As required
BOMAG 59BPR 35/60
As r equire d
6.22 Tightening the screws
Note
i
Self locking nuts must always be replaced by new
ones after they have been unscrewed.
Fig. 82
*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
2
lubricants.
6.23 Engine conservation
If the engine is to be shut down for a longer period
of time (e.g. over winter), we recommend the fol-
lowing measures to avoid corrosion:
l Clean the engine: For this purpose use cold
cleansing agent or, even better, a steam
cleaner.
l Run the engine warm and shut it down.
l Drain the still warm engine oil and fill in fresh
engine oil.
Danger!
Fire hazard!
Gasoline is easily inflammable, do not spill.
When working on the fuel system do not use
open fire, do not smoke.
l Close the fuel cock.
l Remove and empty the fuel sludge filter.
l Open the fuel tap and let the fuel run out into a
suitable vessel.
l Reassemble the fuel sludge filter and tighten it
correctly.
l Drain the carburettor by slackening the drain
plug.
l Unscrew the spark plug and fil approx. 1 table
spoon full of clean engine oil into the cylinder.
Crank the engine several times and turn the
spark plug back in.
l Set the piston to top dead centre position of
the compression stroke; intake and exhaust
valves are closed.
l Take the V-belt off and spray the grooves of
the V-belt pulleys with anti-corrosion oil. Re-
move the anti-corrosion oil before taking the
machine back into service.
l Close air intake on air filter and exhaust open-
ing tightly.
l On machines with electric starter remove the
battery and recharge it once every month.
l Cover the engine and stand it on a wooden
pallet.
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