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Home >> Mercedes Benz >> 2007 >> SL55 >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel Injection System -- Testing & Repair -- 230 Chassis >> Testing & Repair >> Remove/install heated O2 sensor - AR07.52-P-5303 >> Remove/install heated O2 sensor - AR07.52-P-5303RMG (SL63 AMG)
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Remove/install heated O2 sensor - AR07.52-P-5303RMG (SL63 AMG)

ENGINE 156 in MODEL 230.470 

Fig 1: Removing/Installing Heated O2 Sensor
G00544289Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install
DANGER Risk of injury  to skin and eyes caused by handling hot or glowing objects. Wear safety gloves, protective clothing and safety glasses, if necessary. -
DANGER Risk of death  caused by vehicle slipping or toppling off of the lifting platform. Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer. -
1 Switch off ignition    
2 Remove engine compartment paneling   AR61.20-P-1105R
3 Unclip electrical connector and electrical feed line for corresponding O2 sensor out of retaining clamps on transmission    
4 Disconnect electrical connector for corresponding O2 sensor    
5 Unscrew the corresponding O2 sensor from the catalytic converter From the top, detach LH O2 sensor upstream of CAT (G3/3) or RH O2 sensor upstream of CAT (G3/4).
Installation:  Coat thread with heat-resistant lubricant. Ensure correct routing of lines on O2 sensors.
 
    TORQUE SPECIFICATION *BA14.00-P-1002-01A 
    SPECIAL TOOL Fig 2
    Paste *BR00.45-Z-1005-06A 
6 Install in the reverse order    
7 Read out fault memory with STAR DIAGNOSIS and erase if necessary    
DANGER 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.
AS00.00-Z-0005-01A
8 Conduct engine test run and check exhaust system for leaks    
O2 SENSOR

Number Designation Engine 156
BA14.00-P-1002-01A O2 sensor on catalytic converter Nm 50
Fig 2: Identifying Box Wrench Bit (000 589 71 03 00)
G07694428Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1005-06A Paste, hot lubrication 1 kg, DB supply specification 6879.20 A 000 989 76 51