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Home >> Mercedes Benz >> 2017 >> GLC300 Base >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System - 253 Chassis >> Testing & Repair >> Remove/Install Coolant Circuit Feed Line Of Turbochargers - AR20.20-P-1100MNG

Remove/Install Coolant Circuit Feed Line Of Turbochargers - AR20.20-P-1100MNG

Engine 177 in model 253 

Fig 1: Turbocharger Coolant Feed Line Component Location - Engine 177
G12817274Courtesy of MERCEDES-BENZ USA
WARNING Risk of injury  to skin and eyes suffering scalding from contact with hot coolant spray. 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 
WARNING Risk of injury  . Skin or eye injuries may result when handling hot or glowing objects. Wear protective gloves, protective clothing and safety glasses, if necessary. AS00.00-Z-0002-01A
CAUTION 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
CAUTION Risk of injury  to skin and eyes due to handling of engine oil. Risk of poisoning  caused by swallowing engine oil Wear protective gloves, protective clothing and safety glasses.
Do not fill engine oil into beverage containers.
AS18.00-Z-0001-01A
  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
REMOVINGINSTALLING Remove/install     
1 Remove coolant circuit return line   AR20.20-P-1101MNG 
2 Remove screw/bolts (6) from ATLs TORQUE SPECIFICATION Bolt, coolant line to turbocharger/cylinder head *BA09.40-P-1004-01ZA 
3 Remove screw/bolts (4, 5) from ATLs TORQUE SPECIFICATION Bolt, coolant line to turbocharger/cylinder head *BA09.40-P-1004-01ZA 
4 Remove screw/bolt (7) on cylinder head TORQUE SPECIFICATION Bolt, coolant line to turbocharger/cylinder head *BA09.40-P-1004-01ZA 
5 Remove coolant circuit feed line (3) upwards, and seal openings with suitable stop plugs INSTALLATION IMPORTANT Replace seals.  
SPECIAL TOOL Record plug Fig 2
6 Install in the reverse order    
TURBOCHARGER

Number Designation Engine 177
BA09.40-P-1004-01ZA Bolt, coolant line to turbocharger/cylinder head Nm 9
Fig 2: Identifying Record Plug (129 589 00 91 00)
G11971934Courtesy of MERCEDES-BENZ USA