Replacing pressure pipe neck
1.
Disconnect fuel line (2).
2.
Blow out fuel line (2) with compressed air.
3.
Remove thrust screw (4).
4.
Withdraw pressure pipe neck (5).
5.
Coat sealing ring with grease and fit on new
pressure pipe neck (5).
6.
Coat the tape of the pressure pipe neck (5)
with engine oil.
7.
Insert pressure pipe neck (5) into cylinder
head until the sealing ring is in contact with
cylinder head.
8.
Fully press in pressure pipe neck (5) by hand.
9.
Tighten thrust screw (4) with torque wrench to the specified tightening torque.
Name
Size
Type
Lubricant
Value/Standard
Thrust screw
M22 x 1.5 Tightening torque
(Engine oil)
45 Nm ±2.5 Nm
10.
Loosen thrust screw (4) and tighten it again with torque wrench to the specified tightening torque.
Name
Size
Type
Lubricant
Value/Standard
Thrust screw
M22 x 1.5 Tightening torque
(Engine oil)
45 Nm ±2.5 Nm
11.
Coat the mating face between union nut and fuel line, ball seal and thread on both ends of the fuel line (2)
with engine oil.
12.
Connect fuel line (2) to injection pump and pressure pipe neck (5).
13.
Tighten union nut (1) on injection pump hand-tight.
14.
Tighten union nut (3) on pressure pipe neck (5) hand-tight.
Note:
Observe the tightening torque according to the lettering on the union nuts (1) and 3).
15.
Tighten union nuts (1) marked with "35 +3 Nm" (see arrows) with torque wrench to the specified tightening
torque.
Name
Size
Type
Lubricant
Value/Standard
Union nut
M14
Tightening torque
(Engine oil)
35 Nm +3 Nm
16.
Tighten union nuts (1) marked with "30 +3 Nm" (see arrows) with torque wrench to the specified tightening
torque.
Name
Size
Type
Lubricant
Value/Standard
Union nut
M14
Tightening torque
(Engine oil)
30 Nm +3 Nm
17.
Tighten union nuts (3) marked with "35 +3 Nm" (see arrows) with torque wrench to the specified tightening
torque.
Name
Size
Type
Lubricant
Value/Standard
Union nut
M14
Tightening torque
(Engine oil)
35 Nm +3 Nm
18.
Tighten union nuts (3) marked with "30 +3 Nm" (see arrows) with torque wrench to the specified tightening
torque.
Name
Size
Type
Lubricant
Value/Standard
Union nut
M14
Tightening torque
(Engine oil)
30 Nm +3 Nm
112 | Fuel System | MS15019/04E 2016-02
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