16
Tightening torques
Groups 20–21
Nm
kpm
Cylinder heads (see note 1)
Main bearings ...........................
340
±
25
34.0
±
2.5
Big-end bearings .......................
(see note 2)
Intermediate gear bearings........
60
6.0
Flywheel ...................................
185
18.5
Pulley, crankshaft .....................
60
±
6
6.0
±
0.6
Flywheel casing ........................
140
±
15
14.0
±
1.5
Drive gear, injection pump
drive with 6 bolts .................
33
±
4
3.3
±
0.4
Drive gear, camshaft .................
60
±
5
6.0
±
0.5
Cleansing plugs, cylinder block
60
±
10
6.0
±
1
cylinder head .
20
±
5
2.0
±
0.5
Centre bolt, crankshaft ..............
560
±
30
56.0
±
3
Centre bolt,
with torque converter ...........
140
14.0
Vibration damper flange ...........
60
±
6
6.0
±
0.6
Front sealing ring ......................
60
±
6
6.0
±
0.6
Timing gear casing ...................
40
±
4
4.0
±
0.4
Timing gear cover .....................
50
±
5
5.0
±
0.5
Engine mounts ..........................
80
8.0
Bearing brackets, rocker
arm shaft ..............................
40
±
4
4.0
±
0.4
Thrust washer, camshaft ...........
40
±
4
4.0
±
0.4
Axial journalling,camshaft .......
40
±
4
4.0
±
0.4
Group 22
Nm
kpm
Bracket, oil pump .....................
40
±
4
4.0
±
0.4
Intermediate gear, oil pump ......
17
±
2
1.7
±
0.2
Sump .........................................
18
±
2
1.8
±
0.2
Sump cover ...............................
24
±
2
2.4
±
0.2
Drain plug, sump ......................
60
±
15
6.0
±
1.5
Groups 23–25
Pressure valve stand,
injection pump .....................
85
±
5
8.5
±
0.5
Nut for retainer, injectors..........
45
±
5
4.5
±
0.5
Clamp bolt, injection pump
M11 .....................................
90
±
5
9.0
±
0.5
M12 .....................................
114
±
10
11.4
±
1.0
Laminate screw, injection pump
M10 .....................................
62
±
5
6.2
±
0.5
Retaining bolt, injection pump .
40
±
4
4.0
±
0.4
Drive, injeciton timer ................
33
±
4
3.3
±
0.4
Turbocompressor thrust
bearings ...............................
4.5
0.45
Turbocompressor wheel ...........
17.0
1.7
Turbocompressor turbine
housing ................................
13.6
1.4
Turbocompressor housing ........
5.7
0.6
Exhaust-pressure governor .......
10–11
1.0–1.1
Intercooler bearers ....................
20
±
2
2.0
±
0.2
Notes:
1 Tightening sequence for cylinder head bolts
Clean the contact face for the cylinder head bolts prior to fitting
the bolts. Dip the bolts entirely (incl. bolt heads) in rustproofing
art. no. 1161346-0. The bolts should be drip-free before fitting.
Tighten the cylinder head bolts evenly and unhurriedly accord-
ing to the following stages and torques:
4-stage tightening and torques.
1st stage 50 Nm (5 kpm).
2nd stage 200 Nm (20 kpm).
3rd stage 370 Nm (37 kpm).
Final stage (angle tightening) 90
°
.
2 Tightening sequence for connecting-rod bearings
Tighten the connecting-rod bearings in 3 stages.
1st stage 40 Nm (4 kpm).
2nd stage 75 Nm (7.5 kpm).
Final stage (angle tightening) 90
°
.
2
4
3
1
+10
–5
+5
–10
+1.0
–0.5
+0.5
–0.1
+50
–20
+5.0
–2.0
