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Home >> Mercedes Benz >> 2016 >> C300 Base >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System - 205 Chassis (4D Sedan) >> Testing & Repair >> Remove/install coolant lines >> Remove/install coolant lines - AR20.20-P-7440MMV

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

Engine 276.8 in model 205 

Fig 1: Identifying Coolant Lines Remove/Install Components (1 Of 3)
G10132771Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Coolant Lines Remove/Install Components (2 Of 3)
G10132772Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Coolant Lines Remove/Install Components (3 Of 3)
G10132773Courtesy of MERCEDES-BENZ USA
DANGER 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
REMOVINGINSTALLING Remove/install     
1 Remove engine compartment paneling   AR61.20-P-1105LW
2 Drain off coolant   AR20.00-P-1142LW 
3 Remove left or right air filter housing   AR09.10-P-1150MMV
4 Detach charge air cooler and pull with attached coolant lines to the front   AR09.41-P-6819MMV
5 Remove catalytic converter (11, 12)   AR49.10-P-5500LW
6 Remove screw/bolts (6, 8) and unscrew nuts (7, 10) TORQUE SPECIFICATION Bolt, turbocharger shield bracket to cylinder head *BA09.40-P-1012-01W 
TORQUE SPECIFICATION Bolt/nut for shield attachment *BA09.40-P-1011-01W 
7 Remove heat shield (4) and heat shield (14) from holding clamps    
8 Lift out heat shield (4, 14) upwards    
9 Detach right or left coolant return line (2R or 2L) on air intake pipe (13, 15)    
10 Detach left coolant return line (2L) on oil filter housing and thermostat housing    
11 Detach right or left oil line return line (2R or 2L) at connection for coolant hose (3)    
12 Detach right or left coolant return line (2R or 2L) on ATL INSTALLATION IMPORTANT Replace sealing ring.
IMPORTANT Use suitable SPECIAL TOOL stop plugs to seal the openings.
 
TORQUE SPECIFICATION Bolt for coolant line attachment *BA09.40-P-1010-01W 
TORQUE SPECIFICATION Bolt, coolant feed/return line to turbocharger *BA09.40-P-1008-01W 
SPECIAL TOOL Record plug Fig 4
13 Remove right or left coolant return line (2R or 2L)    
14 Remove soundproofing on the left rail or the right rail   AR07.03-P-1010MMV
15 Remove heat shield (5) on left crankcase TORQUE SPECIFICATION Bolt/nut for shield attachment *BA09.40-P-1011-01W 
16 Remove heat shield (9) on right crankcase TORQUE SPECIFICATION Bolt/nut for shield attachment *BA09.40-P-1011-01W 
17 Unclip engine wiring harness holder on right cylinder head from low-pressure circuit expansion reservoir    
18 Detach right or left coolant feed line (1R or 1L) on crankcase TORQUE SPECIFICATION Bolt, coolant feed line to crankcase *BA09.40-P-1009-01W 
19 Detach right or left coolant feed line (1R or 1L) on ATL IMPORTANT Use suitable SPECIAL TOOL stop plugs to seal the openings.
INSTALLATION IMPORTANT Replace sealing ring.
 
TORQUE SPECIFICATION Bolt for coolant line attachment *BA09.40-P-1010-01W 
TORQUE SPECIFICATION Bolt, coolant feed/return line to turbocharger *BA09.40-P-1008-01W 
SPECIAL TOOL Record plug Fig 4
20 Remove right or left coolant feed line (1R or 1L)    
21 Install in the reverse order    
22 Check engine cooling system for leaktightness   AR20.00-P-1010LW 
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
23 Carry out engine test run, checking the engine for leaktightness and proper operation    
TURBOCHARGER

Number Designation Engine 276.8
BA09.40-P-1008-01W Bolt, coolant feed/return line to turbocharger Nm 9
TURBOCHARGER

Number Designation Engine 276.8
BA09.40-P-1009-01W Bolt, coolant feed line to crankcase Nm 9
TURBOCHARGER

Number Designation Engine 276.8
BA09.40-P-1010-01W Bolt for coolant line attachment M6 Nm 9
TURBOCHARGER

Number Designation Engine 276.8
BA09.40-P-1011-01W Bolt/nut for shield attachment M6 Nm 9
TURBOCHARGER

Number Designation Engine 276.8
BA09.40-P-1012-01W Bolt, turbocharger shield bracket to cylinder head M7 Nm 14
Fig 4: Identifying Record Plug (129 589 00 91 00)
G07473018Courtesy of MERCEDES-BENZ USA