AirMan PDS185S-6C1, Руководство по обслуживанию

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2. Maintenance
2-2
2.2 Tightening torque
General bolts and nuts tightening torque
Fasten all the bolts and nuts with the specified tightening torque when assembling.
Low or Middle carbon steel bolt
(SS400B etc…)
High tensile strength bolt
(SCM435 etc…)
4.6
～
6.8
（
4T
～
6T
）
Hexagon bolts
8.8
～
12.9
（
7T
～
12T
）
Socket bolts Hexagon bolts
Hexagon bolts
Width of across
flat in.(mm)
Tightening torque
lbf
･
in. (kgf
･
cm)
Socket bolts
Width of across
flat in.(mm)
Hexagon bolts
Width of across
flat in.(mm)
Tightening torque
lbf
･
in. (kgf
･
cm)
0.24 (6) 0.39 (10) 44 (51) 0.20 (5) 0.39 (10) 87 (100)
0.31 (8) 0.51 (13) 108 (124) 0.24 (6) 0.51 (13) 213 (245)
0.39 (10) 0.67 (17) 213 (245) 0.31 (8) 0.67 (17) 421 (485)
0.47 (12) 0.75 (19) 370 (425) 0.39 (10) 0.75 (19) 734 (845)
0.55 (14) 0.87 (22) 586 (675) 0.47 (12) 0.87 (22) 1172 (1350)
0.63 (16) 0.94 (24) 916 (1055) 0.55 (14) 0.94 (24) 1823 (2100)
0.71 (18) 1.06 (27) 1260 (1450) 0.55 (14) 1.06 (27) 2517 (2900)
0.79 (20) 1.18 (30) 1780 (2050) 0.67 (17) 1.18 (30) 3560 (4100)
0.87 (22) 1.26 (32) 2430 (2800) 0.67 (17) 1.26 (32) 4861 (5600)
0.94 (24) 1.42 (36) 2995 (3450) 0.75 (19) 1.42 (36) 6163 (7100)
Applied sections.
For general sections such as
bonnet and frame.
For specified sections.
Generally, the abovementioned tightening torques should be followed, but in some points different
torque is specified. So use the tightening torque without fail. (See following pages.)
Make sure to remove rust and dust before tightening.
Bolt diameter
in.(mm)
Kind
Strength
and sorting
Width of
across flat
･
Tightening
torque
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