Remove/install cylinder head cover · ar0120p5014mrd · Mercedes-Benz WIS

AR01.20-P-5014MRD

Remove/install cylinder head cover

18.02.2020

Engine	274.9 in model 213
Engine	274.9 in model 238

Modification notes

05.08.2019	Information document AH00.00-P-0500-01MNE, added.	Operation step 21.
05.08.2019	Information document AH05.20-P-1000-09SZ, added.	Operation step 27.
30.01.2020	Water-cooled charge air cooler bracket screw at cylinder head cover/cylinder head/chain case cover		BA09.41-P-1003-01U

Shown on ENGINE 274.910 in MODEL 213

1	Air cleaner housing
2	Cap
3	Fuel high-pressure pump
4	Oil separator
5	Coolant vent line
6	Cylinder head cover
7	Bracket
8	Top slide rail
9	Front cover
10	Rail
11	Coolant vent line

P01.20-2353-06

 Warning	Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.	Wear protective gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
 Danger	Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contactwith fuel.	No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only. Wear protective clothing when handling fuel.	AS47.00-Z-0001-01A
 Caution	Risk of injury caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
 Caution	Risk of injury to skin and eyes due to handling of engine oil. Risk of poisoning caused by swallowing engine oil	Wear protective gloves, protective clothing and safety glasses. Do not fill engine oil into beverage containers.	AS18.00-Z-0001-01A
Topical note	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
Topical note	Notes on threaded connections fastened using a tightening angle-based tightening process		AH00.00-P-0020-01A
Topical note	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
Topical note	Notes on threaded connections with aluminum screws/bolts		AH00.00-P-0006-01RM
	Note on calculation of tightening torque when using insertion or socket tools with various effective lengths		AH00.00-P-0015-01CW
	General information on work on gasoline direct injection system		AH07.00-P-2000-01A
 	Remove/install
1	Drain off coolant.		AR20.00-P-1142OLC
		 Installation: Only install lower engine compartment paneling after leak test.
2	Remove soundproofing.	Engine 274.9 in model 213 except code 920 (Direct petrol injection with stratified charging) Engine 274.9 in model 238 except code 920 (Direct petrol injection with stratified charging)
			AR94.30-P-5410MRD
		 Installation: Install soundproofing only after the leak test.
3	Place coolant bleed line (5) to one side.
4	Remove charge air cooler.		AR09.41-P-0105MRD
		 Installation: Only install upper engine cover after the leak test.
5	Remove ME-SFI [ME] control unit (N3/10).		AR07.08-P-7013MRD
6	Remove bracket of the charge air cooler.	 Screw, water-cooled charge air cooler holder to cylinder head cover/cylinder head/chain case cover	*BA09.41-P-1003-01U
7	Remove front cover (9).		AR01.30-P-5700MRD
8	Remove high-pressure fuel pump (3).		AR07.02-P-1028MRD
9	Remove rail (10) with fuel injectors.		AR07.03-P-1052MRD
10	Remove air filter housing(1).		AR09.10-P-1150MRD
11	Remove front bracket of the air filter housing (1).	 M81.25	*BA00.10-P-1005-04A
12	Remove rear right engine lifting lug and place to one side.	 Bolt, lifting eye to cylinder head/cylinder head cover	*BA01.30-P-1008-01Y
13	Remove ignition coils.		AR15.12-P-2003MRD
14	Remove valve lift changeover actuator.	Engine 274.910 in model 213
			AR05.20-P-6500MRA
15	Remove oil separator (4) from the cylinder head cover (6) and place to one side.	Engine 274.9 in model 213 except code 494 (US version) except code 945 (China Stage 6 exhaust treatment) Engine 274.9 in model 238 except code 945 (China Stage 6 exhaust treatment)	AR01.20-P-9691MRD
		Engine 274.9 in model 213 with code 494 (US version)	AR01.20-P-9691MRU
16	Remove coolant bleed line (11) from the cylinder head cover (6), unclip from the brackets, and place to one side.	 Hose clamp pliers	*003589033700
17	Disconnect engine wiring harness.		AR15.18-P-1000-04MRD
		 M61	*BA00.10-P-1002-04A
18	Remove the vacuum pump.		AR43.05-P-1320MRD
19	Remove cap (2).	 Installation: Replace cap (2).
20	Loosen screws of cylinder head cover (6) in reverse order to tightening procedure and remove.		AR01.20-P-5014-03MR
		 Installation: Replace screw/bolts. Observe tightening procedure for cylinder head cover (6).
		 Screw/bolt, cylinder head cover to cylinder head	*BA01.20-P-1001-01R
21	Remove cylinder head cover (6) from the cylinder head.
	Notes on application of flange sealants to seal major assemblies		AH00.00-P-0500-01MNE
	Notes on sealant path for cylinder head cover		AH01.30-P-1000-08MM
		 Do not hammer in a tool to pry off between cylinder head cover (6) and cylinder head. Otherwise, damage to the sealing surfaces can occur.
		 Cylinder head cover (6) and cylinder head must be replaced together.
		 Use puller screw if necessary.
		 Installation: Install new sealing rings.
		 Installation: Apply sealant to cylinder head cover (6).
		Sealant, Loctite 5970, 50 ml	*BR00.45-Z-1013-01A
		 Application gun	*112589002500
22	Remove brackets (7) of the engine cover.	When installing new cylinder head cover (6).
23	Remove Hall sensors of the camshafts.	When installing new cylinder head cover (6).
			AR15.10-P-1999MRD
24	Remove top slide rail (8).	When installing new cylinder head cover (6).
			AR05.10-P-8480MRD
25	Remove oil filler cap with molded seal.	When installing new cylinder head cover (6).
	Check
26	Check top slide rail (8) of the timing chain for galling and score marks.		AR05.10-P-8480MRD
		If galling and score marks are present,
		
