MTU 20 V 4000 M93 x Operating Instructions Manual page 28

HP connections
1 Jacket pipe
2 HP line
3 O-ring
4 Union nut
5 Recess for O-ring
6 Thrust ring
7 Leakage overflow bore
The HP fuel line is sealed by the thrust ring (8).
If leakage in the area of the thrust ring (8) or the HP line (5) occurs, the emerging fuel is routed to the
leakage chamber.
The leaking fuel is drained off at atmospheric pressure via the leakage overflow-bore (7). The leakage
chamber is sealed towards the outside by the O-rings (3).
This prevents the fuel from escaping to the atmosphere.
The connection is confirmed as compliant with SOLAS by DNV and GL.
28 | General Information | MS150048/04E 2013-07
8 Thrust ring
9 Union nut
10 Union nut
11 Connecting piece
12 Snap ring
13 Thrust ring
14 Compensating disks
15 Union nut
16 Thrust ring
17 Outer high-pressure line
pipe
18 Internal pipe of HP line
19 Ball-type seal area
20 Leak fuel connection