As required
BOMAG 59BPR 45/55 D, BPR 55/65 D
As r equire d
6.20 Tightening the screws
Note
i
Self locking nuts must always be replaced by new
ones after they have been unscrewed.
Fig. 76
*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.
6.21 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 anti-
corrosion engine oil.
l Change the fuel filter.
l Drain the fuel from the fuel tank, mix it well with
10% anti-corrosion oil and fill it back in. In-
stead of mixing the fuel with anti-corrosion oil
you may also fill the tank with injection pump
testing oil with anti-corrosive properties (e.g.
Calibration fluid B).
l Clean the air filter.
l Then run the engine for 10 minutes, so that
lines, filter, pump and nozzles are filled with
the conserving mixture and the new engine oil
is distributed to all parts.
l Remove the injection nozzle, spray the seat
with engine oil and reinstall the injection noz-
zle.
l Crank the engine several times to spray the
combustion chamber (throttle lever in stop po-
sition).
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 Cover the engine and stand it on a wooden
pallet.
Note
i
Depending on weather conditions these conserva-
tion measures will protect the machine for approx.
6 to 12 months.
Before taking the machine back into service you
must drain off the conservation oil and replace it
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