Figure 37
Loosen the straps, then disconnect coolant pipes (1 and 2)
and vacuum pipe (4) from EGR valve (3).
112331
Refitting
For refitting, reverse the operations described for
removal observing following warnings:
- replace gaskets (2 and 3) and the straps with
new parts.
- tighten the screws to the specified torque
value.
- fill expansion tank with coolant.
Figure 38
108633
Place the heat exchanger/valve assembly onto a work bench,
then remove EGR valve (4) fastening screws and take EGR
valve (4) off heat exchanger (1).
Checks and tests
Start up the engine, let it run at rpm’s just a little
over idling and wait for coolant temperature to
reach the value for opening the temperature
switch, then check for no water leaks existing from
cooling circuits tubes.
Figure 39
108632
Loosen the straps, then disconnect coolant pipes (2 and 3)
from EGR valve (6). Loosen screw (7) of strap (8) joining EGR
valve (6) to pipe (9). Remove screws (4), then take heat
exchanger (1), complete with EGR valve (6), off the
overhead.
540730
EGR
HEAT
EXCHANGER
RE-
MOVAL - REFITTING
105027
Remove plug (4) from expansion tank (3).
Arrange special container under the radiator, remove plug
located on radiator right side and drain engine coolant.
Remove oil filling plug (1) and take off sound deadening cover
(2).
Disconnect electrical connection (6) from pressure switch.
Loosen clamps and disconnect coolant vent tube (5).
Remove securing screws and disconnect tank (3) from wall.
Disconnect electrical connection (7) from the level sensor
placed under tank (3).
Loosen clamps and disconnect coolant tube (8) placed under
tank (3).
Removal
Figure 40
180
F1C ENGINE
D
AILY
E
URO
4