skoda Workshop Repair Guides

Skoda Workshop Service and Repair Manuals

Removing and installing the cylinder head|Install > < Removing and installing the cylinder head
Removing
Removing
Conditions
l  Engine temperature should not exceed 35 °C, because the cylinder head could be twisted when slackening the screws.
l  The pistons must not be in TDC.
–  Remove air filter with air mass meter -G70- and intake hose → Chapter.
–  Remove battery and battery tray → Electrical System; Rep. gr.27.
–  Remove fan shroud for radiator fan -V7- and -V35- → Chapter.
–  Remove cylinder head cover → Chapter.
   
–  Disconnect the plug -2- from the throttle valve control unit -J338-.
–  Screw out the fixing screw of the oil dipstick -4-.
–  Detach the vacuum line from the vacuum pump.
  N15-10502
–  Unscrew screws -2, 5- and -arrows-.
–  Expose electrical cables and hoses on the left charge air pipe.
–  Release hose clamp -3- and remove left charge air pipe.
  A21-10493
–  Screw out screws -arrows- and remove pulsation dampener -2-.
–  Drain coolant → Chapter.
  A21-10478
–  Disconnect plug -4- at the coolant temperature sender -G62-.
–  Remove the coolant hoses from the connection fitting, to do so slacken the hose clamps -1- and -2-
  A19-10992
–  Disconnect plug -1- at oil pressure switch -F1-.
–  Unscrew plug -arrow-.
–  Disconnect vacuum hose -2-.
  A15-10799
–  Pull the plug connection -3- out of the fixture and disconnect.
–  Expose electrical cables at exhaust gas turbocharger.
  A26-10696
–  Release screws -arrows-.
–  Expose coolant hose -3-.
–  Loosen hose clamp -2-.
–  Disconnect the plug -1- at the charge pressure sender -G31-/intake air temperature sender -G42- and remove the right charge air pipe.
  Caution
Pay attention that the bellows of the connection pipe is not bent or overstretched. There is a risk of crack formation.
  A21-10435
–  Remove connection pipes for exhaust gas recirculation -A- with the socket insert XZN 10 -T10385-.
  N15-10443
–  Unscrew the nuts -2- of the bracket for the pre-exhaust pipe at the cylinder block.
  N26-10390
Engines with identification characters CFFB, CFHA, CFHC, CFHF, CLCA, CLCB, CLJA
–  Unscrew union nut -2-. At the same time counterhold the hexagon of the connection fitting using the wrench -T10461-.
–  Place the oil feed line -1- to the rear.
–  Release screw -4- and remove bracket -3-.
  S21-0149
Engines with identification characters CFGB, CFJA
–  Release screws -5- and -10-.
–  Release screw -4-.
–  Unscrew union nut -2-. At the same time counterhold the hexagon of the connection fitting using the wrench -T10461-.
–  Place the oil feed line to the rear.
–  Release the fixing screw -3- of the support for exhaust gas turbocharger.
  S21-0158
Continued for all engines
–  Unscrew the screw -arrow- on the rear timing belt guard.
  N15-10435
–  Slacken the screw -1- of the fixing clamp between the exhaust gas turbocharger and the pre-exhaust pipe.
  N26-10336
Engines with identification characters CFFB, CFGB, CFHA, CFHC, CFHF, CFJA, CLCB, CLJA
–  Release the screw -arrow- from the bracket at the cylinder head and push the pre-exhaust pipe to the side.
Continued for all engines
  N26-10374
–  Disconnect plug at Hall sender -G40--arrow-.
–  Remove the toothed belt from the camshaft → Chapter.
–  Remove camshaft sprocket and pull off hub for camshaft with extractor -T10052-.
–  Release the fixing nut of the timing belt tensioning pulley.
  N15-10416
–  Follow the sequence -1 … 10- for loosening the cylinder head screws.
  Note
t  The assistance of a second mechanic is required for removing the cylinder head.
t  The timing belt tensioning pulley is removed from the pin screw when lifting out the cylinder head.
t  The oil return-flow line for the exhaust gas turbocharger is detached from the support when removing the cylinder head.
–  First of all raise the cylinder head on the gearbox side and thread it out of the rear toothed belt guard. Make sure that the timing belt tensioning pulley does not fall down.
  Caution
Risk of damage to the glow plugs when placing down the cylinder head.
If the cylinder head is removed with installed glow plugs, do not place it down on the sealing surface since the glow plugs protrude slightly beyond the sealing surface.
–  Place down the cylinder head in such a way that the oil return flow line does not bend, if necessary place a wooden wedge under the exhaust manifold.
  S15-0529

Removing and installing the cylinder head|Install > < Removing and installing the cylinder head