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Remove/install low-temperature circuit coolant expansion reservoir - AR20.30-P-4951MTA

ENGINE 133 in MODEL 117, 156, 176 

Fig 1: Low-Temperature Circuit Coolant Expansion Reservoir Remove/Install Components
G11065663Courtesy of MERCEDES-BENZ USA
DANGER Risk of injury  to skin and eyes suffering scalding from contact with hot coolantspray. 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
NOTES Notes on coolant   AH20.00-N-2080-01A
REMOVINGINSTALLING Remove/install     
1 Empty low-temperature circuit   AR20.00-P-1144MTA 
2 Detach partial load operation crankcase ventilation system valve (Y58/2) from bracket (2) IMPORTANT Check retaining rubber from purge valve for damage and replace if necessary.  
3 Unclip purge lines (3) and vent line (4) from bracket (2) and place to one side NOTES
Do not bend the purge lines (3) too strongly. These can break and must be replaced otherwise.
 
4 Detach coolant lines (6) from coolant expansion reservoir (1) SPECIAL TOOL Hose clamp pliers Figure
5 Remove screw/bolts (5) TORQUE SPECIFICATION Bolt, charge air cooling expansion reservoir to cylinder head cover *BA09.41-P-1006-01T 
6 Remove coolant expansion reservoir (1) with bracket (2) upwards    
7 Detach coolant expansion reservoir (1) from holder (2) If necessary.  
8 Install in the reverse order    
INSPECT Check     
9 Check low-temperature circuit cooling system for leaktightness   AR09.41-P-1010MTA
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
10 Perform an engine test run and check cooling system for proper operation    
CHARGE AIR PIPE/CHARGE AIR COOLING

Number Designation ENGINE 133
BA09.41-P-1006-01T Bolt, charge air cooling expansion reservoir to cylinder head cover Nm 9
Fig 2: Identifying Hose Clamp Pliers (003 589 03 37 00)
G07300850Courtesy of MERCEDES-BENZ USA