Remove/install exhaust system complete - AR49.10-P-7000MCU

ENGINES 132.910 in MODEL 451.3/4 with CODE (494) USA version 

ENGINES 132.910 in MODEL 451.3/4 as of 31.8.10 except CODE (494) USA version 

Fig 1: Identifying Complete Exhaust System Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Risk of death  caused by vehicle slipping or toppling off of the lifting platform. Raise vehicle with vehicle lift	Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
2	Remove rear apron		AR88.30-P-0502MCC
3	Support rear axle crossmember (4) using a transmission jack, unscrew bolts (3) and lower the rear axle crossmember (4)	Use a suitable base. Transmission jack	*BA35.10-P-1003-01F
4	Remove heat shield for exhaust system		AR49.10-P-6945MCU
5	Unclip bracket (5O2) from connector on sensor upstream of CAT [KAT] (G3/2x1)
6	Disconnect connector for O2 sensor upstream of CAT [KAT] (G3/2x1) and connector for O2 sensor downstream of CAT [KAT] (G3/1x1)
7	Unscrew bolts (9) from bracket (10)
8	Support rear muffler (1) with a transmission jack and a removal fixture	Removal fixture Transmission jack	Figure
9	Unhook rear muffler (1) from the rubber retainers (2)
10	Unscrew bolt (8)		*BA49.10-P-1003-01AD
11	Unscrew nuts (6)	Replace self-locking nuts (6). When unscrewing last nut (6), use helper to support rear muffler (1) with catalytic converter (7).	*BA49.10-P-1002-01AD
12	Lower rear muffler (1) with catalytic converter (7) and take hold of it under the vehicle	Aid of helper required. : Clean sealing surfaces on cylinder head, on catalytic converter (7). Replace exhaust manifold gasket.
13	Install in the reverse order
	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.	AS00.00-Z-0005-01A
14	Perform engine test run and inspect exhaust system around catalytic convertor (7) for leaks

Fig 2: Identifying Removal Assembly (450 589 02 62 00)

Courtesy of MERCEDES-BENZ USA