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24
F1A ENGINE
5407
E.G.R. VALVE REMOVAL/REFITTING
Removal
Figure 23
Partially drain the engine coolant.
Take the full exhaust pipe off the engine and the chassis, as
described in the respective chapter.
Loosen the clamps, then disconnect coolant pipes (1 and 3)
from E.G.R. valve (7).
Disconnect vacuum pipe (6) from E.G.R. valve (7).
Remove fastening screws (5-9-10), then remove E.G.R. valve
(7), together with elbow (11), from heat exchanger (2), pipe
(8) from bracket (4).
Refitting
For refitting, reverse the operations described for
disconnection observing following warnings:
- replace gasket by new parts;
- tighten nuts and screws at prescribed torque.
- fill expansion tank with coolant.
HEAT EXCHANGER REMOVAL/REFITTING
Removal
Figure 24
Act from inside the engine compartment to take off the
cylinder head sound-proofing cover.
Disconnect cab heater coolant pipe (2) from the similar
E.G.R. valve outlet pipe (1).
Remove the nut, then take the pipe off coalescence paper
filter (3).
Base - March 2006
Remove nut (4) used for upper securing of throttle valve
assembly (5) connecting pipe (9) to heat exchanger (7).
Lower fastening nut (6) shall be removed from under the
vehicle.
Act from under the vehicle to remove the heat exchanger
supporting and engine lifting bracket (8) fastening screws.
Figure 25
108566
Take off the E.G.R. valve, as described in the respective
chapter.
Loosen connecting pipe (6) fastening nuts (5) in order to
make screws (7) able to be accessed.
Remove screws (7), then take off engine lifting bracket (8).
Remove screws (9), take pipe union (2) off the cylinder head,
then take off heat exchanger (1) together with pipes (3 and
4) and pipe union (2).
Refitting
For refitting, reverse the operations described for
disconnection observing following warnings:
- replace gasket by new parts;
- tighten nuts and screws at prescribed torque.
- fill expansion tank with coolant.
108623
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URO
108624
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