|
1.Clean the area around the
suction control valve with a cleaner, etc.
|
|
2.
caution |
Pay attention not to let
foreign materials get into the supply
pump during and after the suction control valve
removal.
|
Loosen the suction control valve mounting bolts, and
remove the suction control valve
from the supply pump.
|
![](../../../img/11/AC901507AB00ENG.png)
|
Using special tool fuel injection
pipe wrench (MB992188), remove the fuel injection pipe
No.1 to No.4.
|
![](../../../img/11/AK500705AA00ENG.png)
|
1.Temporarily tighten the
fuel return pipe with bolts. 2.Tighten to the
specified torque of 17 ± 2 N·m the eye bolt and
the
fuel return gasket located at the cylinder head
side.
|
![](../../../img/11/AK500706AB00ENG.png)
|
3.Temporarily tighten the
common rail with bolts, holding the common rail
body.
note |
At this time, do not hold the
pressure limiter or pressure sensor of the
common rail.
|
note |
Before the installation,
confirm there is neither foreign material nor a
rust on the threads
and the sealing surface of a high-pressure
pipe.
|
4.Align the fuel injection pipe centre axis
with the other side components (fuel injector
assembly and common rail assembly) centre axis to install
the fuel injection pipe. Then, tighten
the flare nut temporarily until the tip of pipe (seal
surface) contacts with the other side
components.
note |
When the fuel injection pipe
is installed, tighten the flare nut while
shaking the pipe
lightly to align the centre axis of both
components.
|
|
![](../../../img/11/AK600656AB00ENG.png)
|
5.In the same manner as
removal, use special tool fuel injection pipe wrench
(MB992188),
install injection pipe No.1 to No.4. Tighten to the
specified torque of 35 ± 5 N·m the flare nuts of
the
fuel injection pipe No.1 to No.4 at injector side.
|
![](../../../img/11/AK600668AB00ENG.png)
|
6.In the same manner as
removal, use special tool fuel injection pipe wrench
(MB992188),
install injection pipe No.1 to No.4. Tighten to the
specified torque of 35 ± 5 N·m the flare nuts of
the
fuel injection pipe No.1 to No.4 at common rail
side. 7.Tighten the common rail to the specified
torque of 24 ± 4 N·m. 8.Tighten to the
specified torque of 20 ± 2 N·m the eye bolt and
the
fuel return gasket located at the common rail
side. 9.Tighten the fuel return pipe to the
specified torque of 10 ± 2
N·m. 10.Tighten to the specified torque of
10 ± 2 N·m the bolts of the fuel
injection pipe No.1 to No.4.
|
|
1.Align the fuel supply pump
pipe centre axis with the other side components (common
rail assembly and supply pump assembly) centre axis to
install the fuel supply pump pipe. Then,
tighten the flare nut temporarily until the tip of pipe
(seal surface) contacts with the other
side components.
note |
When the fuel supply pump pipe
is installed, tighten the flare nut while
shaking the pipe
lightly to align the centre axis of both
components.
|
|
|
2.Temporarily tighten the
supply pump with bolts.
|
|
3.Temporarily tighten the
fuel supply pump pipe flare nuts.
|
|
4.Tighten to the specified
torque of 35 ± 5 N·m the flare nuts of the
fuel supply pump pipe together with the supply pump and
common rail.
|
|
5.Tighten the supply pump to
the specified torque of 24 ± 4 N·m.
|
![](../../../img/11/AK801189AB00ENG.png)
|
6.Tighten the EGR cooler to
the specified torque of 24 ± 3 N·m.
note |
The arrow position shown in
the illustration is tightened together with the
fuel supply
pump pipe bracket.
|
|
![](../../../img/11/AK801190AB00ENG.png)
|
7.Tighten the EGR cooler
bracket to the specified torque of 24 ± 3
N·m. 8.Tighten to the specified torque of 10
± 2 N·m the installation fuel
supply pump pipe bolts together with the fuel supply pump
pipe bracket.
|
![](../../../img/11/AC704546AB00ENG.png)
|
1.
caution |
- Pay attention not to
let the suction control valve be
contaminated with foreign material when
installing it.
- Pay attention not to let foreign
materials get into the supply pump
during the suction
control valve installation.
|
Apply a drop of new engine oil to the O-ring in the
supply pump groove, and insert the
suction control valve by hands until it contacts with the
supply pump. When inserting the suction
control valve, make sure that the suction control valve
connector is in the direction shown
in the figure. 2.
caution |
Tighten the two suction
control valve mounting bolts evenly.
|
Tighten the suction control valve mounting bolts to
the specified torque. Tightening torque: 8.9
± 1.9 N·m
|