Water Sprinkler System, Maintenance In The Event Of Frost; Tightening Torques For Screws With Metric Unified Thread - Bomag BW 80 AD-2 Operating Instructions, Maintenance Instructions

As required
5.33 Water sprinkler system,
maintenance in the event of
frost
Caution
!
In the event of frost the water sprinkler system
must be drained or filled with an anti-freeze
mixture respectively.
Drain all water off.
l
Switch the water sprinkler system on and let all
l
remaining water run out.
Fill the water tank with approx. 5 l of anti-
l
freeze mixture (water and anti-freeze agent,
e.g. glycol).
Run the sprinkler system, until the anti-freeze
l
mixture starts to run out from the sprinkler
tubes.
88
5.34 Tightening torques for
screws with metric unified
thread
Fig. 137
* Strength classes for screws with untreated, non-
lubricated surface. The quality designation of the
screws is stamped on the screw heads.
8.8 = 8G
10.9 = 10K
12.9 = 12K
The values result in a 90%ige utilization of the
screws yield point, at a coefficient of friction of tot.
= 0,14.
The compliance with the specified tightening tor-
ques is checked with torque wrenches.
The specified tightening torques do not apply
when using a MoS
i Note
Self locking nuts must always be replaced after
they have been unscrewed.
BOMAG
lubricant.
2
BW 80 AD-2 Fam.