		Replace upper slide rail (8).
27	Check camshaft bearing points in the cylinder head cover (6), cylinder head, and on the camshafts for galling and score marks.
	General information on checking camshafts and bearing points of camshafts		AH05.20-P-1000-09SZ
		If galling and score marks are present,
		
		replace cylinder head cover (6), cylinder head, and camshafts.
		Replace cylinder head	AR01.30-P-5800MRD
		Replace camshafts	AR05.20-P-6992MRD
	Clean
28	Clean sealing surfaces on cylinder head and cylinder head cover (6).		AR01.00-P-0050-01A
		 Do not use any sharp-edged tools or abrasive paper. Otherwise, damage to the sealing surfaces can occur.
		Loctite 7063 (400 ml) cleaning spray	*BR00.45-Z-1046-04A
		Loctite 7200	*BR00.45-Z-1038-04A
29	Install in the reverse order.
 Warning	Risk of burn injuries, suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning caused by skin contact with solid components of the exhaust.	Wear protective clothing and safety glasses. Use the extraction system. Move people out of the hazard area.	AS49.00-Z-0001-01A
 Warning	Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
30	Carry out engine test run and check engine for proper leak tightness and leak tightness.

 Metric screws/bolts and nuts as per MBN 10 105, 10 143

Number	Designation		8.8	10.9
BA00.10-P-1002-04A	M61	Nm	9	13

 Metric screws/bolts and nuts as per MBN 10 105, 10 143

Number	Designation		8.8	10.9
BA00.10-P-1005-04A	M81.25	Nm	22	32

 Crankcase ventilation system, cylinder head cover, camshaft housing

Number	Designation			Engine 274
BA01.20-P-1001-01R	Screw/bolt, cylinder head cover to cylinder head	Stage 1	Nm	10
		Stage 2	°	90

 Cylinder head

Number	Designation			Engine 274
BA01.30-P-1008-01Y	Bolt, lifting eye to cylinder head/cylinder head cover	M8	Nm	20

 Charge air pipe/charge air cooling

Number	Designation		Engine 274
BA09.41-P-1003-01U	Screw, water-cooled charge air cooler holder to cylinder head cover/cylinder head/chain case cover	Nm	8

003 589 03 37 00

Hose clamp pliers

112 589 00 25 00

Application gun

Repair materials

Number	Designation	Order number
BR00.45-Z-1013-01A	Sealant, Loctite 5970, 50 ml	A 003 989 98 20 10
BR00.45-Z-1038-04A	Loctite 7200	Henkel AG & Co. KGaA http://www.loctite.de
BR00.45-Z-1046-04A	Loctite 7063 (400 ml) cleaning spray	A 001 986 71 71 09

Documente menționate

ah0000p000601rm Indicaţii privind îmbinările filetate cu şuruburi din aluminiu
ah0000p001501cw Indicaţie pentru calcularea cuplului de strângere la utilizarea de scule introduse cu diverse lungimi utile
ah0000p002001a Indicaţii referitoare la îmbinările filetate, care au fost realizate conform procedeului de strângere în funcţie de unghiul de rotire
ah0000p050001mne Indicaţii privind aplicarea pastei de etanşare a suprafeţelor pentru etanşarea de agregate
ah0000p500001a Indicaţii pentru evitarea defecţiunilor din cauza impurităţilor şi corpurilor străine
ah0130p100008mm Indicaţii pentru traseul substanţei de etanşare capac chiulasă
ah0520p100009sz indicaţii generale pentru verificarea de axe cu came şi locaşe de lagăr ale axelor cu came
ah0700p200001a Indicaţii generale pentru lucrări la injecţia directă pe benzină
ah0700p200001a
ah5400p000101a Indicaţii pentru evitarea defectării componentelor electronice prin descărcare electrostatică
ar0100p005001a Îndepărtaţi pasta de etanşare
ar0120p501403mr Schemă de strângere capac chiulasă
ar0120p9691mrd
ar0120p9691mru Demontare, montare separator ulei la capac chiulasă
ar0130p5700mrd
ar0130p5800mrd
ar0510p8480mrd
ar0520p6500mra Demontarea, montarea elementului de reglare inversare cursă supapă
ar0520p6992mrd
ar0702p1028mrd
ar0703p1052mrd
ar0708p7013mrd
ar0910p1150mrd
ar0941p0105mrd
ar1510p1999mrd
ar1512p2003mrd
ar1518p100004mrd
ar2000p1142olc
ar2000p1142olc
ar4305p1320mrd
ar9430p5410mrd
as0000z000201a Pericol de rănire la piele şi ochi prin manipulare cu obiecte fierbinţi sau incandescente
as0000z000501a Pericol de accident prin pornirea de pe loc cu motorul aflat în funcţionare. Pericol de rănire prin striviri şi arsuri la manipularea în timpul pornirii motorului sau cu motorul aflat în funcţionare
as0000z001701a Pericol de rănire prin tăieturi respectiv zgârieturi provocate de componentele cu muchii ascuţite ale autovehiculului
as1800z000101a Pericol de rănire a pielii şi ochilor la manipularea uleiului de motor. Pericol de intoxicare prin înghiţire de ulei de motor
as4700z000101a Pericol de explozie prin aprindere, pericol de intoxicare prin inhalare şi înghiţire de carburant cât şi pericol de rănire prin contactul pielii şi ochilor cu carburantul
as4900z000101a Pericol de ardere, asfixiere şi de intoxicare în cadrul lucrărilor la instalaţia de gaze arse şi la componentele aferente. Pericol de asfixiere şi pericol de intoxicare prin inhalare de componente gazoase şi solide ale gazelor arse.