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Home >> Mercedes Benz >> 1995 >> E420 >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Complete Engine - 140 Chassis) >> Repair & Adjustments (Gasoline Engines) >> Remove/install timing case cover (01-2100) >> Removing and installing timing case cover - RA01001042100X(01-2100)

Removing and installing timing case cover - RA01001042100X(01-2100)

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:

Warning instructions when hood open (01-0085) 

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

01-8000-8009

  1. Models 124, 129 with engines 104.98 
    Fig 1: Identifying Timing Case Cover Remove/Install Components (1 Of 2)
    G04676652Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  2. Model 140 
    Fig 2: Identifying Timing Case Cover Remove/Install Components (2 Of 2)
    G04676653Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
    Ground cable at battery disconnect, connect, encode radio, model 140 normalize power windows.
    Air cleaner and intake air scoop remove, install (REMOVING AND INSTALLING AIR CLEANER - AR09.10-P-1050D ).
    Bottom engine compartment panel remove, install.
    Viscous fan clutch remove, install (20-3120) .
    Securing bolts of belt pulleys:
    fan clutch (210), coolant pump (273),
    power steering pump (284)    		 slacken, tighten (step 6).
    Poly V-belt remove, install (13-1200) .
    Belt pulley: fan clutch (210), coolant pump (273), power steering pump (284) take off, fit on (step 8).
    Belt pulley, vibration damper remove, install (03-3420) .
    Cap of cooling system open (release pressure).
    Model 124, 129 engine 104.98: remove heating water return pipe (270), install, replace seal (26) (step 11).
    Opening of coolant pump seal.
    Front cover at top remove, install 01-2120 .
    Timing chain with camshaft sprockets mark with colored markings.
    Bracket of tensioning device (213) slacken, swivel, seal and attach (step 14).
    Model 140 engine 104.99: unbolt bracket at timing case cover, bolt on.
    Model 124, 129 engine 104.98: unbolt power steering pump, swivel, bolt on (step 15).
    Air pump (94) detach, attach (remains in vehicle with lines/wiring connected).
    Fan bearing bracket (217) remove, engine 104.98 replace seal (97), install 21 Nm (step 17).
    TDC sensor (100) remove, install (step 17).
    Generator (326) with support (93) remove, install (steps 18, 19).
    NOTE: Insert bolts for support (93) until they make contact, tighten front bolt first of all.
    Timing case cover (96) at front and bottom unbolt, bolt on; M6: 10 Nm, M8: 21 Nm (step 20).
    Timing case cover (96) with TDC sensor bracket (102) take off, seal and fit on (pay attention to dowel pins 96a), (steps 21 to 23).
    Engine run, check for leaks.
    TIGHTENING TORQUES IN NM

    Securing bolts of oil sump M6 10
    Timing case cover to crankcase M6 9
    M8 21
    Securing bolts of belt pulley M6 10
    Securing bolts of tensioning device 75

    Special tool 

    Fig 3: Identifying Special Tool (001 589 72 21 00)
    G04676654Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

    Removing, installing 

    1. Disconnect ground cable at battery.

      Installation note 

      Encode radio, model 140 normalize power windows.

    2. Pull air scoop off the air filter and remove.
    3. Remove air cleaner, install (REMOVING AND INSTALLING AIR CLEANER - AR09.10-P-1050D ).
    4. Unscrew bottom engine compartment panel.
    5. Remove viscous fan clutch (20-4200) .
    6. Slacken bolts (arrows).
    7. Remove poly V-belt (13-1200) .
    8. Unscrew bolts (arrows), take off belt pulleys of fan clutch (210), coolant pump (273) and power steering pump (284).
    9. Remove belt pulley, vibration damper and hub (03-3420) .
    10. Open cap of cooling system (release pressure).
      Fig 4: Locating Slacken Bolts
      G04676655Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

      Models 124, 129 

    11. Remove heating water return pipe.

      Installation note 

      Replace seal between heating water return pipe (25) and coolant pump.

      Fig 5: Identifying Heating Water Return Pipe (1 Of 2)
      G04676656Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

      Hose remains connected. Seal opening at the coolant pump.

      Fig 6: Identifying Heating Water Return Pipe (2 Of 2)
      G04676657Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
    12. Remove front cover at top 01-2120 .
    13. Mark timing chain with camshaft sprockets with colored dots.

      Models 124, 129 

    14. Slacken bolt (211) and unscrew bolts (215, 651, 652) together with spring washers.

      Swivel bracket (213).

      Fig 7: Identifying Slacken Bolt And Swivel Bracket
      G04676658Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

      Model 140 

      Slacken bolts (3 and 4) and unscrew. Swivel bracket (213). Unscrew bolts (1) for bracket of combination support (2).

      Fig 8: Identifying Unscrew Bolts Bracket Of Combination Support
      G04676659Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

      Installation note models 124, 129 

      Apply sealant 002 989 45 20 to the front and rear of the mounting hole (arrow) of the bracket (213).

      Fig 9: Locating Mounting Hole
      G04676660Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

      Models 124, 129 

    15. Unscrew bolts (277, 278). Swivel power steering pump (280) in direction of arrow.
    16. Unscrew air pump from bracket (remains on vehicle with pipes connected).
      Fig 10: Identifying Unscrew Bolts And Swivel Power Steering Pump
      G04676661Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
    17. Unscrew bolts (214, 214a), tightening torque 21 Nm, and remove fan bearing bracket (217).

      Unscrew nut (99).

      Take off TDC sensor (100) together with cable and place to the side.

      NOTE: TDC sensor bracket (102) remains on timing case cover.

      If timing case cover is replaced, set TDC sensor (03-3450) .

      Fig 11: Identifying Unscrew Bolts, Fan Bearing Bracket And Nut
      G04676662Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
    18. Unplug cable connector at generator.
    19. Unbolt generator together with support, take off.

      Installation note 

      Insert side and front bolts for support until they make contact, tighten front bolts first of all so that support is installed free of stress.

    20. Unbolt timing case cover from crankcase and oil sump.
    21. Detach timing case cover together with bracket of TDC sensor.
      NOTE: Do not damage oil sump gasket!

      If necessary, replace oil sump gasket. Examine radial seal; replace, if necessary.

    22. Clean sealing surfaces of crankcase and of timing case cover. Apply an even coating of sealant 002 989 47 20 to the sealing surface of the timing case cover.
      NOTE: The timing case cover is fixed in place by two roll pins on the crankcase.

      Pay attention to projection of 6 mm (arrow).

      Do not damage oil sump gasket. First of all, tighten bolts of oil sump, tightening torque 10 Nm. Timing case cover to crankcase:

      M6 9 Nm

      M8 21 Nm

      Fig 12: Locating Roll Pins Projection
      G04676663Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

      Models 124, 129 

    23. Replace seal (97).
      Fig 13: Identifying Seal
      G04676664Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
    24. Install in the reverse order.
    25. Check oil level in engine and adjust to correct level.
    26. Run engine and check for leaks.

    C. Models 202, 210 

    Preceding work:

    Front cover at top removed 01-2120 .

    Support of air pump/generator removed (01-2110).

    Model 202 with tensioning device 1st version: tensioning device removed (13-3200) .

    Viscous fan clutch bearing bracket removed (20-3140) .

    Belt pulley/vibration damper removed (03-3420) .

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

    01-8000-8009

    Fig 14: Identifying Timing Case Cover Remove/Install Components
    G04676665Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
    Timing chain to camshaft sprockets with mark with colored marking (arrows).
    Bracket (101) unbolt, bolt on (21 Nm).
    Timing case cover (96) at front and bottom unbolt, bolt on (M6 10 Nm; M8 21 Nm).
    Timing case cover (96) remove, install.
    DANGER Do not damage oil sump gasket (arrows).
    Roll pins (96a) do not lose, see note.
    Sealing surfaces clean.
    Sealing surfaces coat with sealant 002 989 47 20.
    DANGER Ensure that no sealant gets into the oil chamber (96b) of the chain tensioner.
    Radial shaft seal (8) examine, replace if necessary (03-3240) .
    Engine run and check for leaks.
    TIGHTENING TORQUE IN NM

    M8 bolts of timing case cover to crankcase 21
    M6 bolts of oil sump to timing case cover 10

    Special tool 

    Fig 15: Identifying Special Tool (001 589 72 21 00)
    G04676666Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
    NOTE: The timing case cover is fixed in position by two roll pins at the crankcase.

    Pay attention to projection of 6 mm (arrow).

    Fig 16: Locating Roll Pins Projection
    G04676667Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
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