Removing and installing guide rails in cylinder heads - RA05001203450X(05-3450)

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

Preceding work:

Front covers removed (01-2120) .

Fig 1: Identifying Guide Rails In Cylinder Heads Remove/Install Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Crankshaft	rotate to 30° after ignition TDC at cylinder 1 (step 1).
Camshaft sprockets	mark relative to timing chain (step 2).
Chain tensioner (1)	remove, install (05-3100) .
Right exhaust camshaft sprocket	unscrew, screw on (step 4).
Right intake camshaft (8)	rotate with wrench 104 589 01 01 00, slacken timing chain, tension (step 5).
Right guide rail (4)	remove, install (step 6).
Left intake camshaft (9)	rotate with wrench 104 589 01 01 00, slacken timing chain, tension (step 7).
Left guide rail (6)	remove, install (step 8).

TIGHTENING TORQUES IN NM

Torx T40 ⁽¹⁾

Exhaust camshaft sprocket to camshaft

Initial torque Tightening angle

90°

Torx T30 ⁽²⁾

⁽¹⁾	Do not re-use bolt after tightening to correct angle.

⁽²⁾	Replace 1st version by Torx T40 when performing repairs.

Special tools

Fig 2: Identifying Special Tool (104 589 01 01 00 05)

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Fig 3: Identifying Special Tool (001 589 72 21 00 00)

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Fig 4: Identifying Special Tool (001 589 65 09 00 03 07 32)

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Fig 5: Identifying Special Tool (000 589 01 10 00 00)

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NOTE: Take off right cylinder head cover (01-0500) and right front cover (01-2120) in order to remove the right guide rail.

Fig 6: Identifying Right Guide Rail

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Removing and installing

Rotate crankshaft to 30° after ignition TDC at cylinder 1.
NOTE: In this position the camshafts can be rotated without the valves coming into contact with the piston crown.

Fig 7: Identifying Cylinder Position
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Mark all four camshaft sprockets and the timing chain with dots of paint (arrows).
Remove chain tensioner (05-3100) .

Fig 8: Locating Camshaft Sprockets And Timing Chain Marks
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Unscrew right guide rail (4): unscrew right exhaust camshaft sprocket (5), remove.
Installation note

Install exhaust camshaft sprocket (5) with timing chain fitted, pay attention to colored marking and to tightening torque.

Fig 9: Identifying Right Guide Rail And Right Exhaust Camshaft Sprocket Screws
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Right guide rail (4): rotate right intake camshaft (8) in direction of rotation of camshaft with wrench (25) 104 589 01 01 00. Slacken timing chain.
Pull right guide rail (4) off bearing pin, remove.
Installation note

Fit timing chain onto intake camshaft sprocket (12) (pay attention to coloured marking), tension and install guide rail (4).

Fig 10: Locating Right Guide Rail And Right Intake Camshaft
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Left guide rail (6): rotate left intake camshaft (9) in direction of rotation of camshaft with wrench (25) 104 589 01 01 00. Slacken timing chain.
Pull left guide rail (6) off bearing pin (6a).
Installation note

Fit timing chain onto intake camshaft sprocket (13) and exhaust camshaft sprocket (3) (pay attention to colored markings), install guide rail (6).

Rotate exhaust and intake camshafts in opposite direction of rotation of camshaft with wrench (25) 104 589 01 01 00. Tension timing chain.

Fig 11: Rotating Exhaust And Intake Camshafts In Opposite Direction Of Rotation Of Camshaft With Wrench
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.