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Engine - 1.25L Duratec-1 6V (Sigma)llI4L I 303-01 Am29 Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma) 303-01 A-29
IN-VEHICLE REPAIR
Connect the spark plug electrical connectors
and attach the wires to the valve cover.
3. Install the air cleaner. For additional
information, refer to Section 303-1
2 [Intake
Air Distribution and Filtering].
4. Connect the battery ground cable. For
additional information, refer to
Section 414-01 [Battery, Mounting and
Cables].
2006.0 Fiesta 1212006 GI 83729en
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Page 506 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)ll.GL Duratec-1 6V (Sigma)
IN-VEHICLE REPAIR
Valve Seals(21 238 0)
Special Tool(s)
I I Compressor, Valve Spring I
I I Adapter for 303-361
Installer, Valve Stem Collets
303-362 (2
1 - 1 56)
Adapter, Air Supply (Cylinder
Head)
303-363
(2 I -1 57)
Pliers, Valve Stem Oil
303-508 (21 -21
1 )
I Engine oil I WSS-M2C912A1 I
Materials
Removal
\\.
1. Remove the camshafts.
Name
Specification
For additional information, refer to
Camshafts in this section.
2. Remove the engine rear lifting eye.
3m ~CAUTION:K~~~ the valve tappets in order
for reassembly.
Remove the valve tappets.
4. Install the special tools.
5. Apply 7 to 10 bar of compressed air into the
cylinder.
1
6. Using the special tool, remove the valve
springs.
Compress the valve spring.
Remove the valve collets.
2006.0 Fiesta 1212006 GI 83730en
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Page 507 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
303-01A-31 Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma) 303-01 A-31
IN-VEHICLE REPAIR
Remove the valve spring retainer and the
valve springs.
7. Using the special tool, remove the valve
seals.
N0TE:lnstall new valve seals.
N0TE:Coat the valve seal lip and the valve stem
with clean engine oil.
Using the special tool, install the valve seal.
Discard the valve seals. 3. Remove the mounting sleeve.
4. Using the special tool, install the valve
springs.
lnstall the valve spring retainer and the valve
springs.
Compress the valve spring.
Install the valve collets.
Installation
1, Install a valve stem mounting sleeve over
the valve
collet groove (valve shown
removed for clarity).
*' ACAUTION:T~~ intake valve seal are
colored green, and the exhaust valve seals
are colored brown.
5. Remove the special tools.
2006.0 Fiesta 1212006 GI 83730en
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Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma)
IN-VEHICLE REPAIR
6m ACAUTION:T~~ valve tappets must be
installed in their original locations.
Install the valve tappets.
7. Install the engine rear lifting eye.
8. Install the camshafts.
For additional information, refer to
Camshafts in this section.
2006.0 Fiesta 1212006 GI 83730en
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Page 509 of 1226

Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
303-01 A-33 Duratec-1 6V (Sigma)ll.GL Duratec-1 6V (Sigma) 303-01 A-33
IN-VEHICLE REPAIR
Camshafts(21 284 0)
Special Tool(s)
Materials
Name Specification
/ 15030A
21 171
1 Sealant I WSK-M2G348-A2 I
Universal Flange Holding
Wrench
205-072
Installer, Crankshaft Seal
303-395
I Engine Oil I WSS-M2C912A1 I
3m ~AUTION:K~~~ the camshaft bearing
caps in order for
installation.
Remove the camshafts.
Slacken each camshaft bearing cap retaining
bolt in the sequence shown by one turn until
the camshaft is released.
Remove the camshaft bearing caps.
Remove and discard the camshaft
seals.
I
i Installation
Removal
1. Apply sealant to the points indicated on the
I. Remove the timing belt. camshaft bearing
cap no. 1 and to the mating
surface of the
cylinder head.
For additional information, refer to: Timing
Belt (303-01 Engine - 1.25L Duratec-1 6V
(Sigma)ll.4L Duratec-1 6V (Sigma)ll.GL
Duratec-1 6V (Sigma), In-vehicle Repair).
2m ~~~~~10N:lnstall a hose (order no.
