7 Maintenance and care
102 TW85
Checking secure fastening
When mounting for the first time, the
screws must again be checked after 100
operating hours.
The following points are prerequisites for an
optimum bolted connection on the undercarriage
and the uppercarriage:
• The contact faces of bolts must be of bright
metal, i.e. absolutely free from grease and
paint.
• The thread and the bolt head - particularly the
toothing - shall not be damaged.
Damaged screws must be replaced by
new ones!
• All accessible screws must be examined to
ensure that they are tightened to the torques
specified in figure 91.
HM32-091-N
M
A
= 72 Nm
M
A
= 195 Nm
M
A
= 325 Nm
M
A
= 325 Nm
Fig. 91 Tightening torques
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