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Home >> Mercedes Benz >> 2005 >> CL500 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Timing - 215 & 220 Chassis >> Testing & Repair >> Set the basic position of camshafts - AR05.20-P-6020 >> Set the basic position of camshafts - AR05.20-P-6020L

Set the basic position of camshafts - AR05.20-P-6020L

ENGINE 137.970 in MODELS 215.378, 220.178 /878 

Fig 1: Setting Basic Position Of Camshafts
G04839529
MODIFICATION NOTES

12.6.02 Figure modified from 80 Nm to 120 Nm Figure in BA05.10-P-1001-01H for engine 137 modified *BA05.10-P-1001-01H 
REMOVING Remove     
1 Remove cylinder head covers   AR01.20-P-5014L
2 Remove front cover on right   AR01.30-P-5700L
3 Remove cylinder shutoff oil pump   AR01.30-P-5704L
4 Check timing of engine   AR05.10-P-6858L 
5 Slacken bolt (8) of left camshaft adjuster (4) NOTES To slacken bolt (8), turn left camshaft so that the retaining device (5) can be installed free of stress at the left cylinder head. Before slackening the bolt (8), attach retaining clamp (7) to the left camshaft adjuster (4).  
    SPECIAL TOOL Double open-ended wrench Fig 4
    SPECIAL TOOL Holding device Figure
    SPECIAL TOOL Retaining clamp Figure
6 Take off retaining device (5) at left cylinder head    
7 Slacken bolt (8) of right camshaft adjuster (6) NOTES To slacken bolt (8), turn right camshaft so that the retaining device (5) can be installed free of stress at the right cylinder head.
Before slackening the bolt (8), attach retaining clamp (7) to the right camshaft adjuster (6).		  
    SPECIAL TOOL Double open-ended wrench Fig 4
    SPECIAL TOOL Holding device Figure
    SPECIAL TOOL Retaining clamp Figure
8 Take off retaining device (5) at right cylinder head    
9 Position engine to 30° after ignition TDC at cylinder 1 NOTES Rotate engine at crankshaft in direction of rotation of engine until 30° marking on belt pulley/vibration damper is aligned with marking on timing case cover.
NOTES Engine must not be cranked backwards.		  
10 Remove chain tensioner   AR05.10-P-7800L 
11 Remove pins of guide rails at left and right cylinder head IMPORTANTRemoval:  Remove only the pins at the inlet side.
IMPORTANTInstallation:  To facilitate fitting on the timing chain. Do not interchange the bolts.		  
    SPECIAL TOOL Impact extractor Fig 5
    SPECIAL TOOL Threaded pin Fig 6
12 Remove right camshaft adjuster (6) Lift timing chain off camshaft adjuster. AR05.20-P-7201L 
    SPECIAL TOOL Retaining clamp Figure
13 Remove left camshaft adjuster (4) Lift timing chain off camshaft adjuster. AR05.20-P-7201L 
    SPECIAL TOOL Retaining clamp Figure
INSTALLING Install     
14 Turn left camshaft into basic position NOTES The basic position of the camshaft is only correct if the retaining device (5) can be installed free of stress at the left cylinder head. The marking (A) of the camshaft bearing cap (2) must be aligned with the marking (B) of the camshaft (3).
IMPORTANT At 30° after ignition TDC at cylinder 1 it is possible to rotate the camshaft without the valves touching the pistons.		  
    SPECIAL TOOL Double open-ended wrench Fig 4
    SPECIAL TOOL Holding device Figure
15 Rotate right camshaft into basic position NOTES The basic position of the camshaft is only correct if the retaining device (5) can be installed free of stress at the left cylinder head. The marking (A) of the camshaft bearing cap (2) must be aligned with the marking (B) of the camshaft (3).
IMPORTANT At 30° after ignition TDC at cylinder 1 it is possible to rotate the camshaft without the valves touching the pistons.		  
    SPECIAL TOOL Double open-ended wrench Fig 4
    SPECIAL TOOL Holding device Figure
16 Install right camshaft adjuster (6) IMPORTANT Fit timing chain onto camshaft adjuster. Take off retaining clamp. AR05.20-P-7201L 
    SPECIAL TOOL Retaining clamp Figure
    TORQUE SPECIFICATION *BA05.20-P-1002-01E 
17 Install left camshaft adjuster (4) IMPORTANT Fit timing chain onto camshaft adjuster. Take off retaining clamp. AR05.20-P-7201L 
    SPECIAL TOOL Retaining clamp Figure
    TORQUE SPECIFICATION *BA05.20-P-1001-01E 
18 Take off retaining devices (5) at left and right cylinder head SPECIAL TOOL Figure
19 Install pins of guide rails NOTES Do not mix up pins.  
20 Install chain tensioner   AR05.10-P-7800L 
    TORQUE SPECIFICATION *BA05.10-P-1001-01H 
21 Check timing of engine   AR05.10-P-6858L 
22 Install front cover on right   AR01.30-P-5700L
    TORQUE SPECIFICATION *BA01.30-P-1001-01G 
    TORQUE SPECIFICATION *BA01.30-P-1002-01G 
23 Install oil pump of cylinder shutoff   AR01.30-P-5704L
    TORQUE SPECIFICATION *BA01.30-P-1003-01G 
24 Install cylinder head cover   AR01.20-P-5014L
    TORQUE SPECIFICATION *BA01.20-P-1001-01E 
TORQUE SPECIFICATION CRANKCASE VENTILATION, CYLINDER HEAD COVER TORQUE SPECIFICATION

Number Designation Engine 137, 275, 285
BA01.20-P-1001-01E Screw of cylinder head cover NM 8
TORQUE SPECIFICATION CYLINDER HEAD TORQUE SPECIFICATION

Number Designation Engine 137
BA01.30-P-1001-01G Front cover on right to cylinder head M6 NM 8
BA01.30-P-1002-01G Bolt of guide pulley to front cover on right M8 NM 30
BA01.30-P-1003-01G Cylinder shutoff secondary oil pump to left cylinder head M6 NM 8
TORQUE SPECIFICATION TIMING CHAIN, CHAIN TENSIONER TORQUE SPECIFICATION

Number Designation Engine 137
BA05.10-P-1001-01H Chain tensioner in cylinder head NM 120
TORQUE SPECIFICATION CAMSHAFT TORQUE SPECIFICATION

Number Designation Engine 137
BA05.20-P-1001-01E Bolt of left camshaft adjuster M14 x 80 1st stage NM 120
2nd stage ∠ ° 90
BA05.20-P-1002-01E Bolt of right camshaft adjuster M14 x 48 1st stage NM 120
2nd stage ∠ ° 90
Fig 2: Identifying Retaining Clamp (137 589 00 40 00)
G04839530
Fig 3: Identifying Retainer (137 589 01 40 00)
G04839531
Fig 4: Identifying Double Open-End Wrench (104 589 01 01 00)
G04839532
Fig 5: Identifying Impact Extractor (116 589 20 33 00)
G04839533
Fig 6: Identifying Threaded Bolt (116 589 01 34 00)
G04839534
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