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Home >> Mercedes Benz >> 2014 >> ML350 Base >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Air Intake, Turbocharging - 166 Chassis >> Testing & Repair >> Remove/install low-temperature circuit expansion reservoir - AR09.41-P-0001GQC

Remove/install low-temperature circuit expansion reservoir - AR09.41-P-0001GQC

ENGINE 276.8 in MODEL 166, 251 

Fig 1: Identifying Low-Temperature Circuit Expansion Reservoir Remove/Install Components
G09981838Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
DANGER Risk of injury  caused by fingers being jammed or pinched when removing, installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof. No parts of the body or limbs should be within the operating area when the components are moving. AS00.00-Z-0011-01A
DANGER 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
1 Switch off ignition    
2 Remove engine cover INSTALLATION IMPORTANT Ensure correct seating of the engine cover.  
3 Remove right engine air intake duct    
4 Slowly open cap (1) on expansion reservoir (4) and remove it IMPORTANT The coolant temperature should be approx. 40°C.  
5 Suction coolant out of expansion reservoir (4) SPECIAL TOOL Hand pump Fig 3
6 Detach coolant hose (2) from expansion reservoir (4) INSTALLATION IMPORTANT Replace O-ring.
IMPORTANT Collect brake fluid in a suitable container.
 
7 Detach coolant hose (3) from expansion reservoir (4) SPECIAL TOOL Hose clamp pliers Fig 2
8 Install in the reverse order    
INSPECT Check     
9 Check coolant level and correct if necessary    
IMPORTANT Notes on coolant level   AH20.00-P-1142-01CW
10 Check cooling system for leaktightness MODEL 251 with ENGINE 276.8 AR20.00-P-1010GZC
MODEL 166 with ENGINE 276.8 AR20.00-P-1010GQ
DANGER 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
11 Carry out engine test run and check the cooling system for proper operation and for leaktightness    
Fig 2: Identifying Hose Clamp Pliers (003 589 03 37 00)
G07633841Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Hand Pump (210 589 00 71 00)
G07473017Courtesy of MERCEDES-BENZ USA