Porshe 911 (997). Manual - part 73

Primary chain tensioner

5. Remove primary chain tensioner (hexagon socket a/f 32).

Chain tensioner, cylinders 1 - 3

6. Remove chain tensioner, cylinder bank 1 - 3 (hexagon socket a/f 32).

Threaded joint with collar nut on bearing cover for intermediate shaft

Note

To make it easier to remove the bearing cover, spray the sealing surface with anti-rust agent.

• 

Note

To make it easier to remove the bearing cover, spray the sealing surface with anti-rust agent.

• 

Diagnostic system: reading out fault memory and activating systems

Removing bearing cover for intermediate shaft - from engine number 695 07 476

449

7. Loosen M12 hexagon collar nut (a/f 22) on bearing cover for intermediate shaft with special tool

assembly tool P 9673/1

 and screw it off → Threaded joint with collar nut on bearing cover for

intermediate shaft .

8. Unscrew the three M6 x 20 fastening screws (coated) on the intermediate-shaft flange. Replace screws

during installation and clean thread in crankcase.

Puller on bearing cover: view when removed

Note

Remove bearing cover using special tool puller 9673. If this is not available, lever the bearing cover
out carefully with two screwdrivers so as not to damage the sealing surfaces. Turning several times to
the left and right loosens the bearing cover.

• 

After removing the bearing cover, do not press the threaded bolts of the intermediate shaft.

• 

Note

Remove bearing cover using special tool puller 9673. If this is not available, lever the bearing cover
out carefully with two screwdrivers so as not to damage the sealing surfaces. Turning several times to
the left and right loosens the bearing cover.

• 

After removing the bearing cover, do not press the threaded bolts of the intermediate shaft.

• 

9. Position special tool puller 9673 at the bearing cover grooves and secure by turning the locking lever

anti-clockwise.

Removing bearing cover

10.

Diagnostic system: reading out fault memory and activating systems

Removing bearing cover for intermediate shaft - from engine number 695 07 476

450

Pull the slide hammer on the puller a number of times against the stop nuts while countering the
tool at the same time with the other hand.

Levering out bearing cover

11. If the puller is not available, lever the bearing cover out carefully using two screwdrivers (or

angle screwdrivers). Move the bearing cover a number of times to the left and right to make
levering easier. Do not damage the sealing surfaces.

Installing bearing cover for intermediate shaft

Installing bearing cover for intermediate shaft - up to engine number 695 07
475

ATTENTION

Risk of damage due to particles of dirt.

Oil bores/oil ducts can become blocked up.

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→ When working on the engine, absolute cleanliness is essential.

→ Lay removed engine parts on a clean base and cover them without fail.

→ Use the cover for dust protection when fitting the engine NR.165 on the engine assembly support.

Note

Clean working area of bore for bearing cover and crankcase thoroughly using acetone or solvent
naphtha.

• 

1. Before installing the new bearing cover, check the fitted bore (axial attachment surface, bore chamfers) on

the crankcase for sharp edges and burrs. They should be removed with an oilstone or a polishing cloth.
Remove any existing residue and clean the bore with a clean cloth soaked in solvent naphtha or acetone.

Diagnostic system: reading out fault memory and activating systems

 Installing bearing cover for intermediate shaft

451

Note

Replace bearing cover or sealing ring for bearing cover → 152355 Replacing sealing ring for
intermediate shaft.

• 

Note

Always observe specified engine number range.

2. Grease fitted bore in crankcase and new bearing cover (with new sealing ring) with special grease

Optimoly MP3 (available from Porsche Parts Service) and place bearing cover in position.

Note

Replace collar nut M8 x 1 and coated M6 screws for bearing cover.

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3. Position three new, coated M6 x 20 screws on the crankcase and pull in the bearing cover by

screwing in the screws uniformly. Tighten the screws. → Tightening torque: 10 (7.5 ftlb.) Nm

Collar nut for bearing cover

4. Position new M8 x 1 collar nut on the threaded pin of the intermediate shaft. Then tighten the nut

using special tool socket wrench 9110. At the same time, counter with a screwdriver in the slotted
threaded pin of the intermediate shaft. → Tightening torque: 12 (9 ftlb.) Nm +1 (0.5 ftlb.) Nm

Primary chain tensioner

5. Insert primary chain tensioner with new sealing ring (hexagon a/f 32) and tighten to the specified torque.

→ Tightening torque: 80 (59 ftlb.) Nm

Diagnostic system: reading out fault memory and activating systems

Installing bearing cover for intermediate shaft - up to engine number 695 07475

452