Volkswagen Golf Service & Repair Manual: Rules for cleanliness
| When working on the fuel supply and injection system,
observe the following “5 rules” for cleanliness: |
| Thoroughly clean all unions and surrounding areas before
disconnecting. |
| Place removed parts on a clean surface and cover. Use only
lint-free cloths. |
| Carefully cover opened components or seal if repairs cannot
be carried out immediately. |
| Install clean components only. Do not remove replacement
parts from packing until immediately before installing. Do not
use parts that have not been stored in their packing (e.g. in
tool boxes etc.). |
| When the system is open: Do not work with compressed air. Do
not move vehicle. |
| Make sure that no fuel gets onto the fuel hoses. Should this
occur, the fuel hoses must be cleaned immediately. |
| Protect detached electrical connections against dirt and
moisture and only connect when they are dry. |
|
Foreign objects in engine
| To prevent the ingress of foreign bodies during work on the
engine, seal open channels of the intake section and exhaust
section with suitable bungs, for example from the engine bung
set -VAS 6122-. |
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Contact corrosion can occur if unsuitable connecting
elements (screws, bolts, nuts, washers, etc.) are used.
For this reason, only connecting element ...
Other materials:
Nuts and bolts
Loosen and tighten securing bolts and securing nut for
covers and housings diagonally.
Specified torques settings are specified for unoiled bolts
and nuts.
Threads of bolts secured with locking fluid must be ...
O-ring
These O-rings seal the joints between the individual
components of the refrigerant circuit.
Use only seals that are resistant to refrigerant R134a and
its associated refrigerant oils. This is assured by using
genuine replacement parts.
...
Removing and installing fuel rail
Removing
The fuel system is under high pressure.Risk of injury due to fuel which
may spurt out.Release high pressure.
→ Chapter
Risk of functional impairment due to soiling
→ Chapter.
...
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Contact corrosion