1032B16 TOOTHED TIMING BELT - R R WITH ENGINE REMOVED - Alfa - 156 - eLearn

3239100 - 1032B16 toothed timing belt - r r with engine removed

) Position the engine on a suitable workbench.1. Use a spanner, in an anti-clockwise direction, on the moving tensioner to loosen the tension of the engine components single drive belt.2. Remove the single drive belt.

1. Disconnect the electrical connection for the air conditioning compressor.

	Name	Connector
1	Air conditioning compressor "on" electromagnet	L20

1. Release the electrical wiring from the band on the timing cover.2. Disconnect the electrical connection for the cam angle sensor.

	Name	Connector
1	Timing sensor	K47

3. Disconnect the electrical connections from the injectors.

	Name	Connector
3	Injector	N70

4. Undo the cable duct fixing bolts.

1. Releasethe electrical wiring from the bands fastening it to the engine coolant supply reservoir coolant return pipe.2. Disconnect the electrical connections from the heater plugs.

	Name	Connector
2	Heater plug	A40

3. Disconnect the electrical connection from the fuel pressure sensor.

	Name	Connector
3	Fuel pressure sensor	K83

Move the engine wiring to the side.1. Loosen the band and disconnect the engine oil vapour recovery pipe (1a) from the engine oil filler, then release it from the retaining band (1b).

1. Undo the bolts (1a) and remove the crankshaft pulley (1b).2. Undo the bolt (2a) and remove the single drive belt fixed tensioner (2b).

1. Undo the bolts (1a) and remove the timing gear covers (1b).

1. Undo the bolts (1a) and remove the bracket on the engine for the reaction rod (1b).

1. Loosen the nut securing the timing belt mobile tensioner.2. Prise off and remove the timing belt.

1. Loosen the band and disconnect the coolant return pipe from the engine coolant reservoir, thermostat side.

1. Loosen the band and disconnect the coolant outlet pipe from the cylinder head, engine coolant return pipe to the coolant reservoir side. 2. Undo the bolts (2a) and remove hose (2b) carrying coolant to the coolant supply reservoir.

1. Disconnect the pipe from the injectors to the fuel return manifold, fuel return manifold side.2. Loosen the band and disconnect the pipe from the pressure pump to the fuel return manifold, fuel return manifold side.3. Undo the bolts (3a) and remove the fuel return manifold (3b).

1. Undo the connectors (1a), (1b) and remove the pipe from the pressure pump to the fuel manifold (1c).

Use a new pipe from the pressure pump to the fuel manifold when refitting.

2. Manually push springs (2a) and disconnect the pipe from the injectors to the fuel recovery manifold (2b), injectors side and remove it.3. Undo the connectors (3a), (3b) and remove the pipes from the fuel manifold to the injectors (3c).

Use new piping from from fuel manifold to injectors upon reassembly.

4. Undo the bolts (4a) and remove the single fuel manifold pipe (4b) complete with fuel pressure sensor (4c).

1. Undo the nuts (1a) and remove the brackets (1b) and injectors (1c).

Start the removal beginning with the injector for cylinder no. 1 and continuing with the injectors for cylinders 2, 3 and 4.

1. Undo the bolts (1a) and remove the camshaft housing assembly (1b).Remove the gasket.

Refitting ( Removing

) Place the upper cylinder head gasket back in its housing.1. Remove the plugs (1a) and fit the camshaft timing tools (1b) in the camshaft housing.

Check that the tools, marked with the letter 'A', are correctly inserted in the housings in the camshafts.

	Name	Country
1b	Gauge	1.870.986.900

Remove the inlet side camshaft timing tool and tighten the plug.

1. Place the camshaft housing assembly (1a) back in its housing and secure it tightening the bolts (1b) to the recommended torque.

	Fastening	Component	Ø	Value(daNm)
1b	-	-	-	-

Loosen the exhaust side camshaft toothed drive pulley fixing bolt.

1. Undo the bolt for the crankcase front cover shown in the diagram.Temporarily fit the timing drive belt on the drive pulley.2. Fit the tool (2a) and secure it gauged bolts (2b)

To allow the engagement of the locating dowel on the timing drive belt drive pulley in the opening in the tool, rotate the crankshaft using small movements.

	Name	Country
2a	Template	1.860.905.000

	Name	Country
2b	Calibrated screw	1.860.905.010

1. Completely fit the timing belt.2. Use a screwdriver to lever in the hole (2a) until the reference on the tensioner (2b) lines up with the reference hole (2c) and, in this position, tighten the belt tensioner nut (2d) to torque.

	Fastening	Component	Ø	Value(daNm)
2d	Nut	MOBILE TIMING TENSIONER	M10	4.2 ÷ 5.2

Tighten the exhaust side camshaft toothed drive pulley fixing bolt to the recommended torque.

