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Servicing fuel filter > < Fitting locations overview

A3 Mk1

Diesel Direct Injection and Glow Plug System (TDI 4 cyl.) >07.99
Servicing diesel direct injection system
Repairing injection pump
 
A23-0038
  • ◆ Observe safety precautions
  • ◆ Observe rules for cleanliness
    => Page 23-2
  • ◆ Removing and installing injection pump => Page 23-19
  • ◆ Check and adjust commencement of injection => Page 23-27
  • Stretch bolt
    • ◆ Always replace
    • ◆ 20 Nm + 1/4 turn (90°)
  • Injection pump sprocket
  • Hub nut
    • ◆ Never slacken
  • 25 Nm
 
A23-0038
  • Supply pipe
    • ◆ From fuel filter
  • Fuel cut-off valve
    • ◆ 20 Nm
  • Pipe union
    • ◆ For return pipe
    • ◆ 28 Nm
  • Return line
    • ◆ To control valve/fuel filter
  • 25 Nm
  • Injector pipes
    • ◆ Tighten to 25 Nm
    • ◆ Remove with 3035
    • ◆ Always remove pipework completely
    • ◆ Do not alter shape
  • Pressure valve
    • ◆ 45 Nm
  • 25 Nm
 
A23-0038
  • Injector
    • ◆ For 3rd cylinder with needle lift sensor
    • ◆ Remove, install and test => Page 23-33
  • 20 Nm
  • Retainer
  • Mounting bracket
  • Copper seal
  • 12 Nm
  • Injection start valve (N108)
  • Strainer
  • O-ring
  • 25 Nm
 
A23-0038
  • Timing control cover
    • ◆ If any leaks are found, replace O-ring
  • Bracket
  • 25 Nm

Servicing fuel filter > < Fitting locations overview