MTU 12V4000C*5 series, Operating Instructions Manual

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Tightening torques for plug screw joints as per MTN 5183-6
Thread
screwed into
Steel/gray cast iron M
A
(Nm)
AI alloy M
A
(Nm)
M10 x 1 20 10 +2
M12 x 1.5 35 14 +2
M14 x 1.5 45 15 +3
M16 x 1.5 55 18 +3
M18 x 1.5 70 23 +3
M22 x 1.5 100 33 +4
M27 x 2 170 57 +5
M33 x 2 310 103 +10
M42 x 2 330 110 +11
M48 x 2 420 140 +14
M60 x 2 – 200 +20
M
A
= tightening torques
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.
Sealing head/sealing cone with metric union nut
Metric thread Pipe outer dia. Torque (Nm)
M12 x 1.5 6 20
M14 x 1.5 8 38
MS15041/03E 2018-08 | General Information | 33
TIM-ID: 0000002333 - 018