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303-0040 Engine System - General Information 303-00-40
GENERALPROCEDURES
Piston l nspection
- ACAUTION:D~ not use any aggressive
cleaning fluid or a wire brush to clean the
piston.
Carry out a visual inspection.
Clean the piston skirt, pin bush, ring grooves
and crown and check for wear or cracks.
If there are signs of wear on the piston skirt,
check whether the connecting rod is twisted
or bent.
2006.0 Fiesta 1212006 GI 7629en
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Page 504 of 1226

Engine - I .25L Duratec-1 6V (Sigma)llm4L
303-01 A-28 Duratec-1 6V (Sigma)llm6L Duratec-1 6V (Sigma) 303-01 A-28
IN-VEHICLE REPAIR
Valve Cover(21 141 0)
Materials 4. Remove the valve cover. (. ,
Name Specification
I Silicone grease IESE-MlC171-AA I
Removal
A WARNING:Do not smoke or carry lighted
tobacco or open flame of any type when
working on or near any fuel related
components. Highly flammable mixtures
are always present and may ignite. Failure
to follow these instructions may result
in
personal injury.
1. Disconnect the battery ground cable. For
additional information, refer to
Section
414-01 [Battery, Mounting and
Cables].
2. Remove the air cleaner. For additional
information, refer to Section
303-12 [Intake
Air Distribution and Filtering].
3. Disconnect the spark plug electrical
connectors and detach the wires from the
valve cover.
Installation
1. N0TE:Check the valve cover gasket for
damage and install a new valve cover gasket
if necessary.
N0TE:lnstall the stud bolts to positions 5 and 6.
Install the valve cover.
Tighten the bolts in the sequence shown in
three stages.
Stage 1: Tighten bolt 1 by 3 to 4 turns.
Stage 2: Tigthen bolts 1 through 13 to 3 Nm.
Stage 3: Tigthen bolts 1 through 13 to 9 Nm.
2m ACAUTION:~~~ a suitable blunt object to
avoid damage to the spark plug connector
gasket. Coat the inside of the spark plug
connector with silicone grease to depth of
5-10 mm.
- - --
2006.0 Fiesta 1212006 GI 83729en
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Page 519 of 1226

Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
303-011 Am43 Duratec-1 6V (Sigma)lII6L Duratec-I 6V (Sigma) 303-01 A-43
IN-VEHICLE REPAIR
Vehicles built 0412005 onwards 16. Remove special tool.
/ 14' AWARNING:D~ not remove the special
tool, until the timing belt is correctly
positioned. Failure to follow this instruction
may result in personal injury, or may
damage the timing belt tensioner.
Tension the timing belt.
Remove the special tool.
All vehicles
15. CAUTIONS:
( , nlnstall a hose (order no. E890438S) to
the special tool studs, to prevent damage
to the camshaft pulleys. 17.
Remove the special tool.
ADO not tighten the camshaft pulley bolts 18. N0TE:Only turn the engine in its normal
against the timing plate. direction
of rotation.
N0TE:The camshafts must remain at TDC. Turn
the engine two revolutions.
N0TE:lnstall new camshaft pulley retaining bolts. 19. Install the special tool.
Using the special tool, tighten the camshaft Carefully turn the crankshaft against the
pulleys. special tool.
20. Check the valve timing.
If necessary loosen the camshaft pulleys and
correct the camshaft alignment.
2006.0 Fiesta 1212006 GI 83738en
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Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
303-01 A-65 Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma) 303-01 A-65
IN-VEHICLE REPAIR
3. N0TE:lnstall the oil pan within ten minutes 5. N0TE:Check the oil drain plug seal for
of applying sealant and tighten the bolts damage
and install a new drain plug if
( I within a further 5 minutes. necessary.
Apply a 3-4 mm diameter bead of sealant to Install the oil drain plug.
the oil pan flange.
6. Fill the engine with engine oil.
4. N0TE:Align the oil pan flush with the
cylinder block at the transaxle end.
Install the oil pan.
Tighten the oil pan retaining bolts in the
sequence shown in two stages.
Stage
I : 10 Nm.
( I Stage2:20Nm.
Remove the studs and install retaining bolts.
2006.0 Fiesta 1212006 GI 83741 en
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Page 594 of 1226

Engine - 1.25L Duratec-I 6V (Sigma)ll.4L
303-01 A-1 18 Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma) 303-01 A-I 18
ASSEMBLY
Carefully turn the crankshaft against the
special tool.
55. Check the valve timing.
If necessary loosen the camshaft pulleys and
correct the camshaft alignment.
56. Remove the special tools.
57. Install the blanking plug.
58. Check the valve clearances, adjust if
necessary.
f:
For additional information, refer to: Valve (.
Clearance Adjustment (303-01 Engine -
1.25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)ll .6L Duratec-1 6V
(Sigma), General Procedures).
59. Using the
special tool, install the spark
plugs.
Apply grease to the spark plug threads.
60. N0TE:lnstall the stud bolts to positions 5
and 6.
Install the valve cover. (
Tighten the bolts in the sequence shown in
three stages.
Stage I : Tighten bolt 1 by 3 to 4 turns.
Stage
2: Tighten bolts I through 13 to 3 Nm.
Stage
3: Tighten bolts 1 through 13 to 9 Nm.
'Irn CAUTION: Use a suitable blunt object
to avoid damage to the spark
plug
connector gasket. Coat the inside of the
spark
plug connector with silicone grease
to a depth of 5-10 mm. C
2006.0 Fiesta 1212006 GI 54225en
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Page 610 of 1226

Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
303-01 A-I 34 Duratec-1 6V (Sigma)ll .6L Duratec-I 6V (Sigma) 303-01 A-1 34
INSTALLATION
Engine - Vehicles With: Autom
Special Tool(s)
I I Remover/lnstaller, Hose (
General Eaui~ment
1 Straight edge I
I Securing straps I
atic Transaxle
2. Check the installation depth between the
transaxle flange and the torque converter c
centering spigot.
All vehicles N0TE:Make sure the torque converter centering
spigot engages in the flexplate and the transaxle
A WARNING:Do not smoke or carry lighted engages on the engine flange dowels.
tobacco or open flame of any type when
Install the transaxle to the engine.
working on or near any fuel related
components. Highly flammable vapors are 3. Install the transaxle lower retaining bolts.
always present and may ignite. Failure to I I
Workshop table
Engine hoist
follow these instructions may result in
personal injury.
'' &AUTION:T~~ torque converter must
remain at the correct installation depth
throughout the whole installation procedure.
N0TE:The torque converter hub must engage fully
in the oil pump drive gear.
Check the installation depth of the torque
converter.
*' &AUTION:M~~~ sure that the two locating
dowels are installed.
1. Lay a straight edge on the transaxle flange. I
2006.0 Fiesta 1212006 G380459en
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Page 621 of 1226

Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
303-01 A-1 45 Duratec-1 6V (Sigma)ll .6L
Duratec-1 6V (Sigma) 303-01 A-1 45
INSTALLATION
67. Connect the fuel supply line quick release
70. Tighten the strut and spring assembly top
coupling. mount nuts on both sides.
(: , For additional information, refer to: Quick
Release Coupling (310-00 Fuel System
-
General Information, General Procedures).
68. Connect the fuel return line quick release
coupling.
For additional information, refer to: Quick
Release Coupling (310-00 Fuel System
-
General Information, General Procedures).
69. Attach the fuel line and the degas line to
the intake manifold.
Install the cable tie.
71. Connect the powertrain control module
(PCM) electrical connector.
For additional information, refer to:
Powertrain Control Module (PCM)
- 1.25L
Duratec-1 6V (Sigma)llm4L Duratec-1 6V
(Sigma)ll.GL Duratec-1 6V (Sigma) (303-14
Electronic Engine Controls, Removal and
Installation).
72, Install the air cleaner.
For additional information, refer to: Air
Cleaner
- 1.25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)ll.GL Duratec-1 6V
(Sigma) (303-1 2 Intake Air Distribution
and Filtering, Removal and Installation).
73. Install the front wheels and tires.
For additional information, refer to: Wheel
and Tire (204-04 Wheels and Tires,
Removal and lnstallation).
74. Fill the engine cooling system.
For additional information, refer to: Cooling
System Draining, Filling and Bleeding
-
1.25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)ll .6L Duratec-1 6V
(Sigma)ll.3L DuratecdV (Rocam)
(303-03A, General Procedures).
75. Check the transmission fluid level and top
up with clean automatic transmission fluid
if necessary.
For additional information, refer to:
Transmission Fluid Level Check (307-01
Automatic
Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
Transmission
(AW81-40), General
Procedures).
--
2006.0 Fiesta 1212006 G380459en
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Page 632 of 1226

303-01 B-I 0 Engine - 2.OL Duratec-HE (M14) 303-01 B-I 0 - -- --
DESCRIPTION AND OPERATION
Valve tappets Camshaft drive
Item Description
I 1 I Exhaust valve tappet I
1 2 1 Intake valve tappet I
Mechanical tappets are fitted without adjusting
shims.
Due to the special materials and the optimized
camshaft profiles, the wear in the area of the valve
gear is so minute that checking and adjustment of
the valve clearances is only necessary after the
engine has been in extensive service.
Different sizes of replacement valve tappets are
I ELE0023383
available in the event of wear or repairs to the valve ' '2
gear. Item Description
I 1 I Exhaust camshaft sprocket
1 2 I Timing chain I
1 3 1 Intake camshaft sprocket I
1 4 I ~imin~ chain guide I
1 5 1 Crankshaft sprocket I
1 6 1 Hydraulic timing chain tensioner I
1 7 1 ~imin~ chain tensioner arm 1 - -
The camshafts are driven by a low-noise,
maintenance-free pinned link timing chain.
The timing chain is lubricated by the engine oil
circuit.
An elongated timing chain guide and a timing chain
tensioner arm ensure optimum timing chain
guidance and silent running.
The timing chain is tensioned by a hydraulic timing
chain tensioner which is supplied from the engine
,.
oil circuit.
The timing chain tensioner can be used again after
removal.
The camshaft drive requires no maintenance.
2006.0 Fiesta 1212006 G461395en
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