audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Removing cylinder head (right-side) > < Removing and installing cylinder head cover (right-side)
Removing cylinder head (left-side)
Removing cylinder head (left-side)
Special tools and workshop equipment required
   
t  Ring spanner -3035-
Procedure
l  Engine in vehicle.
l  Lock carrier must be in service position → Chapter.
  Note
Fit all cable ties in the original positions when installing.
  Caution
To prevent damage to the electronic components when disconnecting the battery:
Observe notes on procedure for disconnecting the battery.
–  Disconnect earth cable at battery → Rep. Gr.27.
–  Drain coolant → Chapter.
–  Remove left exhaust manifold together with intermediate pipe → Chapter.
–  Take toothed belt off camshaft sprockets → Chapter.
–  Remove intake manifold (front section) → Chapter.
  W00-0269
–  Disconnect vacuum hoses -arrows- from turbocharger and mechanical exhaust gas recirculation valve.
–  Mark injector pipes according to cylinder (e.g. with felt-tip pen).
–  Disconnect injector pipes one by one with ring spanner -3035-.
  A10-0312
–  Lift off centre section of rear toothed belt cover -2-.
–  Unscrew bolts -arrows- and detach rear left toothed belt cover -3- and rear right toothed belt cover -1-.
  A15-0262
–  Disconnect both coolant hoses -arrows-.
–  Remove bolts -1- and -2-.
–  Pull off coolant pipe towards the front.
–  Unplug electrical connector at injection pump.
–  Unplug electrical connectors on glow plugs.
  A19-0091
–  Unplug electrical connector -arrow- at intake manifold pressure sender -G71-.
–  Unfasten cable clamp at cylinder head cover (left-side) and move wiring harness clear to one side.
  A10-0315
–  Unbolt mechanical exhaust gas recirculation valve from left section of intake manifold -arrow-.
  A15-0165
–  Disconnect coolant hoses -1- and -2- at coolant pipe.
–  Remove bolt -3-.
  Note
Illustration shows coolant pipe with engine removed.
  A19-0099
–  Remove bolt -arrow- at coolant pipe (left-side).
  Note
Illustration shows coolant pipe with turbocharger removed.
–  Pull coolant pipe to rear out of cylinder block.
  A15-0268
–  Disconnect return pipe from injectors -1-.
–  Unscrew nuts -arrows- for cylinder head cover and detach cylinder head cover.
  A15-0269
–  Slacken cylinder head bolts in the sequence indicated and remove bolts.
–  Take off cylinder head and place it on a soft surface (such as foam plastic).
  Caution
Risk of damage to injectors and glow plugs when putting down cylinder head.
After removal, the cylinder head must not be put down on the gasket side with the injectors and the glow plugs still installed, because the glow plugs project slightly beyond the gasket surface.
  A15-0186

Removing cylinder head (right-side) > < Removing and installing cylinder head cover (right-side)