E890438S) to the special tool studs, to
prevent damage to the camshaft
pulleys.
Remove the camshaft pulleys.
Discard the retaining bolts.
2. Coat the camshafts and the camshaft bearing
caps with
clean engine oil.
3m A~A~T10N:~osition the camshafts in place
so that none of the cams are at full lift.
N0TE:The camshaft bearing cap numbering starts
at the timing
belt end with El on the exhaust side
and with
I1 on the intake side.
N0TE:The exhaust camshaft has an additional
cam for the camshaft position (CMP) sensor.
2006.0 Fiesta 1212006 GI 83731 en
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Page 510 of 1226

Engine - 1.25L Duratec-16V (Sigma)llI4L
303-01 A-34 Duratec-1 6V (Sigma)ll .6L
Duratec-1 6V (Sigma)
303-01 A-34
IN-VEHICLE REPAIR
Install the camshafts and camshaft bearing 7. Install the timing belt.
caps.
For additional information, refer to: Timing
Tighten the camshaft bearing cap retaining Belt (303-01 Engine - 1.25L Duratec-1 6V
bolts in the sequence shown in three stages. (Sigma)ll.4L Duratec-1 6V (Sigma)ll .6L
Stage 1: One half turn on each bolt until all Duratec-1 6V (Sigma), Invehicle Repair).
of the camshaft bearing caps are in contact
with the cylinder head.
Stage
2: 7 Nm.
Stage
3: 45 degrees.
4. Adjust the valve clearances.
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).
5. NOTE:
Install new camshaft seals.
N0TE:Coat the camshaft journals and camshaft
seal lip with clean engine oil.
Using the special tool, install the camshaft
seals.
6. N0TE:Do not fully tighten the camshaft
pulley retaining bolts at this stage. Make sure
the camshaft
pulleys turn on the camshafts.
Install the camshaft pulleys.
2006.0 Fiesta 1212006 GI 83731 en
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Engine - 1.25L Duratec-1 6V (Sigma)llI4L
303-01 A-35 Duratec-1 6V (Sigma)lll6L Duratec-1 6V (Sigma) 303-01 Am35
IN-VEHICLE REPAIR
Camshaft Seal(21 288 0)
Special Tool(s) Discard the retaining bolts.
Materials
Name Specification
I Engine Oil I WSS~~C~I 2~1
3. Using the special tool, remove the camshaft
seal.
Discard the oil seal.
- -
15030A
Removal
Installation
I. Remove the timing belt. 1. N0TE:lnstall a new camshaft seal.
For additional information, refer to: Timing
Belt (303-01 Engine
- 1.25L Duratec-1 6V N0TE:Coat the camshaft journals and camshaft
(Sigma)ll.4L Duratec-1 6V (Sigma)ll .6L seal with clean engine oil.
Duratec-1 6V (Sigma), in-vehicle Repair).
Using the special tool, install the camshaft
oil seal.
*' &~~~l~~:lnstall a hose (order no.
E890438S) to the special tool studs, to
prevent damage to the camshaft pulleys.
303-395
I
21 171
Universal Flange Holding
Wrench
205-072
Remover, Crankshaft Seal
303-293
Installer, Crankshaft Seal
Remove the camshaft pulleys.
2006.0 Fiesta 1212006 GI 83732en
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Page 512 of 1226
Engine - 1.25L Duratec-1 6V (Sigma)ll.4L
303-01 A-36 Duratec-1 6V (Sigma)/l .6L
Duratec-1 6V (Sigma) 303-01 A-36
IN-VEHICLE REPAIR
2. N0TE:Do not fully tighten the camshaft
pulleys retaining bolts at this stage. Make
sure the camshaft
pulleys turn on the
camshafts.
N0TE:lnstall new camshaft pulley retaining bolts.
Install the camshaft timing pulleys.
3. Install the timing belt.
For additional information, refer to: Timing
Belt (303-01 Engine - 1.25L Duratec-16V
(Sigma)ll.4L Duratec-1 6V (Sigma)ll .6L
Duratec-1
6V (Sigma), In-vehicle Repair).
2006.0 Fiesta 1212006 GI 83732en
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