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Removing and installing camshaft adjuster - RA05001042170X(05-2170)

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Operation no. of operation texts and work units or standard texts and flat rates

05-7201

Fig 1: Exploded View Of Camshaft Adjuster
G04677455Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Piston of cylinder 1 position to ignition TDC (step 1).
Front cover (7) remove (01-2120) .
Timing chain mark relative to exhaust and inlet camshaft sprocket (step 3).
Bolt (3), armature (4) unscrew, pull off (step 4).
Nut (6) of camshaft adjuster and cover with ring (12) unscrew, take off (step 5).
Engine 104.98: remove guide sprocket, bearing body (left-hand thread, step 6).
Engine 104.99: remove camshaft sprocket of exhaust camshaft, install (step 7).
Camshaft adjuster (parts 13, 14, 16) take off, remove (step 8).
Flanged shaft (16) at inlet camshaft install (step 9).
Positioning piston (14) and camshaft sprocket (13) fit ono flanged shaft (16) (steps 10, 11).
Cover with ring (12) and nut (6) install (step 12).
Engine 104.99: install camshaft sprocket of exhaust camshaft (step 13).
Timing chain fit onto camshaft sprocket; pay attention to marking (step 14).
Engine 104.98: install guide sprocket with bearing journals (35 Nm, step 15).
Nut (6) tighten (65 Nm, step 16).
Armature (4) install (step 17).
Front cover (7) install (01-2120) .
TIGHTENING TORQUES IN NM OR TIGHTENING ANGLE

Bolt of armature to control plunger 1st version (1) bolt+washer 7
2nd version (2) collar bolt angle of rotation 5+
90°
M20 X 1.5 nut 65
Flanged shaft to camshaft (see 05-2180)
Bolt of guide sprocket (left-hand thread, engine 104.98) 35
(1) When performing repairs, replace by 2nd version
(2) Use only once

Special tools 

Fig 2: Identifying Special Tool (001 589 72 21 00)
G04677456Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 3: Identifying Special Tool (1001 589 66 21 00)
G04677457Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Removing 

  1. Position piston of cylinder 1 to ignition TDC.
  2. Remove front cover at top, install (01-2120) .
    Fig 4: Locating Front Cover
    G04677458Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  3. Mark timing chain relative to exhaust and inlet camshaft sprockets (arrows).
    Fig 5: Marking Timing Chain Relative To Exhaust And Inlet Camshaft Sprockets
    G04677459Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  4. Unscrew bolt (3); counter-hold armature (4) at flat (arrow) for this step. Pull off armature (4).
  5. Unscrew nut (6), take off cover with ring (12).
    Fig 6: Exploded View Of Counter-Hold Armature
    G04677460Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

    Engine 104.98 

  6. Remove guide sprocket (1) together with bearing journal (2).

    IMPORTANT

    Left-hand thread 

    Mark guide sprocket on front before removing so that the direction of rotation is maintained when re-installing.

    Fig 7: Identifying Guide Sprocket Together With Bearing Journal
    G04677461Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

    Engine 104.99 

  7. Unbolt camshaft sprocket of exhaust camshaft.
  8. Take off camshaft sprocket (13) and positioning piston (14). Unscrew bolts (15 and 15a) and take flanged shaft (16) of inlet camshaft (22).
    Fig 8: Exploded View Of Exhaust Camshaft Sprocket
    G04677462Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

    Installing 

  9. Fit flanged shaft (16) onto camshaft (22). Pay attention to locating pin (21), screw on.

    IMPORTANT

    Matching of securing bolt of flanged shaft to camshaft flange (see table 05-2180).

  10. Fit positioning piston (14) onto flanged shaft (16) into specified position, turning to the left; hold up timing chain when performing this step.
    Fig 9: Identifying Piston And Flanged Shaft
    G04677463Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  11. Fit camshaft sprocket (13) onto positioning piston (14) in specified position, turning to the right; hold up timing chain when performing this step.
    Fig 10: Identifying Camshaft Sprocket And Positioning Piston
    G04677464Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  12. Fit on cover with ring (12) and screw on nut (6), but do not tighten finally at this stage.
  13. Engine 104.99: install camshaft sprocket of exhaust camshaft.

    For tightening torques see (05-2180) .

    Fig 11: Exploded View Of Exhaust Camshaft Sprocket
    G04677465Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  14. Fit timing chain onto both camshaft sprockets, pay attention to markings.
    Fig 12: Fitting Timing Chain Onto Both Camshaft Sprockets
    G04677466Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

    Engine 104.98 

  15. Insert guide sprocket (1) together with bearing journal (2) and bolt (3), screw on.

    Tightening torque 35 Nm.

    IMPORTANT

    The timing chain must be fitted on centrally on the tensioning rail.

    Bolt (3) of guide pulley "left-hand thread"  .

    Fig 13: Identifying Guide Sprocket And Bearing Journal
    G04677467Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  16. Tighten nut (6) on camshaft adjuster.

    Tightening torque 65 Nm.

  17. Fit armature (4) onto control plunger (18).

    Tighten bolt (3).

    Tightening torque (see table).

    The roll pin (arrow) in the armature (4) must be aligned with the flat face on the control plunger (18).

  18. Install front cover at top (01-2120) .
    Fig 14: Exploded View Of Control Plunger
    G04677468Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
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