Arteon 2018 ➤, Arteon 2021 ➤, Arteon Shooting Brake 2021 ➤, Golf 2013 ➤, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
15 – Cylinder head, valve gear
1
Cylinder head
⇒ a1.2 nd installing cylinder head”, page 145
⇒ a1.3 nd installing vacuum pump”, page 152
⇒ c1.4 ompression”, page 154
1.1
Assembly overview - cylinder head
Note
♦ Renew cylinder head bolts.
♦ Always renew self-locking nuts, bolts which have been tight‐
ened with turning further angle, as well as oil seals and
gaskets.
♦ The plastic protectors fitted to protect the open valves must
only be removed immediately before fitting the cylinder
head.
♦ After fitting a new cylinder head or cylinder head gasket, the
engine oil and coolant must be changed.
142
Rep. gr.15 - Cylinder head, valve gear
Arteon 2018 ➤, Arteon 2021 ➤, Arteon Shooting Brake 2021 ➤, Golf 2013 ➤, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
1 - Dowel pin
2 - Cylinder head gasket
❑ Renew
❑ Observe installation po‐
sition: Part number to
cylinder head
3 - Cylinder head
❑ Removing and instal‐
ling ⇒ page 145
❑ Check for distortion ⇒
page 145 .
4 - Bolt
❑ Renew
❑ Note procedure when
loosening ⇒ page 144 .
❑ Note procedure when
tightening ⇒ page 144 .
❑ 8 Nm +90° further
5 - Heat shield
6 - Bolt
❑ 9 Nm
7 - Bolt
❑ 9 Nm
8 - Heat shield
9 - Bolt
❑ 9 Nm
10 - Bolt
❑ 9 Nm
11 - Union
❑ For coolant hose
12 - O-ring
❑ Renew
❑ Moisten with coolant
13 - Cylinder head bolt
❑ Renew
❑ Note procedure when loosening ⇒ page 144 .
❑ Note procedure when tightening ⇒ page 144 .
14 - O-ring
❑ Renew
❑ Moisten with coolant
15 - Union
❑ For coolant hose
16 - Bolt
❑ 9 Nm
17 - Support
❑ For engine cover panel
18 - Engine lifting eye
19 - Bolt
1. Cylinder head
143
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4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
❑ Renew
❑ 8 Nm +90°
20 - Partition
21 - Support
❑ For engine cover panel
22 - Engine lifting eye
23 - Bolt
❑ Renew
❑ 8 Nm +90°
24 - Dowel pin
Loosening cylinder head bolts
– Unscrew bolts -arrows-.
– Loosen cylinder head bolts in the sequence -1 … 10-.
Tightening sequence for cylinder head
– Tighten cylinder head bolts in the sequence -1 … 10- as
follows:
Stage
Bolts
Specified torques/angle specifica‐
tions
1
2
3
4
5
6
-1 to 10-
-1 to 10-
-1 to 10-
-1 to 10-
-Arrows-
-Arrows-
Screw in by hand as far as stop
50 Nm
Turn 90° further
Turn 90° further
8 Nm
Turn 90° further
144
Rep. gr.15 - Cylinder head, valve gear
Arteon 2018 ➤, Arteon 2021 ➤, Arteon Shooting Brake 2021 ➤, Golf 2013 ➤, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
Checking cylinder head for distortion
– Use straight edge 500 mm -VAS 6075- and feeler gauge to
measure cylinder head for distortion at several points.
♦ Max. permissible distortion: 0.05 mm
1.2
Removing and installing cylinder head
Special tools and workshop equipment required
♦ Engine bung set -VAS 6122-
♦ Standard blade scraper (blade width min. 40 mm)
Removing
Note
♦ Before the cylinder head is removed, the engine support and
engine mounting must be reinstalled temporarily, because
the eyes of the support bracket are secured to the cylinder
head.
♦ Fit the cable ties in the original position when installing.
♦ Seal open channels of intake and exhaust system with suita‐
ble plugs from engine bung set -VAS 6122-.
♦ Cover the openings in the gearbox with a cloth to prevent
any coolant from getting into the clutch housing.
– Remove air filter housing ⇒ page 443 .
– Unscrew bolt -arrow- on left and right.
1. Cylinder head
145
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4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
– Unclip lower part of air duct -1- and remove it.
– Remove camshafts ⇒ page 199 .
– Reinstall engine support and engine mounting, and tighten
bolts by hand.
– Detach spindles of support bracket -10 - 222 A-.
– Drain coolant ⇒ page 278 .
– Remove front exhaust pipe with catalytic converter ⇒ page
550 .
