain the modified torque value.
Self-tapping screws
Refer to the standard torque values when installing the self-tapping screws. Do
NOT
install the self-tapping screws on
structural or otherwise critical joints.
6.1.1
Metric Bolt Specifications
Specifications are provided for the appropriate final torque values to secure various sizes of metric bolts.
NOTE:
The torque values provided in the following metric bolt torque tables apply to hardware installed dry; that is, hardware
with no grease, oil, or threadlocker on the threads or heads. Do
NOT
add grease, oil, or threadlocker to bolts or cap screws
unless you are directed to do so in this manual.
10013701001370
A
Figure 6.1: Bolt Grades
Table 6.1 Metric Class 8.8 Bolts and Class 9 Free Spinning Nut
Nominal
Size (A)
Torque (Nm)
Torque (lbf·ft) (*lbf·in)
Min.
Max.
Min.
Max.
3-0.5
1.4
1.6
*13
*14
3.5-0.6
2.2
2.5
*20
*22
4-0.7
3.3
3.7
*29
*32
5-0.8
6.7
7.4
*59
*66
6-1.0
11.4
12.6
*101
*112
8-1.25
28
30
20
23
10-1.5
55
60
40
45
12-1.75
95
105
70
78
14-2.0
152
168
113
124
16-2.0
236
261
175
193
20-2.5
460
509
341
377
24-3.0
796
879
589
651
Содержание Swath Compressor
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