Page 572 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
Duratec-I 6V (Sigma)ll .6L Duratec-I 6V (Sigma)
DISASSEMBLY
2. Remove the exhaust manifold lower heat Discard the gasket.
shield left-hand retaining bolts.
3. Remove the exhaust manifold lower heat
shield right-hand retaining bolts.
4. Remove the exhaust manifold upper heat
shield.
5. Remove the exhaust manifold.
6. Install the mounting plate to the engine.
7. Install the mounting bracket to the mounting
plate.
2006.0 Fiesta 1212006 GI 54224en
procarmanuals.com
Page 578 of 1226
Engine - 1.25L Duratec-I 6V (Sigma)ll.4L
303-OIA-I 02 Duratec-1 6V (Sigma)llm6L Duratec-1 6V (Sigma)
DISASSEMBLY
Using the special tool, remove the cylinder
head.
Discard the gasket.
39m ACAUTION:D~ not damage the coolant
pump impeller.
Remove the coolant pump.
Discard the gasket.
Discard the gasket.
41. Remove the KS.
42. Remove the the PCV cover.
40. Remove the thermostat housing.
2006.0 Fiesta iuzoos GI 54224en
procarmanuals.com
Page 579 of 1226

Engine - 1.25L Duratec-1 6V (Sigma)llm4L
303-01 A-I 03 Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma) 303-01A-I 03
DISASSEMBLY
43. Remove the oil pan retaining bolts. 46. Remove the oil pump.
Discard the gasket.
Discard the crankshaft front seal.
44m ACAUTION:~~ order to prevent damage
to the sealing surfaces, only use the
designated special tool to remove the oil
Vehicles with manual transaxle
PanmDonotuseachiselorscrewdriverfor 47. Removetheclutchdiscandpressureplate.
removal. For additional information, refer to: Clutch
N0TE:Tighten the lock nut against the oil pan and Disc and Pressure Plate (308-01 Clutch,
use several taps to release the oil pan from the Removal and Installation).
cylinder block. 48. Using the special tool, remove the flywheel.
Using the special tools, remove the oil pan.
Discard the bolts.
45. Remove the oil pump pickup pipe. Vehicles with automatic transaxle
Discard the gasket. 49. Using the special tool, remove the flexplate.
2006.0 Fiesta 1212006 GI 54224en
procarmanuals.com
Page 581 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
303-01 A-1 05 Duratec-1 6V (Sigma)/l .6L
Duratec-1 6V (Sigma) 303-01 A-1 05
DISASSEMBLY AND ASSEMBLY
OF SUBASSEMBLIES
Cylinder Head(21 165 6)
' Disassembly 5. Remove the fuel supply manifold.
I. Disconnect the temperature and manifold Discard the O-ring seals.
absolute pressure (T-MAP) sensor electrical
connector.
2. Disconnect the throttle plate control motor
(DC-ISC) electrical connector.
3. Disconnect the fuel injector electrical
connectors.
6. Remove the intake manifold.
Discard the gaskets.
7. Remove the engine rear lifting eye.
8. Remove the coolant distribution housing and
1 ~~~0001735 the ignition coil (El).
4. Remove the engine wiring harness.
2006.0 Fiesta 1212006 G202085en
procarmanuals.com
Page 582 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
303-01 A-1 06 Duratec-I 6V (Sigma)ll .6L Duratec-1 6V (Sigma)
303-01 A-I 06
DISASSEMBLY AND ASSEMBLY
OF SUBASSEMBLIES
Discard the gasket. Install the CMP sensor.
91 Remove the camshaft position (CMP) sensor. 3. NOTE: Install a new coolant distribution
Discard the O-ring seal. housing gasket.
Assembly
1. N0TE:A new cylinder head is supplied
without exhaust manifold studs.
Install the exhaust manifold studs if
necessary.
2. N0TE:lnstall a new camshaft position (CMP)
O-ring seal. Install
the coolant distribution housing and
the ignition coil (El).
4. Install the engine rear lifting eye.
5. N0TE:lnstall new intake manifold gaskets.
2006.0 Fiesta 1212006 G202085en
procarmanuals.com
Page 585 of 1226

Engine - 1.25L Duratec-1 6V (Sigma)llI4L
303-OIA-I 09 Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma)
303-01
A-I 09
ASSEMBLY
, , yl~ockin~ Tool, Timing Belt I
General Equipment
1%
I Five M8 x 20 mm studs I
I Engine hoist I
3031054
Install the crankshaft rear seal carrier.
Tensioner
303-1 054
Materials
Name Specification
3. Install the crankshaft position (CKP) sensor
I Engine Oil - 5W-30 I WSS-~2~91 3-8 bracket.
I Silicone Sealant I WSE-M4G323-A4 I
I Adhesive - Loctite 243 I WSK-M2G349-A7 I
Gasket Eliminator
Sealant
i All vehicles
High-Temperature
Grease
1. Attach the cylinder block (short block) to the
mounting stand.
ESD-M 1 C220-A
Install the special tools. 4. Install the CKP sensor.
2. N0TE:lnstall a new crankshaft rear seal Vehicles with manual transaxle carrier. 5. N0TE:lnstall new flywheel retaining bolts. N0TE:A new crankshaft rear seal carrier is
supplied with an alignment sleeve which must be Using the special tool, install the flywheel.
,removed following installation. I
'NOTE:DO not lubricate the seal lip.
Tighten the bolts in the sequence shown in
two stages.
Stage I: 30 Nm.
- --
2006.0 Fiesta 1212006 GI 54225en
procarmanuals.com
Page 586 of 1226
Engine - 1.25L Dura
303-01A-11 0 Duratec-16V (Sigma)ll.(
:ec-16V (Sigma)llm4L
L Duratec-16V (Sigma)
303-01 A-I 10
ASSEMBLY
Stage 2: 80 degrees. Stage 2: 80 degrees.
6. Install the clutch disc and pressure plate. 9. Remove the special tool from the flexplate.
For additional information, refer to: Clutch
Disc and Pressure Plate
(308-01 Clutch, All vehicles
Removal and Installation). 10. N0TE:lnstall a new oil pump gasket.
7. Remove the special tool from the flywheel.
Install the oil pump.
Vehicles with automatic transaxle
8. N0TE:lnstall new flexplate retaining bolts.
Using the special tool, install the flexplate.
Tighten the bolts in the sequence shown in
two stages.
Stage1:30Nm.
11. N0TE:lnstall a new pickup pipe gasket.
2006.0 Fiesta 1212006 GI 54225en
procarmanuals.com
Page 588 of 1226
303-01 A-I 12
Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)/lm6L Duratec-1 6V (Sigma)
ASSEMBLY
lnstall the drain plug.
lnstall the thermostat housing.
18. Install the positive crankcase ventilation 21. Install the oil pressure switch.
(PCV) cover.
Apply adhesive to the oil pressure switch
threads.
19' ~CAUTION:T~~ knock sensor (KS) cable
must not touch the cylinder head or the
PCV cover. Position the KS cable at
approximately the
10 o'clock position.
lnstall the KS.
20. N0TE:lnstall a new thermostat housing
gasket.
22' ACAUTION:D~ not damage the coolant
pump impeller.
N0TE:lnstall a new coolant pump gasket.
lnstall the coolant pump.
23, Turn the crankshaft to approximately 25
mm before top dead center (BTDC) on
cylinder number
I.
2006.0 Fiesta 1212006 GI 54225en
procarmanuals.com