Remove/install engine 272 with transmission 716 - AR01.10-P-2400VB

ENGINE 272.942 in MODEL 171.454 with TRANSMISSION 716.6 

ENGINE 272.963 in MODEL 171.456 with TRANSMISSION 716.6 

Fig 1: Identifying Engine Components (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Engine Components (2 Of 2)

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between the columns of the lifting platform and position the four support plates at the lifting platform support points specified by the vehicle manufacturer.	-
	Risk of explosion  caused by fuel igniting, risk of poisoning  caused by inhaling and swallowing fuel and risk of injury to eyes and skin caused by contact with fuel	No fire, sparks, open flames or smoking. Pour fuels only into suitable and appropriately marked containers. Wear protective clothing when handling fuel.	-
	Risk of injury  to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning  caused by 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.	-
	Risk of explosion  caused by oxyhydrogen gas. Risk of poisoning  and caustic burns caused by swallowing battery acid. Risk of injury  caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries	No fire, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers.	-
1	Disconnect ground line from battery		AR54.10-P-0003V
	Notes on battery		AH54.10-P-0001-01A
2	Remove air filter housing		AR09.10-P-1150VA
3	Remove fan shroud		AR20.40-P-6800VA
4	Attach guard plate for radiator / condenser
	Guard plate for radiator / condenser		-
5	Remove poly-V belt (1)		AR13.22-P-1202VA
6	Suction off oil out of power steering expansion reservoir (2)	Hand pump	Figure
7	Detach return line (3) from power steering expansion reservoir (2)		*BA46.30-P-1004-01F
8	Detach pressure line (4) of power steering from power steering pump by unscrewing the union nut (5)	Installation:  Replace sealing ring.
			*BA46.30-P-1002-01F
9	Detach lower engine compartment paneling		AR61.20-P-1105V
10	Drain coolant from radiator		AR20.00-P-1142VA
11	Drain engine oil	See: ↓
		Engine oil and filter change	AP18.00-P-0101VA
		Installation:  Replace sealing ring.
			*BA01.45-P-1001-01M
			*BF18.00-P-1001-01M
12	Detach pressure line (4) of power steering from oil pan by unscrewing bolt (6)		*BA01.45-P-1004-01M
13	Remove coolant compressor (A9) from timing case cover and engine support by unscrewing bolts (7)	Disconnect refrigerant compressor connector (A9x1) and attach refrigerant compressor (A9) with connected pipe system, laterally at bottom of engine compartment.
			*BA83.55-P-1001-01M
14	Remove propeller shaft from drive flange of transmission		AR41.10-P-0050-02V
15	Detach center shifter console and shift rod on transmission		AR26.60-P-0600V/02V
16	Remove rear engine mount	After removing rear engine mount, lower transmission jack and allow transmission to lie on engine crossmember. Telescoping transmission jack 0.5 - 1.0 ton Passenger car transmission platform	AR22.10-P-1160VA
	Risk of poisoning  caused by swallowing brake fluid. Risk of injury  caused by brake fluid coming into contact with skin and eyes	Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid.	-
17	Disconnect hydraulic line (8) of clutch operation	Seal the connections.
			*BA25.20-P-1002-01B
		Set of stop plugs	Figure
	Brake fluid notes		AH42.50-P-0001-01A
	Risk of injury  to skin and eyes caused by handling hot or glowing objects.	Wear safety gloves, protective clothing and safety glasses, if necessary.	-
18	Detach the exhaust system from the exhaust manifolds by unscrewing the bolts (13)	Installation:  Clean connecting points of combustion and corrosion residues, replace bolts (13).
			*BA49.10-P-1001-01N
19		Remove engine wiring harness to remove engine	AR01.00-P-2410-02VD
20	Remove vacuum line (14) of purge control valve (Y58/1) from vacuum line (15) of crankcase ventilation system.
21	Remove vacuum line of brake booster		AR43.10-P-0355VA
22	Remove coolant hose (18)	Inspect condition of coolant hose, replace if necessary.
23	Detach coolant hose (19) from coolant pump and pull from bracket (20)	Inspect condition of coolant hose, replace if necessary.
24	Detach coolant hose (21) from connection at coolant hose (22)	Inspect condition of coolant hose, replace if necessary.
25	Detach coolant hose (22) from partition wall by disengaging securing clamp	Inspect condition of coolant hose, replace if necessary.
26	Release fuel pressure through service valve		AR07.03-P-1460-01VA
27	Dismount fuel line (23) from fuel distributor	Collect feathering-out fuel and seal connections.
			*BA07.03-P-1001-01B
		Set of stop plugs	Figure
28	Disconnect engine mount from front axle carrier; to do this unscrew bolts (24)		*BA22.10-P-1006-01O
29	Lift out engine	When lifting out the engine ensure that the steering coupling is not damaged, no cables and lines are damaged and the engine does not touch the partition wall. Slightly raise engine equally at front and rear, pull slightly forward, lower to the rear and lift out. Engine hoist
30	Install in the reverse order
31	Bleed clutch operating system		AR25.20-P-0070V
32	Inspect transmission oil level	Correct oil level = 10 mm below the bottom edge of the filler opening. Carry out the measurement e. g. with a slanted hexagon socket wrench.
			*BF26.10-P-1001-01C
			*BA26.40-P-1003-01C
			-
33	Fill power steering pump and bleed		AR46.30-P-0010V
	Risk of accident  caused by vehicle starting off by itself when engine is running. Risk of injury  caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	-
34	Carry out engine test run	Check fuel line screw connection (23), pressure and return line (3, 4) of power steering, connections of coolant hoses (18, 19, 21, 22), exhaust system and oil drain screw for leaks.

Fig 3: Identifying Set Of Stop Plugs (210 589 00 71 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Hand Pump (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA