WORKSHOP MANUAL - lombardini service

4
Disassembly / Reassembly
E.G.R. Circuit
Disassembly:
- Disengage the control rod catch 1 with a screwdriver from the
accelerator control rod 2 (fig. 3).
- Disconnect the accelerator control rod from the accelerator
control lever 3 (fig. 3).
3
4
- Disconnect the thermovalve – vacuum pump connection pipes
(7, fig. 2) and vacuum valve – thermovalve connection pipe (8,
fig. 2) from the thermovalve (10, fig.2).
- Unscrew the two fastening screws 5 that fix the E.G.R. pipe 6 to
the E.G.R. valve 4 (fig. 4).
5
6
4
5
7
4
- Remove the intake manifold. See "Intake manifold – Remote air
filter" on page 23 (Figure 1).
- Unscrew the fastening screws of the E.G.R. pipe support
bracket 7 (fig. 5) from the engine crankcase and disengage the
E.G.R. pipe from the exhaust manifold.
Reassembly:
6
When reassembling pay attention to the repositioning of the
gaskets and to the precise connection of the pipes (6, 7, 8, 9, fig.
2).
These pipes should be carefully fitted on the appropriate
connections.
5
Tighten the screws to specified torque, see "Table of tightening
torques for the main components" on page 80.
For the calibration of the E.G.R. system see "E.G.R. calibration"
on page 77.
6
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