Remove/Install Oil Separator - AR01.20-P-9750MFD

Engine 260 in model 118, 177, 247

with code 460 (Canada version)

with code 494 (US version)

with code 835 (South Korea version)

with code 945 (China Stage 6 exhaust treatment)

Shown on model 177 with engine 260 without code M016 (performance-enhanced engine)

Fig 1: Oil Separator Components Location - Engine 260 In Model 247 With Code 460; 494; 835; 945 (Shown On Model 177 Without Code M016)

Courtesy of MERCEDES-BENZ USA

Shown on model 177 with engine 260 without code M016 (performance-enhanced engine)

Courtesy of MERCEDES-BENZ USA

	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 overpressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-Z-0001-01A
	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
	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
	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
Notice	Notes on coolant		AH20.00-P-2080-01KOA
Notice	Notes on threaded connections with aluminum screws/bolts		AH00.00-P-0006-01RM
Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
Notice	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
Notice	Notes on self-locking nuts and bolts		AH00.00-P-0001-01KOA
Notice	Notes on safety-relevant components		AH00.00-Z-0019-01A
	Remove/install
1	Remove upper engine cover.
		Do not install upper engine cover until after the leak test.	AP01.10-P-2405-01C
2	Release and disconnect bleed line at connecting flange to charge-air distributor and seal openings with suitable stop plugs.	Record plug	Fig 3
3	Release and disconnect electrical connector a partial-load operation crankcase ventilation valve (Y58/2).
4	Remove partial-load operation crankcase ventilation valve (Y58/2) from bracket.
5	Remove charge-air distributor.	Only install lower engine compartment paneling after leak test.	AR09.41-P-8683MFC
6	Remove coolant hose (13) and seal openings with suitable protective covers.	Hose clamp pliers	Fig 2
		Set of protective covers	Fig 5
7	Remove retaining clamp (12), remove coolant hose (11) and coolant connection from coolant thermostat, and place to one side.
8	Seal openings using suitable protective covers.	Set of protective covers	Fig 5
9	Release and disconnect electrical connector from crankshaft Hall sensor (B70).		AR15.12-P-2136MFC
10	Remove electrical wiring harnesses at oil separator (1).	Dismantling tool	Fig 4
11	Remove screws (2 - 10) at oil separator (1) in reverse numerical order.	Observe numerical order.
		Bolt, oil separator to crankcase	*BA01.20-P-1002-03C
12	Remove partial-load operation crankcase ventilation valve (Y58/2) and oil separator (1) at the same time.	The partial-load operation crankcase ventilation valve (Y58/2) and the oil separator (1) form a single unit. Do not separate partial-load operation crankcase ventilation valve (Y58/2) and oil separator (1). Replace seal. Make sure that seal of oil separator (1) is seated correctly.
13	Clean sealing surfaces.	The sealing surface on the oil separator (1) and on the crankcase must be free of dust and grease. Otherwise there may be adhesion problems. Assembly cleaner	*BR00.45-Z-1028-04A
14	Install in the reverse order.
15	Read out fault memory and delete if necessary.
			AD00.00-P-2000-06MFA
16	Check engine oil level and correct.
			AP18.00-P-1812MFA
	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 o' the danger zone.	AS49.00-Z-0001-01A
	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
17	Perform engine test run; while doing so, check engine in area of oil separator (1) for leak tightness.
18	Install lower engine compartment lining.	Engine 260 in model 118, 177, 247 with code 460 (Canada version) with code 494 (US version) with code 835 (South Korea version) with code 945 (China Stage 6 exhaust treatment) with code M016 (Uprated engine)	AR61.20-P-1105MFR
		Engine 260 in model 118, 177, 247 with code 460 (Canada version) with code 494 (US version) with code 835 (South Korea version) with code 945 (China Stage 6 exhaust treatment) except code M016 (Uprated engine)	AR61.20-P-1105MFA
19	Install upper engine cover.
			AP01.10-P-2405-01C