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Audi Workshop Service and Repair Manuals

Checking compressions > < Removing cylinder head
4-Cylinder engine (5-valve), Mechanics
Removing and installing cylinder head
Installing cylinder head

Notes:

  • ◆ Always renew cylinder head bolts when assembling.
  • ◆ When performing repairs, renew seals, gaskets, self-locking nuts and bolts which have a specified tightening angle.
  • ◆ If repairing, carefully remove any remains of gasket material from the cylinder head and cylinder block. Make sure that no long scores or scratches are made on the surfaces.
 
A15-0024
  • ◆ Carefully remove any remaining emery and abrasive material.
  • ◆ Only remove new cylinder head gasket from packaging when ready for installation.
  • ◆ Handle gasket extremely carefully. Damaging the silicone layer or the indented area will lead to leaks.
  • ◆ No oil or coolant must be allowed to remain in the blind holes for the cylinder head bolts in the cylinder block.

  • ‒ → Before positioning cylinder head, set crankshaft and camshaft to TDC of No. 1 cylinder.
 
A15-0135
  • ‒ → Place cylinder head gasket in position.
    • ‒ Note position of centralizing pins in cylinder block -arrows-.
    • ‒ Check installation position of cylinder head gasket, marking: spare parts no. must be legible from inlet side.
  • ‒ Place cylinder head in position.
  • ‒ Insert cylinder head bolts and tighten by hand.

 
A15-0023
  • ‒ → Tighten cylinder head bolts in two stages in sequence shown as follows:
  • ‒ Stage 1: 60 Nm
  • ‒ Stage 2: Torque a further
        180 °(1/2 turn) with a rigid wrench.
    It is permissible to torque by
        2 x 90 °.

Note:

It is not necessary to re-tighten cylinder head bolts after repairs have been performed.

  • ‒ Install cylinder head cover.
  • ‒ Install toothed belt (adjust valve timing).

Note:

Follow all instructions for removing and installing toothed belt .

  • ‒ Install ribbed belt and ribbed belt tensioning element.
  • ‒ Install top coolant pipe.
  • ‒ Install intake manifold.
  • ‒ Adjust throttle cable
  • ‒ Fill cooling system with fresh coolant => Page 19-7.
  • ‒ After connecting battery, enter anti-theft code for radio

=> Radio operating instructions

  • ‒ Close windows fully using electric window switches.
  • ‒ Then operate all electric window switches again for at least one second in the "close" direction to activate the automatic one-touch function.
  • ‒ Set clock to correct time.
  • ‒ Perform adaption of throttle valve control part:

=> Motronic injection and ignition system (4-cylinder); Repair Group 24; Checking throttle valve control part -J338; Performing basic setting of throttle valve control part -J338

=> Motronic injection and ignition system (4-cylinder)07.96 ä;Repair group 24; Testing throttle valve control part; Adapting throttle valve control part to engine control unit

Tightening torques

Component

Nm

Support for intake manifold

to intake manifold

20

to bracket

20

to sump

20

Front exhaust pipe to exhaust manifold

30

Toothed belt tensioner to tensioning roller


25

Checking compressions > < Removing cylinder head