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Remove/install camshaft bearing bridge - AR05.20-P-7103GZ

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ENGINE 113.964 in MODEL 164.175 

Fig 1: Identifying Camshaft Bearing Bridge Components
G05257426Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 2: Identifying Camshaft Bearing Bolts Tightening Sequence
G05257427Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
REMOVINGINSTALLING Remove/install    
1 Remove cylinder head covers with ignition coils (6)   AR01.20-P-5014GZ
2 Check the engine valve timing NOTES The engine must not be turned backwards; otherwise the timing chain can get jammed.
IMPORTANT Rotate engine at the crankshaft in running of rotation of the engine until scribe mark 40° on pulley/ vibration damper corresponds with scribe mark on the timing case.
Grooves in the camshafts must point towards the "inner V".		 AR05.10-P-6858GZ 
3 Remove chain tensioner (5)   AR05.10-P-7800GZ 
4 Remove the left camshaft bearing bridge (7) and the right camshaft bearing bridge (8) NOTES Tie camshaft sprocket and timing chain together with a cable strap to prevent the timing chain from skipping.
IMPORTANT Loosen the bolts in stages in a manner opposite to the tightening pattern (see picture).		  
NOTES Information on installing camshaft bearing bridge   AH05.20-P-2000-01AV 
    TORQUE SPECIFICATION Bolt, camshaft bearing bridge to cylinder head M7 x 45 *BA05.20-P-1002-01B 
    TORQUE SPECIFICATION Bolt, camshaft bearing bridge to cylinder head M7 x 84 *BA05.20-P-1004-01B 
5 Install in the reverse order    
CAMSHAFT

Number Designation Engines 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-1002-01B Bolt, camshaft bearing bridge to cylinder head M7 x 45 Stage 1 Nm 15
Stage 2 ∠° -
BA05.20-P-1004-01B Bolt, camshaft bearing bridge to cylinder head M7 x 84 Stage 1 Nm 10
Stage 2 ∠° 90
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