Tightening Torques; Engine Conservation - Fayat Group BOMAG BW177D-50 Operating Instructions, Maintenance Instructions

Tightening torques

BOLT TIGHTENING TORQUE
DIMENSIONS
8.8
M4
2 ft. lbs./3 N•m
M5
4 ft. lbs./6 N•m
M6
7 ft. lbs./10 N•m
M8
18 ft. lbs./25 N•m
M10
37 ft. lbs./50 N•m
M12
65 ft. lbs./88 N•m
M14
101 ft. lbs./137 N•m
M16
156 ft. lbs./211 N•m
M18
213 ft. lbs./290 N•m
M20
304 ft. lbs./412 N•m
M22
413 ft. lbs./560 N•m
M24
524 ft. lbs./711 N•m
774 ft. lbs./1050
M27
N•m
1047 ft. lbs./1420
M30
N•m
Fig. 167
* Strength classes for screws with untreated, non-
lubricated surface. Screw quality designations are
stamped on the screw heads.
8.8 = 8G
10.9 = 10K
12.9 = 12K
Axle - frame
•
M 24 = 710 Nm (649.0 ft.lbs.)
Wheel nuts
•
M 22x1.5 = 550 Nm (405.7 ft.lbs.)
The values result in a 90% utilization of the screw
yield point at a coefficient of friction μ total = 0,14.
When using lubricant MOS
torques do not apply.
NOTE: Self-locking nuts must always be replaced
once they have been unscrewed�
4-2012
FT. LBS. / N•m
10.9 12.9
3 ft. lbs./5 N•m 4 ft. lbs./5 N•m
7 ft. lbs./10 N•m 7 ft. lbs./10 N•m
11 ft. lbs./15 N•m 13 ft. lbs./18 N•m
26 ft. lbs./35 N•m 33 ft. lbs./45 N•m
55 ft. lbs./75 N•m 61 ft. lbs./83 N•m
91 ft. lbs./123 N•m 108 ft. lbs./147 N•m
145 ft. lbs./196 N•m 173 ft. lbs./235 N•m
221 ft. lbs./300 N•m 264 ft. lbs./358 N•m
303 ft. lbs./412 N•m 361 ft. lbs./490 N•m
426 ft. lbs./578 N•m 513 ft. lbs./696 N•m
559 ft. lbs./785 N•m 695 ft. lbs./942 N•m
738 ft. lbs./1000 885 ft. lbs./1200
N•m N•m
1092 ft. lbs./1480 1308 ft. lbs./1774
N•m N•m
1482 ft. lbs./2010 1770 ft. lbs./2400
N•m N•m
the specified tightening
2
MAINTENANCE

Engine conservation

If the engine is to be shut down for a longer period of
time (e.g. over winter), we recommend to apply the
following conserving measures to avoid corrosion:
Clean the engine, including the cooling system:
•
With cold cleansing agent and a water jet or,
even better, with a steam cleaner.
Run the engine warm and shut it down.
•
Drain off the still hot engine oil and fill in anti-
•
corrosion engine oil.
Drain off the coolant and fill in system protection
•
agent.
Drain the fuel from the tank, mix it well with 10%
•
anti-corrosion oil and fill it back in.
Run the engine for 10 minutes until all lines,
•
filters, pumps and nozzles with this conserving
mixture and the new engine oil has been
distributed to all parts.
Now crank the engine several times (without
•
ignition) to spray the combustion chambers.
Take the V-belts off and spray the grooves of the
•
V-belts with anti-corrosion oil. Remove the anti-
corrosion oil before resuming operation.
Close intake and exhaust openings tightly.
•
NOTE: depending on the weather conditions
these con-serving measures will provide
protection for approx� 6 to 12 months�
Before taking the engine back into
operation all conserving oil must be
drained off and replaced by regular
engine oil, see chapter "Fuels and
Lubricants" according to the APi-(miL)-
classification�
Anti-corrosion oils are those that comply with the
specification miL-L-21260 B or TL 9150-037/2 or Nato
Code C 640/642�
A machine with a conserved engine must be marked
by attaching a clearly visible warning tag�
Section 5
5-49