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Home >> Mercedes Benz >> 2016 >> SL400 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Air Intake, Turbocharging - 231 Chassis >> Testing & Repair >> Remove/install resonance intake manifold - AR09.20-P-1961RKA

Remove/install resonance intake manifold - AR09.20-P-1961RKA

ENGINES 276 in MODEL 231 

Fig 1: Resonance Intake Manifold Remove/Install Component (1 Of 3)
G11128411Courtesy of MERCEDES-BENZ USA
Fig 2: Resonance Intake Manifold Remove/Install Component (2 Of 3)
G11128412Courtesy of MERCEDES-BENZ USA
Fig 3: Resonance Intake Manifold Remove/Install Component (3 Of 3)
G11128413Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install    
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
NOTES Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
1 Switch off ignition    
2 Remove front engine cover    
3 Remove air filter housing (8). TORQUE SPECIFICATION *BA09.10-P-1001-01M 
    TORQUE SPECIFICATION *BA09.10-P-1002-01M 
4 Loosen clamp (3) for intake hose (2) on hot film MAF sensor (B2/5) INSTALLATION IMPORTANT Replace clamp (3).  
5 Pull off purge line (4) from resonance intake manifold (1)    
6 Detach crankcase breather line (5) on intake hose (2) and unclip on resonance intake manifold (1)    
7 Remove crankcase breather line (11) on resonance intake manifold (1) INSTALLATION IMPORTANT Install new seal.  
8 Disconnect electrical connector at pressure sensor downstream of throttle valve (B28/7)    
9 Disconnect electrical plug connector on throttle valve actuator (M16/6)    
10 Unclip electrical line on throttle valve actuator (M16/6) IMPORTANT The retaining clip for electrical line is located under the throttle valve actuator (M16/6).  
11 Remove vacuum line (7) on resonance intake manifold (1)    
12 Remove vacuum line (6) to vacuum pump    
13 Disconnect electrical connection on intake manifold intake air temperature sensor (B17/1)    
14 Disconnect electrical connection on intake manifold selector drum switchover valve (Y77/3) and intake manifold resonance flap switchover valve (Y77/2)    
15 Remove cover (1a) on resonance intake manifold (1) TORQUE SPECIFICATION *BA09.20-P-1008-01T 
16 Remove screw/bolts (1s) for resonance intake manifold (1) on left intermediate flange (1l) and right intermediate flange (1r) TORQUE SPECIFICATION *BA09.20-P-1001-01T 
17 Remove resonance intake manifold (1) IMPORTANT Cover left intermediate flange (1l) and right intermediate flange (1r) with rags.
INSTALLATION IMPORTANT Replace seals (13).
 
  Only perform operation steps 18 to 23 for removal of the left intermediate flange (1l) or the right intermediate flange (1r) of the resonance intake manifold (1)     
18 Remove screw/bolts (14, 15) on right intermediate flange (1r) TORQUE SPECIFICATION *BA09.20-P-1002-01T 
    TORQUE SPECIFICATION *BA09.20-P-1003-01T 
19 Remove right intermediate flange (1r) INSTALLATION IMPORTANT Replace seals (13).  
20 Remove bracket (1) from EGR line (16) IMPORTANT Turn bracket (1h) to the left to remove.
INSTALLATION IMPORTANT Ensure correct seating of bracket (1h).
 
21 Remove screw/bolt (17) TORQUE SPECIFICATION *BA14.20-P-1005-01M 
22 Remove screw/bolts on left intermediate flange (1l) TORQUE SPECIFICATION *BA09.20-P-1002-01T 
23 Remove left intermediate flange (1l) IMPORTANT Cover intake ports with a rag.
INSTALLATION IMPORTANT Replace seals (12).
 
24 Install in the reverse order    
INSPECT Checking     
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
25 Carry out an engine test run and check resonance intake manifold (1) for leaks    
AIR FILTER

Number Designation Engine 276
BA09.10-P-1001-01M Screw/bolt, air filter to cylinder head cover Nm 9
BA09.10-P-1002-01M Screw/bolt, air filter to air intake pipe support brace Nm 9
INTAKE MANIFOLD

Number Designation Engine 276
BA09.20-P-1001-01T Screw/bolt, air intake pipe to intermediate flange Nm 9
BA09.20-P-1002-01T Screw/bolt, intermediate flange to cylinder head Nm 9
BA09.20-P-1003-01T Screw/bolt, intermediate flange to intermediate flange Nm 9
BA09.20-P-1008-01T Screw/bolt, model plate cover to air intake pipe Nm 2
EXHAUST GAS RECIRCULATION

Number Designation Engine 276
BA14.20-P-1005-01M Screw/bolt, EGR line to bracket Nm 12