Porshe 911 (997). Manual - part 32

4. Unscrew cylinder-head screws with spacer sleeves 9613.

Lifting gear carrier out of crankcase

5. Screw in retaining eyes on retaining device, lift gear carrier out of the crankcase half using a workshop

crane or engine lifter and secure in a vice.

6. Remove accessories on gear carrier.

Gear carrier components overview with intermediate shaft

Overview of gear carrier with intermediate shaft

Diagnostic system: reading out fault memory and activating systems

Removing crankshaft, preliminary work

285

Item

No.

Designation

Number

Removal

Fitting

1

M6 x 40 fastening screw with

captive washer

3

Tightening torque [Nm]

(ftlb.)

2

Guide rail

1

Visually inspect for scoring or

damage and replace if necessary

3

Snap ring

1

Replace

4

Shim 10 x 16 x 1.2

1

5

Tensioning rail

1

5a

Lining for tensioning rail

1

Visually inspect for scoring or

damage and replace if necessary

6

Intermediate shaft

1

Check toothing for signs of

damage

7

Chain for camshaft driving

mechanism, cylinder 1-3

1

Check for visible damage, replace

if necessary

8

Chain for camshaft driving

mechanism, cylinder 4-6

1

Check for visible damage, replace

if necessary

9

Chain for intermediate shaft

driving mechanism

1

Check for visible damage, replace

if necessary

10

Oil guide fastening screw

(Torx, M6 x 16)

6

Replace

micro-encapsulated screws

11

Seal for oil guide

2

Replace

12

Oil guide

1

13

Gear carrier

1

Fit on retaining device 9607

Fit on retaining device

9607

Chain guide, intermediate shaft

7. Remove tensioning rail and guide rail. Unscrew three M6 x 40 hexagon-head bolts and remove tensioning

rail -1- . Remove circlip and washer -2- , remove guide rail -3- .

8. Remove intermediate shaft with timing chains and place on a clean surface. Check timing chains and

toothing on intermediate shaft for signs of damage, replace if necessary.

Diagnostic system: reading out fault memory and activating systems

Removing crankshaft, preliminary work

286

Oil guide, intermediate shaft

9. Remove oil guide on gear carrier. Unscrew six M6 x 16 Torx screws -1- and remove guide with seals.

Removing crankshaft

Removing crankshaft

ATTENTION

Engine damage due to incorrect allocation of connecting rod and connecting rod cap

→ Remove connecting rods one-by-one

→ When disassembling connecting rod cap, allocate it immediately to associated connecting rod

→ Mark installation position and cylinder allocation on connecting rod and connecting rod cap, using an

electric engraver, for example

→ Do not use prick punches or number embossing tools

Gear carrier components overview with crankshaft

Diagnostic system: reading out fault memory and activating systems

 Removing crankshaft

287

Overview of gear carrier

Item

No.

Designation

Number

Removal

Fitting

1

Connecting rod bolt, M9

x 1.25

6

Always replace

2

Connecting rod cap

3

Screw on immediately to associated

connecting rod

3

Connecting rod bearing

shell

6

Replace, grease

(Optimol Optipit)

4

Crankshaft bearing shell

14

Replace, coat with

new engine oil

5

Oil spray jet

6

Clean, replace if damaged

Press in right to the

stop using a plastic

mandrel (ø 4 mm)

Diagnostic system: reading out fault memory and activating systems

Removing crankshaft

288