DOCUMENT NUMBER:
L500-912.820 ISSUE JUL 20, 2016
AMENDMENT: 00
DATE: --
CHAPTER-
PAGE 6-15
MAINTENANCE MANUAL STEMME S12
6.7 DRAINAGE AND VENTILATION HOLES
The following position plan shows positions of the drains and ventilation holes (except for propeller).
Any drains and ventilation bores should be checked for blockage during any scheduled inspection.
Figure: 6.7.a.
Positions of Drainage and Ventilation Holes
6.8 TIGHTENING TORQUES OF SCREWED JOINTS
The tightening torques listed below applies to hexagon nuts, hexagon bolts and hexagon socket
screws of quality class 8.8 or higher:
Thread
Tightening Torque
Non-self-locking connection
Self-locking connection
[Nm]
[lbf ft]
[Nm]
[lbf ft]
M4
1.8
+10%
1.33
+10%
2.7
-10%
2.0
-10%
M5
3.6
+10%
2.65
+10%
5.2
-10%
3.8
-10%
M6
6.4
+10%
4.72
+10%
9.4
-10%
6.9
-10%
M8
16
+10%
11.8
+10%
22
-10%
16
-10%
M10
32
+10%
23.6
+10%
42
-10%
31
-10%
M12
57
+10%
42.0
+10%
72
-10%
53
-10%
M14
92
+10%
67.8
+10%
115
-10%
85
-10%
The above tightening torques are reduced by 25% if Loctite® or lubricated bolted joints are used.
CAUTION
Deviations from the standard tightening torque can be found also for some assemblies in
chapter »7«.
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