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Remove/install camshafts - AR05.20-P-6992GZ (ML500)

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ENGINE 113.964 in MODEL 164.175 

Fig 1: Identifying Camshafts Components (Model 164.175)
G05257414Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
REMOVING Removing    
1 Remove cylinder head covers with ignition coils   AR01.20-P-5014GZ
2 Set crankshaft to a 40° crank angle after ignition TDC of cylinder 1 and check engine timing NOTES The engine must not be turned back; otherwise the timing chain can get jammed.
IMPORTANT Rotate engine at crankshaft in direction of engine rotation of engine until scribe mark 40° on pulley / vibration damper corresponds with scribe mark on the timing case. The grooves on camshafts must be pointing toward the inner V.		 AR05.10-P-6858GZ 
    SPECIAL TOOL Right locating plate Fig 2
    SPECIAL TOOL Left locating plate Fig 3
3 Remove chain tensioner (2)   AR05.10-P-7800GZ 
4 Remove camshaft Hall sensor (B6/1)   AR15.10-P-2000GZ
5 Detach camshaft sprocket, take off IMPORTANT Tie camshaft sprocket and timing chain together with cable tie (5).  
    SPECIAL TOOL Open-end wrench Fig 4
6 Take off camshaft bearing bridge (4) IMPORTANT Observe slackening diagram! AR05.20-P-7103GZ 
7 Remove camshaft    
INSTALLING Install     
8 Insert camshaft IMPORTANT Pay attention to camshaft marking when installing camshaft.  
IMPORTANT Camshaft code number and assignment   AH05.20-N-0100-01A 
    IMPORTANT Oil the bearing surfaces!
Pay attention to correct position of cap on front end of camshaft.		  
9 Install camshaft bearing bridge (4). IMPORTANT Observe tightening procedure. AR05.20-P-7103GZ 
NOTES Information on installing the camshaft bearing bridge   AH05.20-P-2000-01AV 
10 Rotate camshaft to basic position   AR05.20-P-6020GZ 
    SPECIAL TOOL Right locating plate Fig 2
    SPECIAL TOOL Left locating plate Fig 3
11 Install camshaft sprocket IMPORTANT Take off cable tie (5)!  
    TORQUE SPECIFICATION *BA05.20-P-1001-01B 
    SPECIAL TOOL Open-end wrench Fig 4
    SPECIAL TOOL Insertion tool Fig 5
    SPECIAL TOOL Torque wrench Fig 6
12 Install camshaft Hall sensor (B6/1)   AR15.10-P-2000GZ
13 Install chain tensioner (2)   AR05.10-P-7800GZ 
14 Check engine valve timing   AR05.10-P-6858GZ 
15 Install cylinder head covers   AR01.20-P-5014GZ
CAMSHAFT

Number Designation Engine 113.940/941/942/943/944/948/961/962/963/964/965/966/967/968/969/971/980/981/982/984/986/992/995
BA05.20-P-1001-01B Bolt, camshaft sprocket M12 x 45 Stage 1 Nm 50
Stage 2 ∠° 90
Fig 2: Identifying Locating Plate (112 589 00 32 00)
G05257415Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 3: Identifying Locating Plate (112 589 01 32 00)
G05257416Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 4: Identifying Open End Wrench (112 589 00 01 00)
G05257417Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 5: Identifying Insertion Tool (112 589 01 03 00)
G05257418Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 6: Identifying Torque Wrench (001 589 72 21 00)
G05257419Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
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