volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Checking hydraulic bucket tappets > < Renewing valve stem seals
4-Cyl. diesel engine, Mech.
Servicing valve gear
Removing and installing camshaft
 
V23-0169

Special tools, testers and auxiliary items

  • ◆ V.A.G 1331 Torque wrench (5...50 Nm)

Removing

  • ‒ Remove upper toothed belt guard and cylinder head cover.
  • ‒ → Turn crankshaft to TDC No. 1 cylinder -arrow-.
  • ‒ Loosen tensioner.

Engines with semi-automatic tensioning roller:

  • ‒ Remove relay roller.
  • ‒ Take off toothed belt.
  • ‒ Loosen camshaft sprocket securing bolt 1/2 turn. Release camshaft sprocket from camshaft taper by tapping with a hammer (using a drift through rear toothed belt guard opening).
  • ‒ Take off camshaft sprocket.
  • ‒ First remove bearing caps 5, 1 and 3. Then loosen bearing caps 2 and 4 alternately and diagonally.

Installing

Notes:

  • ◆ When installing the camshaft No. 1 cylinder cams must point upwards.
 
V15-0098
  • ◆ → When installing the bearing cap note offset, before installing camshaft fit bearing caps and determine fitting position.
  • ‒ Oil camshaft running surfaces.
  • ‒ Tighten bearing caps 2 and 4 alternately and
    diagonally to
         20 Nm.
  • ‒ Install bearing caps 5, 1 and 3 and also tighten to
         20 Nm.
  • ‒ Locate bearing cap 5 by tapping lightly on the end of the camshaft.
  • ‒ Install camshaft sprocket.
  • ‒ Install and tension toothed belt .

Note:

When new tappets have been installed the engine must not be started for about 30 minutes. Hydraulic compensation elements must settle (otherwise valves will strike pistons).

Checking hydraulic bucket tappets > < Renewing valve stem seals