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Toothed belt semiautomatic tensioning roller: testing > < Toothed belt: removing and installing, tightening|Removal

Leon Mk2

Installation
Installation
Test conditions
l  The crankshaft pinion is fixed to crankshaft with the bolt and two washers.
l  The camshaft pinions are locked with the -T10016- in the holes in the cylinder head and secured against involuntary rotation.
Work sequence
   
–  Position the crankshaft at top dead centre cylinder 1. The shortened tooth should coincide with the mark on the seal-holder cover-arrow-.
  Note!
Remember that there are two TDC marks on the oil pump/ seal holder cover, a small one for 4V engines (right side) and a longer one for 2V engines (left side). Do not confuse the marks when setting the crankshaft in TDC. The engine could be severely damaged.
–  Fit the toothed return belt. The loose section of the toothed belt should be below. If the toothed belt has been used, check the mark of rotation direction.
Install the toothed return belt tensioning roller, as follows:
  N13-0147
–  Turn the toothed return belt tensioning roller clockwise by the inner hexagon -1- towards the window of the marks (the tensioning roller is loose).
–  Press the lower part of the toothed return belt upwards with the tensioning roller and fit the mounting bolt of the tensioning roller.
–  Hand tighten the mounting bolt of the roller. The protrusion on the base plate should fit into the hole of the cylinder head -2-.
  N13-0364
–  Then tighten the toothed belt; to do so, turn the tensioning roller counter-clockwise by the inner hexagon -pos. 1- until the indicator arm -2- coincides with the protrusion on the window of the marks -arrow-.
–  Tighten the mounting nut of the tensioning roller.
   Tightening torque: 20 Nm
  Note!
Secure the camshafts with the -T10016- until the main toothed belt is fitted.
–  Fit the main toothed belt counter-clockwise, starting with the water pump, then tensioning roller, crankshaft, return roller and intake camshaft pinion. If the toothed belt has been used, check the direction of rotation mark.
If the tensioning roller has been removed, proceed as follows:
  N13-0365
–  Turn the main toothed belt tensioning roller; To do so, turn the roller counter-clockwise by the inner hexagon to the position shown -arrow-.
  N13-0366
–  Install the tensioning roller and tighten the nut by hand; the bolt -2- of the seal holder cover should be inside the groove in the support plate -1- of the tensioning roller.
–  Turn the roller with an Allen key in the direction of the arrow until the indicator arm -3- coincides with the mark on the support plate of the tensioning roller -arrow-.
–  Tighten the mounting nut of the tensioning roller.
   Tightening torque: 20 Nm
–  Remove the -T10016- from the camshaft pinions.
–  Turn the crankshaft over twice in the direction of engine rotation until it is back at top dead centre for cylinder 1.
–  Then, check the adjustment of the toothed belt and the position of the tensioning rollers. If necessary, retighten the toothed belts.
–  Install the toothed belt shield.
–  Reinstall the crankshaft pulley, taking the following into account:
t  Replace the bolt that holds the pulley/crankshaft pinion.
t  When installing the pulley, check the mounting to the pinion.
t  Tighten the new and oiled mounting bolt to 90 Nm + 1/4 turn (90°).
–  Install the Poly-V belt → Chapter.
  Note!
When installing the Poly-V belt, make sure it is correctly seated on the pulleys.
–  Install the soundproofing sump.
–  Consult the fault memory → Chapter.
  N13-0180

Toothed belt semiautomatic tensioning roller: testing > < Toothed belt: removing and installing, tightening|Removal