	Fastening	Component	Ø	Value(daNm)
-	-	-	-	-

Remove the timing tools.

	Name	Country
-	Gauge	1.870.986.900

Remove the exhaust camshaft template because the inlet side one has already been removed.

	Name	Country
-	Template	1.860.905.000

	Name	Country
-	Calibrated screw	1.860.905.010

Rotate the crankshaft through two revolutions.Check once again that the timing is correct by refitting the timing tools.

Only fit the exhaust camshaft side template because the inlet side one is not accessible.

Check that the tensioning references on the timing belt tensioner are aligned.Tighten the bolt for the crankcase front cover previously removed.Tighten the plug in the camshaft housing for fitting the exhaust side timing tool.1. Refit the injectors (1a) complete with brackets (1b) and secure by tightening nuts (1c) to the specified torque.

Start the refitting beginning with the injector for cylinder no. 4 and continuing with the injectors for cylinders 3, 2 and 1.

	Fastening	Component	Ø	Value(daNm)
1c	-	-	-	-

1. Place the single fuel manifold pipe (1a), complete with fuel pressure sensor (1b), back in its housing and secure it tightening the bolts (1c) to the recommended torque.

	Fastening	Component	Ø	Value(daNm)
1c	-	-	-	-

2. Fit the new pipes from the fuel manifold to the injectors and secure them using the connectors without tightening them.3. Tighten the connectors for the pipes from the fuel manifold to the injectors, injector side, to the recommended torque using a suitable spanner.

	Fastening	Component	Ø	Value(daNm)
3	-	-	-	-

4. Tighten the connectors for the pipes between the fuel manifold and the injectors, fuel manifold side to the recommended torque using a suitable spanner.

	Fastening	Component	Ø	Value(daNm)
4	-	-	-	-

Clean the threaded seats for the above mentioned pipe on the manifold and the injectors using heptane.

5. Place the pipe from the injectors to the fuel recovery manifold (5a) back in its housing and connect it to the injectors pushing it until the clips (5b) can be heard clicking into place. 6. Place the pipe from the pressure pump to the single fuel manifold back in its housing and fix it using the connectors without tightening them.7. Tighten the connector for the pipe from the pressure pump to the single fuel manifold, pump side, to the recommended torque using a suitable spanner.

	Fastening	Component	Ø	Value(daNm)
7	-	-	-	-

8. Tighten the connector for the pipe from the pressure pump to the single fuel manifold, fuel manifold side, to the recommended torque using a suitable spanner.

	Fastening	Component	Ø	Value(daNm)
8	-	-	-	-

Clean the threaded seats for the above mentioned pipe on the manifold and the pressure pump using heptane.

Place the fuel return manifold pipe back in its housing and fix it using the bolts.Connect the pipe from the pressure pump to the fuel return manifold, fuel return manifold side and tighten the band.Connect the pipe from the injectors to the fuel return manifold, fuel return manifold side.Place the coolant return pipe to the engine cooling system reservoir back in its housing and tighten the bolts.Connect the coolant oulet pipe from the cylinder head, engine coolant return pipe to the supply reservoir side and tighten the band. Connect the engine coolant return pipe to the supply reservoir, thermostat side and tighten the band.1. Fit the bracket on the engine for the reaction rod (1a) and fix it tightening the bolts (1b) and (1c) to the recommended torque.

	Fastening	Component	Ø	Value(daNm)
1b	-	-	-	-

	Fastening	Component	Ø	Value(daNm)
1b	-	-	-	-

Place the protective timing side covers back in their housings and secure them using the bolts.1. Place the engine components single drive belt fixed tensioner (1a) back in its housing and fix it tightening the bolt (1b) to the recommended torque.

	Fastening	Component	Ø	Value(daNm)
1b	-	-	-	-

Fit the flywheel lock.

	Name	Country
-	Counter-torque	1.860.846.001

2. Place the crankshaft pulley (2a) back in its housing and secure it by tightening bolts (2b) to the recommended torque.

	Fastening	Component	Ø	Value(daNm)
2b	-	-	-	-

Remove the flywheel lock.

	Name	Country
-	Counter-torque	1.860.846.001

Connect the oil vapour recovery pipe to the engine oil filler, tighten the band and secure it using the fastening.Place the engine wiring back in its housing.Connect the electrical connection to the fuel pressure sensor.Connect the electrical connections to the heater plugs.Fasten the electrical wiring to the bands on the coolant return pipe to the engine coolant supply reservoir.Tighten the cable duct fixing bolts.Connect the electrical connections to the injectors.Connect the electrical connection to the cam angle sensorFasten the electrical wiring to the band on the timing cover.Connect the electrical connection to the air conditioner compressorFit the single engine component belt by adjusting the moving tensioner using a wrench.