Trailer Crane AHK 30/1400
Maintenance
160
02/2008
10.9 Tightening Torques
Pos : 10.47 /Kothes! N etwor k/Boeker/Wartung/Anziehdrehmomente AH K EU Böc ker ( 00985) @ 10\mod_1147693431105_1.doc @ 99179
ATTENTION! Property damage!
Bolts that loosen on their own can cause property damage. Follow the
instructions listed below:
–
Replace self-locking nuts after dismounting.
–
Check the tightening torque regularly with a torque wrench.
–
Tightening torques of threaded joints must be checked after 100 km of transport.
If necessary the bolts must be re-tightened to the required values.
Alle eingesetzten Schrauben müssen verzinkt sein. Muttern sind in selbstsichernder und
verzinkter Ausführung einzusetzen.
Drehmomente (nur für Stahl):
Bolt diameter
8.8
10.9
12.9
M10
M12
M16
M20
50 Nm
90 Nm
215 Nm
420 Nm
75 Nm
125 Nm
305 Nm
520 Nm
85 Nm
150 Nm
365 Nm
710 Nm
Wheel connection
Bolts
Torque
185/75R16C with 112x5
M12 x 1,5 ball
100 Nm
Strength class for bolts, untreated and non-lubricated surface with standard thread.
Bolt quality is marked on the bolt heads. The values equal 75% utilization of the apparent
limit of elasticity at a friction coefficient M
Ges
= 0.14.
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