MTU 12V2000M93 - Page 26

Tightening torques for union nuts to DIN 3859-2
1 Union nut
2 Union body
3 O-ring
4 Ferrule
Union nut: On installing the ball-type union, after tightening the union nut firmly by hand (noticeable
increase in force), it should be tightened another 1/4 turn (90°) past this point.
Tightening torques for spigot unions with O-ring to ISO 6149-2
Thread
Torque (Nm) +10%
M8 x 1 10
M10 x 1 20
M12 x 1.5 35
M14 x 1.5 45
M16 x 1.5 55
M18 x 1.5 70
M20 x 1.5
1)
80
M22 x 1.5 100
26 | General Information | M015655/05E 2015-06
TIM-ID: 0000002333 - 017