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Home >> Mercedes Benz >> 2017 >> GLC300 Base >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Air Intake, Turbocharging - 253 Chassis >> Testing & Repair >> Remove/Install Lower Coolant Expansion Reservoir For Low-Temperature Circuit - AR09.41-P-0060MNG

Remove/Install Lower Coolant Expansion Reservoir For Low-Temperature Circuit - AR09.41-P-0060MNG

Engine 177 in model 253 

G12817104Courtesy 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
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
  Notes on coolant   AH20.00-N-2080-01A
  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
REMOVINGINSTALLING Remove/install     
1 Remove fan unit   AR20.40-P-5050MNG
    IMPORTANTInstallation:  Do not install center and front lower engine compartment lining until after leak test.  
2 Actuate connector coupling at upper coolant expansion reservoir for low-temperature circuit, remove feed line (1) and seal openings with suitable stop plugs SPECIAL TOOL Record plug Fig 2
3 Actuate connector coupling at lower coolant expansion reservoir for low-temperature circuit (4) removed feed line (1) and seal openings with suitable stop plugs SPECIAL TOOL Record plug Fig 2
4 Remove coolant hose (5) from lower coolant expansion reservoir for low-temperature circuit (4) and seal openings with protective covers   AR20.20-P-7441-01RQ
    SPECIAL TOOL Set of protective caps Fig 1
5 Remove screw/bolt (3) TORQUE SPECIFICATION Bolt, low-temperature circuit expansion reservoir at bottom to charge air cooler bracket *BA09.41-P-1010-01X 
6 Unclip vacuum line (2) at lower coolant expansion reservoir for low-temperature circuit (4)    
7 Slide lower coolant expansion reservoir for low-temperature circuit (4) in direction of arrow and remove downward    
8 Install in the reverse order    
9 Check low-temperature circuit cooling system for leaktightness   AR09.41-P-1011MNG 
WARNING Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running. Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. AS00.00-Z-0005-01A
10 Perform an engine test run and in doing so check low-temperature circuit for proper function    
11 Install center and front lower engine compartment paneling   AR61.20-P-1105LW
CHARGE AIR LINE/CHARGE AIR COOLING

Number Designation Engine 177
BA09.41-P-1010-01X Bolt, low-temperature circuit expansion reservoir at bottom to charge air cooler bracket Nm 9
Fig 1: Identifying Set Of Protective Caps (001 589 00 91 00)
G12079466Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Record Plug (129 589 00 91 00)
G11972128Courtesy of MERCEDES-BENZ USA