Cylinder Head, Removing And Installing: Removing

Preliminary work may be required depending on the model. Refer to CYLINDER HEAD, REMOVING AND INSTALLING .

• During installation, all cable ties must be installed at the same location.
• Close the open channels from the intake and exhaust tract with suitable plugs for example from the : VAS6122  .

-- If not B+ cover is present on the generator. disconnect the battery to prevent short circuit. Refer to BATTERY, DISCONNECTING AND CONNECTING .

-- If required, free up the wiring harness -4-.

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-- Remove the nut -2- and bolt -1- and remove the intake manifold support.

Sub-Assembly Bracket, Version 1: 

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-- Disconnect the connectors:

1 -  For the Oil Pressure Switch -F22- -2-

3 -  For the Reduced Oil Pressure Switch -F378- -4-

5 -  For the Piston Cooling Nozzle Control Valve -N522- -7-

Sub-Assembly Bracket, Version 2: 

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-- Disconnect the connectors:

1. For the Oil Pressure Switch -F22-
2. For the Reduced Oil Pressure Switch -F378-
3. For the Piston Cooling Nozzle Control Valve -N522-

Continuation for All: 

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-- Loosen the hose clamp -1- and remove the rear coolant hose.

-- Disconnect the connector -2- for the Engine Coolant Temperature Sensor -G62-.

-- Remove the spark plugs with the : VAS6122  .

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-- Remove the bolts -arrows-.

Fig 1: Cylinder Head Loosening Sequence

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-- Remove the cylinder head bolts using the : T10070  or : T40270  in the sequence -1 through 10-.

• Make sure all wires and cables are disconnected.
• Pay attention to the tension and guide tracks when lifting the cylinder head.

-- Remove the cylinder head.

-- Lay the cylinder head on a soft surface, such as foam.

-- Seal the open channels of the intake and exhaust tract with a clean cloth or with completely clean plugs from the : VAS6122  .