Porshe 911 (997). Manual - part 78

 

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Porshe 911 (997). Manual - part 78

 

 

correspondan con el contenido de la imagen de la pantalla.

Diagnostic system: reading out fault memory and activating systems

Installing hydraulic valve for camshaft timing

469

- Removing hydraulic valve for valve lift control
- Installing hydraulic valve for valve lift control

Removing hydraulic valve for valve lift control

Removing hydraulic valve for valve lift control

ATTENTION

Risk of oil contamination and blocked oil bores

Faulty engine parts, engine damage

• 

→ Absolute cleanliness is essential when working on hydraulic valves.

Note

Handle the hydraulic valve with care; do not turn it at the valve tip or at the safety contact.

• 

A seal against leaks cannot be ensured if there is damage in the area of the retainer plate, therefore
handle the pliers indicated with care.

• 

Hydraulic valve for valve lift control

Hydraulic valve for valve lift control

470

Removing and installing shield

1. Remove the side shield on the relevant side of the engine. To do this, unscrew the two M6 x 16 Torx

screws -arrows- .

Hydraulic valve for valve lift control

2. Disconnect cable plug on hydraulic valve -1- by pressing the clip and pulling off the cable

plug.

Holder for solenoid hydraulic valves

3. Unscrew two M6 x 20 inner Torx screws -2- at the valve holder and remove the holder -B- along with the

screws.

Diagnostic system: reading out fault memory and activating systems

Removing hydraulic valve for valve lift control

471

Retainer plate with seal - installation position of valve for camshaft timing and valve lift control

4. Carefully pull the hydraulic valve with retainer plate -2- out of the cylinder head cover. Make sure

that the front spring does not remain in the cylinder head. Observe installation position of the
hydraulic valve (position of cable plug connection).

Installing hydraulic valve for valve lift control

Installing hydraulic valve for valve lift control

Note

Always replace O-ring on hydraulic valve and retainer plate with integrated seal.

• 

Observe installation position of hydraulic valve.

• 

1. Before installation, coat the O-ring and the retainer plate seal with engine oil. Then carefully fit the

hydraulic valve with retainer plate into the cylinder head cover.

Holder for solenoid hydraulic valves

2. Position two M6 x 20 inner Torx screws complete with holder -B- on the valve and tighten the

screws. → Tightening torque: 7.5 ftlb.

Hydraulic valve for valve lift control

Diagnostic system: reading out fault memory and activating systems

 Installing hydraulic valve for valve lift control

472

 

 

 

 

 

 

 

Content   ..  76  77  78  79   ..