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Home >> Mercedes Benz >> 2014 >> SL63 AMG >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System - 231 Chassis >> Testing & Repair >> Remove/install coolant lines >> Remove/install coolant lines - AR20.20-P-7440RKB

Remove/install coolant lines - AR20.20-P-7440RKB

ENGINES 157, 278 in MODEL 231 

Fig 1: Coolant Lines Remove/Install Components
G11128578Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install    
DANGER Risk of death  caused by vehicle slipping or toppling off of the lifting platform. Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer. AS00.00-Z-0010-01A
DANGER Risk of injury  caused by fingers being pinched or crushed  when removing, installing or aligning hoods, doors, trunk lids, liftgates or sliding roof Keep body parts and limbs well clear of moving parts. AS00.00-Z-0011-01A
DANGER Risk of injury from grazing or abrasion injury of body parts on sharp-edged 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
    IMPORTANT Observe assembly sequence for the coolant lines.
One must always  first remove the lower coolant lines (2r, 2l) and then the upper coolant lines (1r, 1l) on the turbocharger.
 
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
1 Drain coolant at radiator   AR20.00-P-1142RK 
NOTES Notes on coolant   AH20.00-N-2080-01A
2 Remove charge air ducts from air filter to turbocharger   AR09.41-P-8620RKB
3 Remove poly-V belt   AR13.20-P-0001RKB
  Only perform operation steps 4 to 8 for removal of the upper coolant line (1l) and the lower coolant line (2l)     
4 Disassemble double clamp (6) for upper coolant line (1l) and lower coolant line (2l) and remove TORQUE SPECIFICATION *BA09.40-P-1006-01R 
    TORQUE SPECIFICATION *BA09.40-P-1009-01R 
5 Disassemble and remove bracket (5) for the upper coolant line (1l) from coolant pump INSTALLATION IMPORTANT Ensure correct assembly of the bracket (5) and correct routing of the upper coolant line (1l) and lower coolant line (2l). Damage can occur to the coolant circuit of the turbocharger otherwise.
TORQUE SPECIFICATION
*BA09.40-P-1005-01R 
6 Remove screw/bolts (4) from coolant pump TORQUE SPECIFICATION *BA09.40-P-1005-01R 
7 Remove screw/bolt (3) for upper coolant line (1l) and lower coolant line (2l) at turbocharger TORQUE SPECIFICATION *BA09.40-P-1005-01R 
8 Pull upper coolant line (1l) and lower coolant line (2l) out of the coolant pump and turbocharger and pull out upwards IMPORTANT Replace sealing ring.
FLUID SPECIFICATION Set of stop plugs
Figure
  Only perform operation steps 9 to 14 for removal of the upper coolant line (1l) and the lower coolant line (2l)     
9 Remove bracket (8) for the upper coolant line (1r) to coolant pump TORQUE SPECIFICATION *BA09.40-P-1005-01R 
10 Remove screw/bolt (7) for upper coolant line (1r) to coolant pump TORQUE SPECIFICATION *BA09.40-P-1005-01R 
11 Remove screw/bolt (9) for upper coolant line (1r) and lower coolant line (2r) at turbocharger TORQUE SPECIFICATION *BA09.40-P-1005-01R 
12 Remove upper coolant line (1r) from coolant pump and turbocharger and take out upwards IMPORTANT Replace sealing ring.  
13 Remove screw/bolt (7) for lower coolant line (2r) on timing case cover TORQUE SPECIFICATION *BA09.40-P-1005-01R 
14 Remove lower coolant line (2r) from timing case cover and turbocharger and take out upwards IMPORTANT Plug openings.
INSTALLATION IMPORTANT Replace sealing ring.
FLUID SPECIFICATION Set of stop plugs
Figure
15 Install in the reverse order    
INSPECT Checking     
16 Inspect cooling system for leaks   AR20.00-P-1010RK 
DANGER Risk of accident  caused by vehicle starting off by itself when engine is running. Risk of injury  caused by contusions and burns during starting procedure or when working near the engine as it is running Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.
AS00.00-Z-0005-01A
17 Carry out engine test run, checking the engine for proper operation and leaks    
TURBOCHARGER

Number Designation Engine 157 Engine 278
BA09.40-P-1005-01R Screw/bolt, coolant line to turbocharger/oil filter/coolant pump/timing case cover Nm 9 9
BA09.40-P-1006-01R Screw/bolt, coolant line bracket to water pump/turbocharger Nm 9 9
BA09.40-P-1009-01R Screw/bolt, coolant line clamp to bracket Nm 9 9
Fig 2: Identifying Set Of Stop Plugs (129 589 00 91 00)
G11065549Courtesy of MERCEDES-BENZ USA