Remove/Install Additional Charge Air Compressor - AR09.50-P-4770MSA

Engine 256.9 in model 213, 238, 257 with code M016 (Uprated engine)

Engine 256.9 in model 290

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

	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
	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
Topical note	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
	Remove/install
1	Remove charge-air distributor.	Only install upper engine cover after the leak test.	AR09.41-P-8683MSA
2	Remove screws/bolts (3).	M6X1	*BA00.10-P-1002-04A
		Bolt, feed line/return line to additional compressor	*BA09.50-P-1002-02MRT
3	Remove coolant return line (4r) and coolant feed pipe (4v) and seal openings with suitable stop plugs.	Replace O-rings.
		Record plug	Fig 1
4	Release and disconnect electrical connector (2), unclip electric line.
5	Release and disconnect electrical connector (12), unclip electric line.
6	Remove bracket (13).	Screw, charge air distributor support to crankcase	*BA09.41-P-1015-01MRT
7	Unscrew screw (7) and remove charge air	Replace O-ring.
	line (6).	Screw, charge air line to additional compressor	*BA09.41-P-1006-01MRT
		Clamp, charge air hose between charge air lines	*BA09.41-P-1017-01MRT
8	Open screw clamp (10) and remove screw (9)	Install new boot (11).
	at timing case.	Screw clamp, boot between charge air lines	*BA09.41-P-1009-01MRT
		Screw, charge air line to timing case	*BA09.41-P-1004-01MRT
		Lubricant, rubber assembly 1 l	*BR00.45-Z-1010-06A
9	Remove charge air line (5).	Replace O-ring.
10	Unscrew the screws (8).	Screw/bolt, additional compressor to crankcase	*BA09.50-P-1001-02MRT
11	Remove electric additional compressor (M60/1).
12	Install in the reverse order.
13	Read out and delete fault memory.
		Engine 256.9 in model 213 with code M016 (Uprated engine)	AD00.00-P-2000-04B
		Engine 256.9 in model 238 with code M016 (Uprated engine)	AD00.00-P-2000-06LWO
		Engine 256.9 in model 257 with code M016 (Uprated engine) Engine 256.9 in model 290	AD00.00-P-2000-06FR
	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
14	Carry out engine test run and check engine for proper leaktightness and leaktightness.
15	Install upper engine cover.		AR01.10-P-2405MSA