Maintenance
83
Screwed
connections
Tightening bolts
All bolts must be retightened:
•
After the first 5 hours of operation and
•
According to the frequency of use,
•
But at least once a season.
Tightening torques
for screwed
connections
All screwed connections must be tightened in accordance with the
table below, if no other torques are specified. On this machine, bolts
with a minimum quality of "8.8" (can be seen on the bolt head) are
used. The torque specifications refer to a dry coefficient of friction
(0.12).
Tighten safety bolts and nuts with a 10% higher value.
Bolt size
Bolt quality
8.8
10.9
12.9
M 6
9.9 Nm (7.3 ft.lbs)
14 Nm (10.3 ft.lbs)
17 Nm (12.5 ft.lbs)
M 8
24 Nm (17.7 ft.lbs)
34 Nm (25 ft.lbs)
41 Nm (30.3 ft.lbs)
M 10
48 Nm (35.4 ft.lbs)
68 Nm (50.2 ft.lbs)
81 Nm (59.8 ft.lbs)
M 12
85 Nm (62.7 ft.lbs)
120 Nm (88.6 ft.lbs)
145 Nm (107 ft.lbs)
M 14
135 Nm (99.6 ft.lbs)
190 Nm (140 ft.lbs)
230 Nm (166 ft.lbs)
M 16
210 Nm (155 ft.lbs)
290 Nm (214 ft.lbs)
350 Nm (258 ft.lbs)
M 20
410 Nm (302 ft.lbs)
580 Nm (428 ft.lbs)
690 Nm (509 ft.lbs)
Содержание VF6585
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