Tightening The Screws - Fayat Group BOMAG BP 12/40 Operating Instructions Manual

As required
Fig. 58
Pull the foam rubber insert over the paper ele-
l
ment (Fig. 58).
Insert the air filter correctly and tighten the
l
wing nut.
Caution
!
If the air filter is not correctly inserted, dust
and foreign particles can enter into the air in-
take channel.
Fasten the housing cover with the wing nut.
l
52

5.22 Tightening the screws

i
Note
Self locking nuts must always be replaced by new
ones after they have been unscrewed.
Fig. 59
*Strength classes for screws with untreated, non-
lubricated surfaces. The quality designations are
stamped on the screw heads.
8.8 = 8 G
10.9 = 10 K
12.9 = 12 K
The values result in a 90% utilization of the screw's
yielding point at a coefficient of friction of μ total =
0.14.
The compliance with the tightening torques is to be
checked with torque wrenches.
The tightening torques are not applicable when us-
ing MoS lubricants.
2
BOMAG BP 12/40, BP 20/50, BP 25/50