Page 527 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)ll14L
Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma)
IN-VEHICLE REPAIR
7. Using the special tools, raise the engine. 10. Attach the coolant expansion tank to the
bracket.
,
8. N0TE:lnstall new engine front mount
retaining nuts.
11. Attach the power steering fluid reservoir to
Install the engine front mount. the
bracket.
9. Remove the special tools. 12. Attach the power steering line bracket to
the cylinder head.
2006.0 Fiesta 1212006 GI 83739en
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Page 530 of 1226

Engine - I .25L Duratec-1 6V (Sigma)llI4L
303-01 A-54 Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma)
303-01 A-54
IN-VEHICLE REPAIR
Cylinder Head(21 163 0)
1 I Socket, Cylinder Head Bolts I
Discard the gasket and the nuts. (
Removerllnstaller, Hose
Clamp
303-397 (24-003)
I 24003 1 1 5. Raise and support the vehicle.
Removal
I I 1 For additional information, refer to: Lifting
(100-02 Jacking and Lifting, Description
1. Release the fuel system pressure.
Materials
For
additional information, refer to: Fuel
System Pressure Release (31 0-00 Fuel
System - General Information, General
Procedures). and
Operation).
2. Drain the
cooling system.
For
additional information, refer to: Cooling
System Draining, Filling and Bleeding
(303-03 Engine Cooling - 1.4L
Duratorq-TDCi (DV) Diesel, General 7. Remove the exhaust manifold lower heat
Procedures). shield left-hand retaining bolts.
3. Remove the camshaft.
Name
Specification
6. Using a suitable splint or wrap support the
For
additional information, refer to:
Camshafts
(303-01 Engine - 1.25L
Duratec-1 6V (Sigma)ll.4L Duratec-1 6V
(Sigma)ll.GL Duratec-1 6V (Sigma),
In-vehicle Repair).
Engine oil I WSS-M2C912-A1
4. Detach the exhaust flexible pipe from the
catalytic converter. exhaust
flexible pipe.
8. Remove the exhaust manifold lower heat
shield right-hand retaining bolts.
2006.0 Fiesta 1212006 GI 83740en
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Page 533 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)llm6L Duratec-1 6V (Sigma)
IN-VEHICLE REPAIR
21. Using the special tool, disconnect the 24.
Disconnect the electronic ignition (El) coil
/ coolant hose from the coolant distribution electrical connector.
I I assembly.
25. Disconnect the heated oxygen
(H02S)
22. Using the special tool, detach the degas sensor electrical connector.
hose from the cylinder head.
Detach the electrical connector from the
Using the special tool, detach the degas hose bracket.
from the cylinder head.
26. Detach the power steering line bracket from
23. Disconnect the engine coolant temperature the
cylinder head.
(ECT) electrical connector.
2006.0 Fiesta 1212006 GI 83740en
procarmanuals.com
Page 534 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)llm4L
Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma)
IN-VEHICLE REPAIR
27. Remove the exhaust manifold upper heat
shield 30.
Detach the oil level indicator tube from the
intake manifold.
f
28. Detach the exhaust manifold and position
31. CAUTIONS:
it to one side. A~he cylinder head must have cooled to
Discard the nuts and the exhaust manifold below 30°C before removal.
gasket.
A~osition the cylinder head on a soft
surface.
A~emove the cylinder head bolts in the
sequence shown.
Using the special tool, remove the cylinder
-
head bolts.
Discard the cylinder head gasket.
29. Remove the timing belt rear cover (engine
shown removed for clarity).
2006.0 Fiesta 1212006 GI 83740en
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Page 535 of 1226

Engine - 1.25L Duratec-1 6V (Sigma)llI4L
303-01 A-59 Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma) 303-01 A-59
IN-VEHICLE REPAIR
installation 2. Attach the oil level indicator tube to the
intake manifold.
! ACAUTION:T~~ thickness of the new
cylinder head gasket must be the same as
that of the old one (hole marked).
N0TE:lnstall a new cylinder head gasket.
N0TE:Position the cylinder head into the two guide
sleeves.
Using the special tool, install the cylinder
head.
Tighten the cylinder head bolts in the
sequence shown in three stages.
Stagel: 15Nm.
Stage 2: 30 Nm.
Stage 3: 90 degrees. 3. Install the timing belt rear cover (engine
shown removed for clarity).
4. N0TE:lnstall a new exhaust manifold gasket
and new exhaust manifold retaining nuts.
N0TE:Do not fully tighten the nuts and bolt at this
stage.
Install the exhaust manifold.
5. Tighten the exhaust manifold upper retaining
nuts and bolt in the sequence shown in two
stages.
2006.0 Fiesta 1212006 GI 83740en
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Page 536 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)llm4L
Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma)
IN-VEHICLE REPAIR
Stage 1 : 20 Nm.
Stage2: 55 Nm.
8. Attach the power steering line bracket to the
cylinder head.
TIE0030694
6. Tighten the exhaust manifold lower retaining g, Connect the heated oxygen (H02S) sensor bolts. electrical connector.
Attach the electrical connector to the bracket.
7. Install the exhaust manifold upper heat
shield. 10. Connect the electronic ignition (El) coil
electrical connector.
2006.0 Fiesta 1212006 GI 83740en
procarmanuals.com
Page 537 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
303-01A-61 Duratec-1 6V (Sigma)/l .6L Duratec-I 6V (Sigma) 303-OIA-61
IN-VEHICLE REPAIR
11. Connect the engine coolant temperature 14.
Using the special tool, connect the coolant
/ (ECT) sensor electrical connector.
hose to the coolant distribution assembly.
12. Using the special tool, connect the degas 15.
Connect the fuel return line quick release
hose to the cylinder head. coupling.
13. Using the special tool, connect the coolant
hose to the coolant distribution assembly. For additional
information, refer to: Quick
Release Coupling (310-00 Fuel System
-
General Information, General Procedures).
16. Connect the fuel supply line quick release
coupling.
For additional information, refer to: Quick
Release Coupling (310-00 Fuel System
-
General Information, General Procedures).
2006.0 Fiesta 1212006 GI 83740en
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Page 547 of 1226
Engine - I .25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma)
REMOVAL
7. Disconnect the fuel return line quick release 10. Detach the power steering fluid reservoir
coupling. from
the bracket and position
it to one side.
i For additional information, refer to: Quick
Release Coupling
(310-00 Fuel System -
General Information, General Procedures).
8. Disconnect the fuel supply line quick release
coupling.
For additional information, refer to: Quick
Release Coupling
(310-00 Fuel System -
General Information, General Procedures).
9. Detach the fuel line and the degas line from
the intake manifold.
Remove the cable tie. 11.
Using
the special tool, disconnect the
degas hose from the cylinder head.
12. Detach the coolant expansion tank from
the bracket and position
it to one side.
2006.0 Fiesta 1212006 GI 131 63en
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