– Remove Lambda probe 1 before catalytic converter -GX10-
⇒ page 497 .
– Release hose clip -2- and detach right charge air hose from
charge air cooler.
– Seal open lines and connections with clean plugs from en‐
gine bung set -VAS 6122-.
– Release hose clip -2-.
146
Rep. gr.15 - Cylinder head, valve gear
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4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
– Free off coolant hose -3-.
– Unscrew bolts -arrows-.
– Unplug electrical connector -1- at charge pressure sender
-G31- and detach air pipe (right-side).
– Remove air pipe between turbocharger and charge air cool‐
er ⇒ page 410 .
– Release hose clips -arrows- and detach coolant hoses.
– Swivel coolant line -1- to side.
– Disconnect connectors:
1 - For oil pressure switch -F1-
2 - For oil pressure switch for reduced oil pressure -F378-
1. Cylinder head
147
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4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
5 - For piston cooling jet control valve -N522-
– Unscrew bolts -arrows-.
– Unscrew bolt -1- and nut -3- and remove bracket -2- for
intake manifold.
– Disconnect connectors:
1 - For throttle valve module -GX3-
2 - For intake manifold sender -GX9-.
3 - For fuel pressure sender -G247-.
– Remove connector -4- from retainer.
– Move electrical wiring harness clear and press to one side.
– Remove connector -3- for knock sensor 1 -G61- from retain‐
er and disconnect it.
148
Rep. gr.15 - Cylinder head, valve gear
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4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
– Separate electrical connectors -2, 4-.
– Separate connectors and lay wiring harnesses to one side:
1 - For intake manifold flap valve -N316-.
2 - For coolant shut-off valve -N82-.
3 - For coolant temperature sender -G62-
4 - For stage 3 oil pressure switch -F447-
– Unscrew bolts -arrows-.
– Unscrew bolts -arrows- and nut -1-.
– Remove heat shield -2-.
– Remove bolt -1- and loosen bolt -3-.
1. Cylinder head
149
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4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
– Remove bracket -2- for turbocharger.
– Unscrew nuts -arrows-.
– Detach turbocharger from cylinder head and tie up to rear.
– Unscrew bolts -arrows-.
– Unscrew cylinder head bolts in sequence -1 to 10-.
Note
Make sure all hoses/pipes and wiring are removed.
– Take off cylinder head and set it down on a soft surface
(foam plastic).
150
Rep. gr.15 - Cylinder head, valve gear
Arteon 2018 ➤, Arteon 2021 ➤, Arteon Shooting Brake 2021 ➤, Golf 2013 ➤, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
Installing
Install in reverse order of removal, observing the following:
NOTICE
Using unauthorised sanding or abrasive media may lead to
secondary damage such as, for example, damage to the tur‐
bocharger or the conrod bearings.
– Do not use sandpaper, grinding wheels, abrasive or scour
pads or any other sanding or abrasive media.
– Sealing surface (see fig.) must not project.
– Discolouration (dark spots, see fig.) do not need to be
removed.
– When removing the sealant residue, make sure no loose
particles get into the open channels of the engine.
– Ensure that all adjacent workspaces are clean, and that
none of the above mentioned sanding or abrasive media
are used.
– Do not use any other means rather than a standard blade
scraper to remove the sealant residue from the cylinder
head and cylinder block.
Only use the blade scraper at a flat angle and with care; the
sealing surfaces must not be damaged!
– Remove any loose remains using a lint-free cloth.
– If necessary, remove oil or coolant from the blind holes of
the cylinder head screws.
– Do not remove new cylinder head gasket from packaging
until it is ready to be fitted. The coating and the indented
area of the cylinder head gasket must not be damaged.
– Position cylinder head gasket.
– Note centring pins in cylinder block -arrows-.
1. Cylinder head
151
Arteon 2018 ➤, Arteon 2021 ➤, Arteon Shooting Brake 2021 ➤, Golf 2013 ➤, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
– Check installation position of cylinder head gasket. Charac‐
teristic: the part number should be legible from the inlet side.
– If crankshaft has been turned in the meantime, position cyl‐
inder number 1 piston to TDC and then turn crankshaft back
slightly. When doing so, ensure that timing chain is not dam‐
aged.
– Fit cylinder head.
– Insert and tighten cylinder head bolts. Tightening sequence
⇒ Fig. ““Tightening sequence for cylinder head”“, page 144
Note
♦ If a new cylinder head is installed, contact surfaces between
roller rocker fingers and running surface of cam must be
oiled.
♦ After fitting a new cylinder head or cylinder head gasket, the
engine oil and coolant must be changed.
♦ Renew bolts that are tightened with turning further angle.
