seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

Checking semi-automatic toothed belt tensioning roller > < Removing
Installing
Installing
–  Loosen camshaft sprocket securing bolt a half turn.
  Note!
Never use setting bar -U-40021- as a counter-hold to loosen and tighten the camshaft. Use counter-hold -T20018-.
   
–  Place a punch (6 mm Ø) through hole in the rear of the toothed belt guard and release the camshaft sprocket from camshaft taper with a blow from a hammer.
  E13-0043
–  Check whether TDC mark on flywheel and reference mark are aligned.
Engine removed:
  V23-0177
–  Fit adjustment device -U-20010- as shown.
–  Set adjustment device to 38 mm -arrow A-.
–  Turn crankshaft until flywheel TDC marking aligns with point of setting device -arrow B-.
–  Fit toothed belt on crankshaft toothed belt sprocket, injection pump sprocket, intermediate shaft sprocket and tensioning roller (note direction of rotation).
–  Fit camshaft sprocket into toothed belt and secure sprocket so that the camshaft can still turn.
  E13-0035
–  Tension toothed belt. To do this, turn pin wrench -U-30009/A- clockwise until the notch and the raised point align -arrows-.
  Note!
If the eccentric has been turned too far the tensioning roller must be relieved completely and retensioned. The eccentric must never be turned back when it has been turned too far.
–  Tighten securing nut to 20 Nm.
–  Check TDC mark on flywheel again.
–  Tighten camshaft sprocket securing bolt to 45 Nm.
  Note!
Never use setting bar -U-40021- as a counter-hold to loosen and tighten the camshaft.Use counter-hold -T20018-.
–  Remove setting bar -U-40021- from the camshaft and remove pin -U-20003- from injection pump sprocket.
–  Turn crankshaft two rotations in engine D.O.R. until crankshaft is set to TDC No. 1 cylinder again.
–  Check if the TDC mark on flywheel the setting bar on camshaft the pin in injection pump sprocket the tensioning roller setting (notch/raised mark) align/are fitted correctly.
  E13-0041
–  If the notch and raised mark are not opposite one another -arrows-, tension thetensioning roller further. To do this, hold tensioning roller tight with pin wrench -U-30009/A-, release securing nut, then turn eccentric clockwise further until the notch and the raised mark are opposite one another and tighten the securing nut to 20 Nm.
–  Turn crankshaft two rotations in engine D.O.R. until crankshaft is set to TDC No. 1 cylinder again.
–  Repeat check.
–  Install toothed belt lower guard, vibration damper/belt pulley (note fixing), ribbed belt pulley tensioning roller, coolant pump belt pulley and cylinder head cover.
–  Fit engine mounting onto cylinder block and tighten the securing bolt to45 Nm.
  E13-0041
–  Install right-hand assembly mounting to engine complete.
A → Note = 40 Nm + 1/4 turn (90°) further
B = 50 Nm
C → Note = 20 Nm + 1/8 turn (45°) further
1)  Renew
  Note!
The turning further angle can be measured with protractor -T20030-.
–  Install cover for intake pipes → Chapter, Dismantling and assembling intake pipes.
–  Install intake pipe between air cleaner and throttle valve housing using pliers -T20029- for spring-type clips.
–  Install upper toothed belt guard.
  N10-0053
–  Install pendulum support free of stress.
A = 50 Nm (tighten on nut)
B → Note = 20 Nm + 1/4 turn (90°) further
2)  Renew
  Note!
The turning further angle can be measured with protractor -T20030-.
–  Install ribbed belt → Chapter.
–  Checking injection pump commencement of delivery: → Chapter
  N10-0029

Checking semi-automatic toothed belt tensioning roller > < Removing