Replacing HP fuel line and pres-
sure pipe connection
1.
Remove union nuts (1, 3) on HP fuel
line (2).
2.
Remove HP fuel line (2).
3.
Remove union nut (4).
4.
Pull out pressure pipe connection (5).
5.
Coat sealing ring of new pressure pipe con-
nection (5) with assembly compound.
6.
Coat cone of pressure pipe connection (5)
with engine oil.
7.
Insert pressure pipe connection (5) into cyl-
inder head until it has contact with the
sealing ring in the cylinder head.
8.
Fully press in pressure pipe connection (5)
by hand.
9.
Insert union nut (4).
10.
Tighten union nut (4) with torque wrench to the specified tightening torque.
Name
Size
Type
Lubricant
Value/Standard
Union nut
M24
Preload torque
(Engine oil)
15 Nm +5 Nm
Union nut
M24
Tightening torque
50 Nm +5 Nm
11.
Coat mating face with engine oil between union nut and HP fuel line, end of line and thread on both
sides of the new HP fuel line (1).
12.
Install new HP fuel line (2).
13.
Tighten union nut (1) on HP fuel line (2) with torque wrench to the specified tightening torque.
a) For single-wall high-pressure fuel system
Name
Size
Type
Lubricant
Value/Standard
Union nut
M20
Tightening torque
(Engine oil)
37 Nm +3 Nm
b) For double-wall high-pressure fuel system
Name
Size
Type
Lubricant
Value/Standard
Union nut
M20
Tightening torque
(Engine oil)
50 Nm +5 Nm
MS150118/00E 2014-07
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