♦ Renew gaskets, oil seals and self-locking nuts.
♦ Hose connections and air duct pipes must be free of oil and
grease before assembly.
♦ Secure all hose connections with the correct type of hose
clips (same as original equipment) ⇒ Electronic parts cata‐
logue (ETKA).
♦ Spray the worm screws of the used hose clips with penetrat‐
ing spray before installing.
– Install camshafts, but do not fit camshaft timing chain yet ⇒
page 207 .
– Support engine in its installation position again ⇒ page 51 .
– Removing engine mounting and engine support.
– Now, install camshaft timing chain ⇒ page 210 .
The remaining assembly steps are basically a reverse of the
dismantling procedure, when doing this note as follows:
– Change engine oil ⇒ Maintenance; Booklet ; Engine oil:
Draining; Renewing oil filter and replenishing engine oil.
– Fill with new coolant ⇒ page 278 .
Specified torques
♦ ⇒ o1.1 verview - cylinder head”, page 142
♦ ⇒ o4.1 verview – intake manifold”, page 445
♦ ⇒ o3.1 verview - coolant pipes”, page 343
♦ ⇒ o1.1 verview - turbocharger”, page 374
♦ ⇒ o1.1 verview – silencers”, page 501
1.3
Removing and installing vacuum pump
Removing:
– Remove engine cover panel ⇒ page 81 .
– Remove air filter housing ⇒ page 443 .
– Separate vacuum hose -2-.
152
Rep. gr.15 - Cylinder head, valve gear
Arteon 2018 ➤, Arteon 2021 ➤, Arteon Shooting Brake 2021 ➤, Golf 2013 ➤, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
– Press release tabs on vacuum hose -1-, and remove hose
from vacuum pump.
– Release fastener -arrow-, detach wiring duct upwards from
bracket and press forwards.
NOTICE
Risk of damage to coolant pipes caused by deformation.
– Never attempt to reshape the coolant pipe.
– Unscrew bolts -1, 2 and 3-, and carefully swivel coolant line
to one side slightly.
– Remove high-pressure pump with »roller tappet« ⇒ page
488 .
– Unscrew bolts -arrows-, and remove vacuum pump.
Note
Dismantling of the vacuum pump is not permitted.
1. Cylinder head
153
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4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
Installing:
•
Specified torques ⇒ page 197
– Clean sealing surfaces.
– Position drive lug of vacuum pump carrier so that it engages
in slot of camshaft when vacuum pump is fitted.
– Position new gasket on vacuum pump, insert 2 bolts, and fit
vacuum pump with gasket on cylinder head.
– When doing so, ensure that vacuum pump is flush with
flange.
Further assembly is basically a reverse of the dismantling se‐
quence.
1.4
Checking compression
Note
In addition to the compression test, a pressure loss test can al‐
so be performed using pressure loss tester -VAS 522 001-. The
corresponding procedure is described in the operating manual
of the pressure loss tester.
154
Rep. gr.15 - Cylinder head, valve gear
Arteon 2018 ➤, Arteon 2021 ➤, Arteon Shooting Brake 2021 ➤, Golf 2013 ➤, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
Special tools and workshop
equipment required
♦ Spark plug socket -3122 B-
♦ Compression tester -V.A.G 1763-
♦ Adapter -V.A.G 1381/1-
♦ Adapter -V.A.G 1381/5A-
Test sequence
Note
♦ Engine oil temperature min. 30°C
♦ Battery voltage at least 12.7 V
– Remove engine cover panel ⇒ page 81 .
– Release ignition coil connectors and, at the same time, pull
connectors off ignition coils.
– Unscrew ignition coil bolts, and pull out ignition coils.
– Disconnect connectors:
1. Cylinder head
155
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4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
1 - For injectors -N30- to -N33-
2 - For injectors 2 -N532- to -N535-
– Unscrew spark plugs using spark plug socket -3122 B-.
– Check compression using compression tester -V.A.G 1763-,
adapter -V.A.G 1381/1- and adapter -V.A.G 1381/5A-.
Note
Using compression tester: ⇒ Operating instructions.
– Start engine until tester shows no further pressure increase.
Compression pressures
bar
11.0 to 14.0
7.0
New
Wear limit
Maximum difference between cylinders
3.0
– Install spark plugs ⇒ Maintenance; Booklet ; Spark plugs:
Renewing.
– Install ignition coils ⇒ page 580 .
Note
Faults will have been stored in the memory because connectors
have been disconnected. Read and clear the event memory
after the measurement.
156
Rep. gr.15 - Cylinder head, valve gear
2024 VW Tiguan Owner's Manual
