LEMON Manuals: Even more car manuals for everyone
Home >> Mercedes Benz >> 2003 >> G55 >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling -- Maintenance -- G-Class (463) >> Maintenance >> Cooling and heating system - Check condition of radiator, lines and hoses - AP20.00-P-2050G

Cooling and heating system - Check condition of radiator, lines and hoses - AP20.00-P-2050G

ENGINES 102, 110, 115, 602, 616, 617 in MODEL 460 

ENGINES 102, 602, 612, 642 in MODEL 461 

ENGINES 102, 103, 104, 112, 113, 117, 273, 602, 603, 606, 612, 628, 642 in MODEL 463 

Fig 1: Identifying Radiator, Lines And Hoses
G07712722Courtesy of MERCEDES-BENZ USA

Engine 612.965 

Fig 2: Identifying Coolant Expansion Reservoir Cap
G07712715Courtesy of MERCEDES-BENZ USA

Engine 642.975 

Fig 3: Identifying Coolant Expansion Reservoir Cap
G07712724Courtesy of MERCEDES-BENZ USA

Engine 642.970 

Fig 4: Identifying Coolant Expansion Reservoir Cap
G07712725Courtesy of MERCEDES-BENZ USA
INSPECT Checking     
DANGER Risk of injury  to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning  caused by 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
    IMPORTANT Only perform the leak test when the engine is cold.  
1 Set vehicle heating to maximum heat output on operating unit    
2 Open radiator or coolant expansion reservoir IMPORTANT Slowly screw open end cover (1) and release pressure, then unscrew end cover (1).
IMPORTANT Replace the cap (1) if corroded.
 
3 Check coolant level and correct if necessary    
    Engine 642 in model 461, 463, engine 273 in model 463 AP20.00-P-2010GY 
    Engine 102 in model 460, 461.217/219/223/227/229/238/239/249/266/267, 463.200/204/220/221/224/225, engine 103 in model 463.207/227/228, Engine 104 in model 463.208/230/231, Engine 110 in model 460, Engine 115 in model 460, Engine 117 in model 463.228, Engine 602 in model 460, 461.321/322/323/326/327/328/329/335/336/337/338/341/365/366/367/368/401/402/403/404/405/450/451/452/454/455/456/458/459, 463.304/324/325, engine 603 in model 463.300/307/320/321/327/328, Engine 606 in model 463.308/330/331, Engine 616 in model 460, Engine 617 in model 460, Engine 612.965 in model 463.322/323, engine 612.966 in model 461.302/331/332/342/345, Engine 628.962 in model 463.309/332/333 AP20.00-P-2010G
    Engine 112.945 in model 463.209/232/233/244/245/250, Engine 113.962 in model 463.206/240/241/247/248/249/254, Engine 113.982 in model 463.241/243/246, Engine 113.993 in model 463.270/271 AP20.00-P-2010GA 
NOTES Notes on coolant   AH20.00-N-2080-01A
4 MPECIAL TOOL Attach tester cap and MPECIAL TOOL pressure pump MPECIAL TOOL Pressure pump Fig 5
    MPECIAL TOOL Tester cap Fig 6
    MPECIAL TOOL Tester cap Fig 7
5 Build up test pressure using MPECIAL TOOL pressure pump IMPORTANT The test pressure must be the same as the opening pressure of the cap (1). The code number on the cap (1) indicates the opening pressure.  
6 Check components of the engine cooling system and heating system IMPORTANT Check that the following components are in good condition, are fitted securely and are not leaking:
  • Engine and bolted-on major assemblies
  • Freeze plug
  • Radiator
  • Coolant pump
  • Coolant expansion reservoir
  • Heating system heat exchanger
  • Heating regulating valve
  • Stationary heater unit

IMPORTANT Check that the following components are in good condition, are not leaking, are fitted securely and are routed correctly:
  • Coolant lines and hoses as well as their attachments

IMPORTANT Tighten the screw clamps if necessary.
IMPORTANT Rectify all defects against a separate repair order.
 
7 Check radiator fins IMPORTANT Check that the fins are in good condition and are not dirty.
IMPORTANT Replace the radiator if fins are broken or deformed.
CLEAN Clean the radiator if its fins are clogged with dirt.
 
8 Release test pressure and detach MPECIAL TOOL pressure pump and MPECIAL TOOL tester cap    
9 Check coolant level and correct if necessary Engine 642 in model 461, 463, engine 273 in model 463 AP20.00-P-2010GY 
    Engine 102 in model 460, 461.217/219/223/227/229/238/239/249/266/267, 463.200/204/220/221/224/225, engine 103 in model 463.207/227/228, Engine 104 in model 463.208/230/231, Engine 110 in model 460, Engine 115 in model 460, Engine 117 in model 463.228, Engine 602 in model 460, 461.321/322/323/326/327/328/329/335/336/337/338/341/365/366/367/368/401/402/403/404/405/450/451/452/454/455/456/458/459, 463.304/324/325, engine 603 in model 463.300/307/320/321/327/328, Engine 606 in model 463.308/330/331, Engine 616 in model 460, Engine 617 in model 460, Engine 612.965 in model 463.322/323, engine 612.966 in model 461.302/331/332/342/345, Engine 628.962 in model 463.309/332/333 AP20.00-P-2010G
    Engine 112.945 in model 463.209/232/233/244/245/250, Engine 113.962 in model 463.206/240/241/247/248/249/254, Engine 113.982 in model 463.241/243/246, Engine 113.993 in model 463.270/271 AP20.00-P-2010GA 
10 Close radiator or expansion reservoir for coolant using cap (1)    
Fig 5: Identifying Pressure Pump (124 589 24 21 00)
G07712726Courtesy of MERCEDES-BENZ USA
Fig 6: Identifying Test Cap (124 589 00 91 00)
G07752946Courtesy of MERCEDES-BENZ USA
Fig 7: Identifying Test Cap (210 589 00 91 00)
G07712728Courtesy of MERCEDES-BENZ USA