Porshe 911 (997). Manual - part 15

 

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Porshe 911 (997). Manual - part 15

 

 

Crank drive, pistons

Crank drive, pistons

9 - Pistons, connecting rods

• 

10 - Bearing housing with intermediate shaft

• 

11 - Bearing housing halves with crankshaft

• 

Disassembling engine - up to crankcase

Disassembling engine - up to crankcase

ATTENTION

Risk of damage due to particles of dirt.

Oil bores/oil ducts can become blocked up.

• 

→ 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.

WARNING

Coolant is corrosive and hazardous to health.

Skin and eye irritation

• 

Diagnostic system: reading out fault memory and activating systems

 Disassembling engine - up to crankcase

217

→ Wear protective gloves and goggles.

→ If you come into contact with coolant, wash off immediately with plenty of warm water.

WARNING

Pentosin is hazardous to health

Danger of material damage and injury

• 

→ Wear protective gloves and goggles.

→ If the eyes or skin come into contact with the fluid, wash immediately with water.

→ Collect emerging Pentosin. Clean hoses which come into contact with Pentosin thoroughly.

→ Use caps to protect the wiring against soiling and damage.

Note

The bearing housing remains screwed to the retaining device when the bearing housing and
intermediate shaft are disassembled.

• 

Engine support

1. Fasten the engine support 9589 to the crankcase using special tool mounting elements 9590. Refit

engine with support on the engine assembly support.

Oil drain plug

Diagnostic system: reading out fault memory and activating systems

Disassembling engine - up to crankcase

218

2. Drain engine oil. Unscrew the oil drain plug (hexagon socket a/f 8) → 170155 Engine oil and oil filter

change - section on "Draining" .

Engine carrier

3. Remove engine carrier. Unscrew 4 M10 collar nuts and 1 M6 x 20 Torx screw.

4. Undo 3 M8 x 12 fastening screws on the belt pulley for the servo pump (do not

remove).

Belt tensioner

5. Remove drive belt . Mark the running direction with a coloured pen, turn the tensioning roller (a/f

24) clockwise, hold still and simultaneously remove the belt from the drive pulleys. Check the belt
for damage, replace if necessary. → 137819 Removing and installing drive belt - section on
"Removing".

6. Only for Tiptronic: remove guide for drive belt, to do this, unscrew two M6 x 20 Torx screws.

Vacuum lines

7. Unclip hose assembly on the intake distributor, cylinder side 1

- 3:

Diagnostic system: reading out fault memory and activating systems

Disassembling engine - up to crankcase

219

View of engine, side 4-6

8. Unplug crankcase ventilation line on pre-separator, cylinder 4-6.

Ignition coil shield

9. Remove shields for ignition coils on the left and the right, unscrew 2 M6 x 16 fastening

screws.

View of engine, side 1-3

10. Disconnect electrical plug connections (engine wiring harness) on engine and unclip wiring harness on

the fuel collection pipes.

Three injection valve plugs per cylinder side -1-

• 

Three ignition coil plugs per cylinder side -2-

• 

Two plugs for camshaft adjustment hydraulic valves, two for valve lift adjustment hydraulic valves
-3-

• 

Plug forengine coolant temperature sensor, two plugs for oil pressure sensor on cylinder head cover 4
- 6 -4-

• 

Two hall sender connectors

• 

Plugs for speed sender

• 

Plug for electrical switch-over valve (intake distributor 1-3)

• 

Ground cable for front face of cylinder 4-6 (one M6 x 12 Torx screw)

• 

Diagnostic system: reading out fault memory and activating systems

Disassembling engine - up to crankcase

220

 

 

 

 

 

 

 

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