MTU 12V4000M93 series Operating Instructions Manual page 32

Tightening torques for plug screw joints as per MTN 5183-6
M10 x 1
M12 x 1.5
M14 x 1.5
M16 x 1.5
M18 x 1.5
M22 x 1.5
M27 x 2
M33 x 2
M42 x 2
M48 x 2
M60 x 2
M = tightening torques
A
Assembly instructions and tightening torque for hose fittings with union nuts
These instructions do not apply to ORFS fittings. In contrast to the instructions for pipe unions, hose fittings
with sealing heads and the matching adapters must be fitted and connected as follows.
Hose fitting, metallic sealing with union nut: tighten union nut by hand then tighten a further max. 1/4 of a
turn with a wrench.
Hose fitting with O-ring and union nut: tighten union nut by hand then tighten a further max. 1/2 of a turn
with a wrench.
Hoses must be properly aligned before tightening the union nuts.
Metric thread
M12 x 1.5
M14 x 1.5
30 | General Information | MS150047/05E 2018-08
Thread
Sealing head/sealing cone with metric union nut
screwed into
Steel/gray cast iron M
A
(Nm)
20
35
45
55
70
100
170
310
330
420
–
Pipe outer dia.
6
8
AI alloy M
A
(Nm)
10 +2
14 +2
15 +3
18 +3
23 +3
33 +4
57 +5
103 +10
110 +11
140 +14
200 +20
Torque (Nm)
20
38