Golf Mk6
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1 - | Fuel return line |
q | Flexible. |
q | Following component must be renewed every time the fuel return lines are removed and installed: „fuel return line retaining clip“ |
q | To fuel tank. |
q | The fuel return line must not be kinked, damaged or blocked. |
q | The fuel return lines must not be dismantled. |
q | Only renew O-ring if necessary |
q | The pressure retention valve maintains a residual pressure in the return lines. |
q | This residual pressure is required for the control function of the injectors. |
q | Check pressure retention valve → Chapter. |
2 - | Fuel pressure regulating valve -N 276- |
q | Cannot be re-installed. |
q | Removing and installing → Chapter. |
q | 80 Nm |
3 - | Fuel return line |
q | Rigid. |
4 - | Bolt |
q | 10 Nm |
5 - | High-pressure fuel pump |
q | Removing and installing → Chapter. |
q | With fuel metering valve -N290- (do not open). |
q | After renewing, a first fuel filling must be performed (never allow the pump to run while it is still empty) → Chapter. |
6 - | Bolt |
q | 20 Nm + turn 180° further. |
q | Renew. |
7 - | Hub |
q | With sender ring. |
q | Use counterhold tool -T10051- to loosen and tighten. |
q | To remove, use puller -T40064-. |
8 - | Nut |
q | 95 Nm |
9 - | Toothed belt pulley on high-pressure pump |
q | Bolts 20 Nm |
q | Renew. |
10 - | Bolt |
q | 20 Nm + turn 45° further |
q | Renew. |
11 - | Bolt |
q | 10 Nm |
12 - | High-pressure line |
q | 28 Nm |
q | Between high-pressure pump and high-pressure accumulator. |
q | Install so that component is not stressed. |
Note
t | The high-pressure lines may be re-used after the following checks: |
t | Check taper seat of high-pressure line for deformation and cracks. |
t | The line hole must not be deformed, constricted or damaged. |
t | Corroded lines should no longer be used. |
13 - | Fuel pressure sender -G 247- |
q | Removing and installing → Chapter. |
q | 100 Nm |
14 - | High-pressure accumulator |
q | Removing and installing → Chapter. |
15 - | Bolt |
q | 22 Nm |
16 - | High-pressure lines |
q | Removing and installing → Chapter. |
q | 28 Nm |
q | Between high-pressure accumulator and injectors. |
q | Do not interchange. |
q | Install so that component is not stressed. |
Note
t | Observe cylinder specific markings when reusing high-pressure lines. |
t | The high-pressure lines may be re-used after the following checks: |
t | Check taper seat of respective high-pressure line for deformation and cracks. |
t | The line hole must not be deformed, constricted or damaged. |
t | Corroded lines should no longer be used. |
17 - | Seal |
q | Renew if damaged → Chapter. |
18 - | Seal |
q | Renew if damaged → Chapter. |
19 - | Injectors |
q | Removing and installing → Chapter. |
q | The following components and seals/O-rings must be renewed each time on removal/installation: „bolt for clamping piece“, „copper seal“, „O-ring of injector bore“ and „retaining clip for return connection“. |
q | The following components must also be renewed when an injector is replaced: „bolt for clamping piece“ |
q | Before re-using „high-pressure line“, perform visual check of taper seats for damage such as transverse scores or corrosion; always renew if damaged. |
q | If they are to be re-installed, injectors, high-pressure fuel lines and clamping pieces must always be re-fitted in their original positions (i.e. on the same cylinder). |
20 - | Bolt for clamp |
q | Renew |
Tighten securing bolts to a maximum of 1 to 2 Nm at first. |
After the high-pressure lines have been fitted. Final tightening torque: 8 Nm + turn 180° further. |
21 - | O-ring for fuel return lines |
q | Following component must be renewed every time the fuel return lines are removed and installed: „fuel return line retaining clip“ |
q | Only renew O-ring if necessary |
Note
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