Remove/install timing case cover · ar0140p8000mrm · Mercedes-Benz WIS

AR01.40-P-8000MRM

Remove/install timing case cover

12.03.2020

Engine

274.9 in model 167

Modification notes

12.02.2020

Screw, bleed line of crankcase ventilation system to crankcase/timing case cover

Engine 274

BA01.20-P-1005-01R

1	Bolts
2	Timing case cover
3	Oil pan
4	Cap
5	Bolts
6	Screw
7	Electrical connector
8	Electrical connector

P01.40-2369-06

 Warning	Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.	Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-Z-0001-01A
 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
 Danger	Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)	Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.	AS00.00-Z-0035-01A
Topical note	General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment		AH00.00-Z-0300-01A
Topical note	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
	Remove
1	Remove voltage of high-voltage on-board electrical system.		AR47.70-P-1000MEH
2	Deactivate easy entry and exit feature.	Engine 274.9 in model 167 with code 275 (Memory Package (driver's seat, steering column and mirror))
3	Move front wheels to straight-ahead position and fix steering wheel in place with holding device.	 Do not turn the steering wheel after the steering coupling has been disconnected. Otherwise the clock spring contact will be destroyed.
		 Retainer device	*129589012100
4	Disconnect ground line from battery.		AR54.10-P-0003ME
5	Secure vehicle on vehicle lift.		AR00.60-P-1006A
6	Drain off coolant.		AR20.00-P-1142MRM
7	Remove air filter housing.		AR09.10-P-1150MRM
8	Remove heat shield of exhaust gas turbocharger.		AR09.40-P-6036MRM
9	Remove charge air pipe between charge air cooler and exhaust gas turbocharger.
10	Remove vibration damper.		AR03.30-P-1800MRM
11	Remove screw (6).
12	Remove electric refrigerant compressor from engine, place to one side with refrigerant lines connected, and secure against falling down.		AR83.55-P-5311MRM
13	Remove oil pan (3).		AR01.45-P-7500MRM
14	Remove electric vacuum pump from engine, place to one side with lines connected, and secure against falling down.		AR43.05-P-0001MRM
15	Remove coolant hose between electric coolant pump and coolant thermostat.	 Hose clamp pliers	*454589003700
16	Remove electric coolant pump.		AR20.10-P-1281MRM
17	Remove bleed line between air intake pipe and crankcase from timing case cover (2).
18	Remove coolant pipe.		AR20.20-P-7450MRM
19	Remove boost pressure control pressure transducer.		AR07.17-P-7004MRM
20	Remove holder of boost pressure control pressure transducer.
21	Release and disconnect electrical connector (7) and unclip electric line at timing case cover (2).
22	Push electrical connector (8) downward out of timing case cover (2).
23	Remove bolts (5).
24	Remove screws (1) in reverse order of tightening procedure.		AR01.40-P-8000-01MR
25	Remove timing case cover (2).	 Do not hammer in any tool between timing case cover (2) and crankcase to remove. The sealing surfaces can be damaged otherwise.
	Clean
26	Clean sealing surfaces.		AR01.00-P-0050-01A
		 Do not use any sharp-edged tools or abrasive paper. The sealing surfaces can be damaged otherwise.
		Loctite 7200	*BR00.45-Z-1038-04A
		Loctite 7063 (400 ml) cleaning spray	*BR00.45-Z-1046-04A
	Check
27	Check sealing surface on timing case cover (2) and on crankcase for damage.	If there is a problem,
		
