Variable valve timing unit, checking and adjusting Volvo V70 II

Variable valve timing unit, checking and adjusting

Check and adjust the variable valve timing unit. See: Variable valve timing unit, checking and adjusting

Scheme 622

Install

1. front timing cover
2. the cable duct to the mountings on the right suspension turret
3. the auxiliaries belt
4. the expansion tank
5. the servo oil reservoir
6. the bleed hose to the expansion tank. Tighten the clamp.

Check that the hoses are positioned correctly.

Connect the connectors for the ABS sensor at the right suspension turret and for the coolant level sensor in the expansion tank.

Scheme 623

Install

1. the starter motor
2. the pipe screw for the water-heated crankcase ventilation at the rear of the cylinder head. Use new seal washers. Tighten to 26 Nm .
3. the camshaft position sensor (CMP) housing and trigger wheel
4. a new cover at the rear of the intake camshaft
5. the upper engine stabilizer brace.

Scheme 624

Install

1. bracket and lifting eyelet for the engine stabilizer brace bracket
2. the ignition coils and ground terminals according to earlier markings.

Connect the connector for the variable valve timing solenoid.

1. the clamp for the positive lead at the lifting eyelet bracket
2. the plastic intake pipe to the mass air flow (MAF) sensor. Tighten the clamp.

Connect the connector to the mass airflow (MAF). Clamp the wiring at the front of the air cleaner (ACL).

Scheme 625

Clean the intake manifold gasket face to the cylinder head.

Install a new gasket on the cylinder head. Secure with the three screws in the lower row.

Lower and twist the intake manifold so that the fuel pressure line goes through the cavity in the intake manifold.

Note. Be very careful so that the fuel delivery pipe is not damaged.

Route the crankcase ventilation hose through the cavity in the intake manifold.

Install

1. the pipe screw for the crankcase ventilation on the underside of the intake manifold. Use new seal washers. Tighten to 26 Nm .
2. the rest of the screws holding the intake manifold to the cylinder head. Tighten to 19 Nm .
3. the hose to the evaporative emission system (EVAP) valve.
4. the control hose for the turbocharger (TC) by-pass valve
5. the brake vacuum hose.
6. the crankcase ventilation hose to the top of the camshaft cover. Use a new clamp
7. the cover over the ignition coils
8. the upper timing cover
9. the upper engine coolant hose for the engine and radiator. Tighten the clamp
10. the screw holding the dip stick pipe to the intake manifold.

Connect the connector for the electronic throttle module (ETM).

1. the charge air pipe between the throttle body (TB) and the charge air cooler (CAC). Remove the seal. Tighten the clamp.

Scheme 626

Install

1. the fuel rail. Use new screws.

Press the quick-release connector for the fuel pressure line until it clicks.

1. the clamp for the injector wiring at the rear of the cylinder head
2. the protective cover over the injector connectors
3. the charge air pipe over the engine. Tighten the pipe using the three screws on the engine. Tighten the clamps.