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64 | EPS 708 | Tightening torques
8.
Tightening torques
8.1
Fastening parts
Tightening torques based on strength class:
Thread
5.6
6.8
M 5
M 8
14 +3
M 10
M 12
M 14
90 +10
M 16
135 +10
8.2
Coupling halves
On the common rail pump camshaft
Thread
Bevel gear
diameter
M 12
M 14 x 1.5
M 18 x 1.5
M 20 x 1.5
M 24 x 1.5
M 30 x 1.5
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1 689 989 067
2017-12-08
8.8
10.9
5 +2
23 +3
32 +5
45 +8
65 +8
80 +8
125 +10
135 +10
210 +10
Tightening torque
[Nm]
17
60 +10
20
80 +10
25
130 +10
30
200 +20
35
250 +50
40
300 +50
8.3
Drive coupling
8.3.1
Drive coupling 1 686 401 024
Tightening torques [Nm]
EPS side
Pump side
8.3.2
Tightening torques for clamping screws
Size
M 8 x 65 DIN 912-12.9
M 10 x 80 DIN 912-12.9
M 12 x 80 DIN 912-12.9
8.4
Permitted coupling torques
Speed
Coupling torque:
Briefly approx. 2 min.
Continuous operation
95 +2
35 +2
Tightening torque [Nm]
15 +2
30 +2
60 +5
Unit
Specification
rpm
0 to 850
1500
2500
Nm
100
68
37.5
Nm
65
44
25
Robert Bosch GmbH