		Replace corresponding component.
	Install
28	Apply sealant to timing case cover (2).
	Notes on application of flange sealants to seal major assemblies		AH00.00-P-0500-01MNE
	Notes on sealant path for timing case cover		AH01.40-P-1000-01MR
		Sealant, Loctite 5970, 50 ml	*BR00.45-Z-1013-01A
		 Application gun	*112589002500
29	Position timing case cover (2) on crankcase.
30	Screw in screws (1) according to tightening procedure.		AR01.40-P-8000-01MR
		 Bolt, timing case cover to crankcase	*BA01.40-P-1001-01K
31	Install new cap (4).	When replacing timing case cover(2).
32	Install new front radial shaft sealing ring for crankshaft.		AR03.20-P-3002MRM
33	Screw in screws (5).	 Bolt, cylinder head to timing case cover	*BA01.30-P-1002-01Y
34	Pull electrical connector (8) with new sealing ring into timing case cover (2).
35	Connect electrical connector (7) and clip electric line into timing case cover (2).
36	Install holder of boost pressure control pressure transducer.	 Screw, boost pressure control pressure transducer holder to cylinder head/timing case cover	*BA09.40-P-1017-01U
37	Install boost pressure control pressure transducer.		AR07.17-P-7004MRM
38	Install coolant pipe.		AR20.20-P-7450MRM
39	Install bleed line between air intake pipe and crankcase on timing case cover (2).	 Screw, bleed line of crankcase ventilation system to crankcase/timing case cover	*BA01.20-P-1005-01R
40	Install electric coolant pump.		AR20.10-P-1281MRM
41	Install coolant hose between electric coolant pump and coolant thermostat.	 Hose clamp pliers	*454589003700
42	Attach electric vacuum pump to engine.		AR43.05-P-0001MRM
43	Install oil pan (3).		AR01.45-P-7500MRM
44	Attach electric refrigerant compressor to engine.		AR83.55-P-5311MRM
45	Screw in screw(6).	 Bolt, timing case cover to crankcase	*BA01.40-P-1001-01K
46	Install vibration damper.		AR03.30-P-1800MRM
47	Install charge air pipe between charge air cooler and exhaust gas turbocharger.	 Charge air pipe/charge air cooling	*BA09.41-P-1001-01U
48	Install heat shield of exhaust gas turbocharger.		AR09.40-P-6036MRM
49	Install air filter housing.		AR09.10-P-1150MRM
		 Only install upper engine cover after the leak test.
50	Fill in coolant.		AR20.00-P-1142MRM
		 Only install lower engine compartment paneling after leak test.
51	Remove locking clip from vehicle on vehicle lift.		AR00.60-P-1006A
52	Remove holding device of steering wheel.
53	Connect ground line to the battery.		AR54.10-P-0003ME
54	Put the high-voltage on-board electrical system into operation.		AR47.70-P-1000MEH
55	Check engine oil level in the multifunction display and correct if necessary.
			AP18.00-P-1812SKI
 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
56	Perform engine test run. While doing so, check engine for proper operation and leak tightness.
57	Install lower engine compartment lining.		AR61.20-P-1105ME
58	Install upper engine cover.
			AP01.10-P-2405-01O

 Crankcase ventilation system, cylinder head cover, camshaft housing

Number	Designation		Engine 274
BA01.20-P-1005-01R	Screw, bleed line of crankcase ventilation system to crankcase/timing case cover	Nm	8

 Cylinder head

Number	Designation			Engine 274
BA01.30-P-1002-01Y	Bolt, cylinder head to timing case cover	M8	Nm	20

 Crankcase, timing case cover, end cover

Number	Designation				Engine 274
BA01.40-P-1001-01K	Bolt, timing case cover to crankcase	M6		Nm	9
		M8	Stage 1	Nm	-
			Stage 2	Nm	-
		M10		Nm	58

 Turbocharger

Number	Designation		Engine 274
BA09.40-P-1017-01U	Screw, boost pressure control pressure transducer holder to cylinder head/timing case cover	Nm	8

 Charge air pipe/charge air cooling

Number	Designation		Engine 274
BA09.41-P-1001-01U	Charge air pipe/charge air cooling	Nm	9

454 589 00 37 00

Hose clamp pliers

112 589 00 25 00

Application gun

129 589 01 21 00

Retainer device

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

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