Fayat Group Bomag MPH 122-2, Operating & Maintenance Instructions, Page: 187 / 198

As required
BOMAG 187 MPH 122-2
6.74 Reaction water tank
*
, main-
tenance in the event of frost
Fig. 384
l
Unscrew the cover (2) (Fig. 384).
l
Open all valves and let all water run out.
Fig. 385
l
Open the drain valve on the water filter (Fig.
385) and let all water run out.
6.75 Tightening torques for
screws with metric unified
thread
Fig. 386
* Strength classes for screws with untreated, non-
lubricated surface. The screw quality is stamped
on the screw heads.
8.8 = 8G
10.9 = 10K
12.9 = 12K
The values result in a 90% utilization of the screws
yielding point at a coefficient of friction of
μ
tot. =
0,14. The tightening torques are checked with
torque wrenches. The tightening torques do not
apply when using MOs
2
lubricants.
i
Note
Self locking nuts must always be replaced after
they have been unscrewed.
* only with binder metering system