00-04-M184EN
GENERAL CONTROL AND ADJUSTMENT
STANDARD TIGHTENING TORQUES
Standard tightening torque to be used when not otherwise indicated in the removal and refi tting
operations:
- The following tightening torques are given for hexagon head screws without flanges and
cylinder head hexagon socket screws.
- The torques are given for a friction coeffi
cient μ = 0,20 corresponding to dry-fi tted zinc-plated
fasteners and for torque tools having a ± 20 % class C tightening torque accuracy (equivalent
to pneumatic screwdrivers).
NF E 25-030-1 Screw / Nut connection :
Tightening torque in N
•
m (
±
20%)
Ø x “coarse” pitch
Grade 8.8
Grade 10.9
Ø x “fi ne” pitch
Grade 8.8
Grade 10.9
M3 x 0,5
1
1,5
-
-
-
M4 x 0,7
2,4
3,5
-
-
-
M5 x 0,8
4,8
7,1
-
-
-
M6 x 1
8,2
12,1
-
-
-
M8 x 1,25
20
30
M8 x 1
22
32
M10 x 1,5
40
59
M10 x 1,25
43
63
M10 x 1
46
68
M12 x 1,75
69
102
M12 x 1,5
74
108
M12 x 1,25
78
115
M14 x 2
111
163
M14 x 1,5
123
181
M16 x 2
175
256
M16 x 1,5
190
279
M18 x 2,5
240
352
M18 x 1,5
279
410
M20 x 2,5
341
501
M20 x 1,5
391
574
M22 x 2,5
470
691
M22 x 1,5
531
780
M24 x 3
588
864
M24 x 2
659
967
M27 x 3
874
1284
M27 x 2
965
1418
M30 x 3,5
1181
1735
M30 x 2
1351
1984
M33 x 3,5
1614
2371
M33 x 2
1821
2674
M36 x 4
2068
3037
-
-
-
b
For hexagon screws with fl anges:
Apply an increased torque of +10%.
(Standard NF E 25-030-1)
b
Where washers are used, the following coeffi
cient is to be applied (FD E 25-502) :
- Smooth tapered washer (CL): +5%
- Spring (or Grower) washer without jaws (W) : +10%
- Conical, internal teeth (CDJ-JZC) : +15%
(05/06/2012)
00
2
00
Summary of Contents for MHT 10225
Page 4: ...GENERAL INSTRUCTIONS AND SAFETY NOTICE GENERAL CONTROL AND ADJUSTMENT GENERAL 00...
Page 5: ......
Page 12: ...00 04 M184EN GENERAL CONTROL AND ADJUSTMENT pages STANDARD TIGHTENING TORQUES 2 05 06 2012 00...
Page 15: ......
Page 16: ...05 06 2012 10 03 M184EN 10 ENGINE COMPONENTS LOCATION page MERCEDES ENGINE 2...
Page 19: ...05 06 2012 10 03 M184EN 10 4 ENGINE COMPONENTS LOCATION...
Page 47: ...05 06 2012 10 06 M184EN 10 26 ENGINE REMOVAL...
Page 73: ......
Page 79: ...06 03 2012 110 01 M184EN 110 6 OPTIONS ATTACHMENTS CHARACTERISTICS AND SPECIFICATIONS...
Page 81: ...07 03 2012 110 03 M184EN 110 2 OPTIONS ATTACHMENTS COMPONENTS LOCATION...
Page 89: ...110 07 03 2012 110 03 M184EN 10 OPTIONS ATTACHMENTS COMPONENTS LOCATION...
Page 101: ......
Page 103: ...06 06 2012 20 02 M184EN 20 2 TRANSMISSION SCHEMATIC DIAGRAMS...