Removing and installing exhaust system complete (engine 113) - AR49.10-P-7000VT

ENGINE 113.989 in MODEL 171.473 

Fig 1: Identifying Exhaust System Complete Components (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Exhaust System Complete Components (2 Of 2)

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of death  caused by vehicle slipping or toppling off the lifting platform.	Align vehicle between the columns of the and position the four support plates below the lifting platform support points specified by the vehicle manufacturer.	-
	Risk of injury  to skin and eyes caused by handling hot or glowing objects.	Wear safety gloves, protective clothing and safety glasses, if necessary.	-
	Risk of injury from grazing 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.	-
1	Lift/jack up vehicle	Position arms of lift platform in such a way that bolt (3) of the rear diagonal strut (1) on the right and left is accessible.	AR00.60-P-1000V
2	Remove rear diagonal strut, (1) on the right and left	Installation:  Bolt (2) and bolt (3) of the diagonal struts may only be tightened when the vehicle is standing with its wheels on the ground.
			*BA61.10-P-1005-01A
3	Remove engine compartment paneling	Installation:  Install engine compartment paneling only after the engine test run.	AR61.20-P-1105V
4	Unclip left O2 sensor connector, upstream of TWC (G3/3x1), right O2 sensor connector, upstream of TWC (G3/4x1), left O2 sensor connector, downstream of TWC (G3/5x1), right O2 sensor connector, downstream of TWC (G3/6x1) and electrical lines of O2 sensors from retaining brackets and loosen cable tie	Installation:  Install new tie straps.
5	Support the exhaust system (4) with a transmission jack and a transmission platform	Transmission jack	*WE58.40-Z-1030-11A
		Passenger car transmission platform	*WE58.40-Z-1018-11A
6	Remove left catalytic convertor (5) and right catalytic convertor (6) from the exhaust manifolds by undoing bolts (7)	Installation:  Clean connecting points free of combustion and corrosion residues, replace bolts the connection may not be tight and the bolts may shear off if they are reused.
		Check rivet nuts in exhaust manifold, replace if damaged.	-
			*BA49.10-P-1009-01A
		Caulking bolt	Fig 3
7	Unhinge exhaust system (4) from exhaust rubber mounts (8)	For easier disassembly: spread lubricant on the retaining bracket (9) and the bores of the exhaust rubber mounts. Check exhaust rubber mount; replace if damaged.
		Lubricant	*BR00.45-Z-1002-06A
8	Lower the exhaust system (4) and remove it completely
9	Install in the reverse order
10	Check installation position and unobstructed movement of exhaust system (4)	The exhaust system must be installed free of stress, if necessary: ↓ Align exhaust system.
	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 running engine	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not grasp hot or rotating parts.	-
11	Carry out engine test run	Check exhaust system (4) for leaks.

FRAME FLOOR ASSEMBLY

Number	Designation		Model 171
BA61.10-P-1005-01A	Self-locking bolt, rear diagonal strut at frame floor	Nm	60

EXHAUST SYSTEM

Number	Designation		Engine 113 in model 171
BA49.10-P-1009-01A	Bolt, flange connection to exhaust pipe or exhaust manifold	Nm	20

Fig 3: Identifying Cocking Bolt (103 589 01 39 00)

Courtesy of MERCEDES-BENZ USA

WORKSHOP EQUIPMENT

WE58.40-Z-1018-11A	Transmission platform
WE58.40-Z-1030-11A	Transmission jack

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1002-06A	Lubricant	A 000 989 01 60