125000870 - 1004E10 ENGINE, REMOVED - REMOVE CYLINDER HEAD AND OIL SUMP FOR INSPECTION - INCLUDES POSITIONING ON STAND AND REMOVAL

1. Undo the bolts (1a) and remove the ignition coils (1b). 1. Undo the bolts (1a) and remove the cam cover (1b) complete with gasket. 1. Undo the bolts (1a) and remove the crankshaft pulley (1b).2. Undo the fixing bolts (2a) and remove the lower protective timing cover (2b). Proceed with the removal    Op. 1004D40 ENGINE - POSITION ON STAND AND REMOVE.1. Disconnect the electrical connections from the ignition coils.

	Description	Connector
1	Ignition coil	See A30 IGNITION ''COIL

2. Undo the bolt (2a) and disconnect the earth lead (2b) from the cam cover.3. Undo the bolts (3a) and move bulkhead coupling (3b) aside. 1. Loosen the counter-rotating shaft toothed drive belt tensioner nut.2. Release and remove the toothed timing drive belt. 1. Loosen the nut retaining the timing belt mobile tensioner.2. Release and remove the toothed timing drive belt. 1. Undo the bolts (1a) and remove the side protective timing covers (1b). 1. Disconnect the electrical connection from the cam angle sensor and release the wiring from the fastenings on the modular intake manifold.

	Description	Connector
1	Timing sensor	See K47 TIMING SENSOR. ( CONNECTORS )

1. Undo the nut fixing the coolant supply/return pipes mounting bracket to the engine oil heat exchanger.2. Loosen the band and disconnect the coolant return pipe from the engine oil heat exchanger on the water pump rigid inlet pipe side. 1. Loosen the band and disconnect the coolant supply pipe to the engine oil heat exchanger, thermostat side. 1. Disconnect the electrical connection from the engine rpm sensor.

	Description	Connector
1	Rpm sensor	See K46 RPM SENSOR ( CONNECTORS )

2. Disconnect the electrical connection from the knock sensor.

	Description	Connector
2	Detonation sensor -1	See K50 DETONATION SENSOR 1 ( CONNECTORS )

3. Disconnect the electrical connection from the engine oil pressure warning light switch.

	Description	Connector
3	Engine oil pressure sensor (switch)	See K30 ENGINE OIL PRESSURE SENSOR SWITCH ( CONNECTORS )

1. Undo the bolts (1a) and remove the cylinder head (1b).

Do not reuse the cylinder head bolts more than four times because they undergo permanent lengthening whenever they are tightened.Replace the bolts if the number of times that the bolts have been tightenened to the cylinder head is unknown.

2. Remove the cylinder head gasket. 1. Undo the plug and drain the engine oil.

Collect the engine oil in a suitable container.

Rotate the engine through 180° on the overhaul stand.1. Undo the front and rear bolts (1a) fixing the crankcase sump using the tool (1b).

	Description	Code
1b	Spanner	1.860.833.001

2. Undo the side bolts (2a) fixing the crankcase sump using the tool (2b).

	Description	Code
2b	Spanner	1.860.834.001

3. Cut the crankcase sump sealant using the tool.

	Description	Code
3	Blade	1.870.718.000

4. Remove the crankcase sump.