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Checking hydraulic bucket tappets > < Renewing camshaft oil seal

Golf Mk4

Removing and installing camshaft
   
Removing and installing camshaft
Special tools and workshop equipment required
t  Counterhold tool -3415-
t  Torque wrench -V.A.G 1331-
t  Torque wrench -V.A.G 1332-
t  Sealant -AMV 174 004 01-

Removing
–  Remove engine cover.
–  Remove intake manifold upper part.
  Note
Seal intake ports in the lower part of intake manifold using a clean cloth.
–  Remove toothed belt guard - upper part.
   
–  Set camshaft toothed belt pulley to TDC No. 1 cylinder by turning crankshaft. Mark on camshaft sprocket must align with -arrow- on toothed belt guard.
–  Release tensioning roller and remove toothed belt from camshaft sprocket.
–  Turn crankshaft back slightly.
  A13-0077
–  Remove camshaft sprocket. When loosening camshaft sprocket, hold with counterhold tool -3415-.
–  Remove woodruff key from camshaft.
–  Remove cylinder head cover.
–  First remove bearing caps 5, 1 and 3. Loosen bearing caps 2 and 4 alternately and diagonally.
Installing
Condition
l  The pistons must not be positioned at TDC.
  Note
t  When camshaft is installed, No. 1 cylinder cams must point upwards.
  N15-0454
t  When installing bearing caps, note that caps are not symmetrical; before installing bearing cap, set in place and determine fitting position.
Procedure
–  Oil camshaft running surfaces.
–  Insert camshaft.
–  Tighten bearing caps 2 and 4 alternately and diagonally to 20 Nm.
–  Lightly coat contact surface of bearing cap 1 with sealant -AMV 174 004 01-.
–  Install bearing caps 3, 1, and 5 and tighten to 20 Nm.
–  Insert Woodruff key in camshaft.
  V15-0098
–  Install camshaft sprocket. When tightening camshaft sprocket bolt, hold with counterhold tool -3415-.
Torque setting: 100 Nm.
  Note
When camshaft is turned, crankshaft must not be at TDC. Danger of damage to valves and piston crowns.
Further assembly is basically the reverse of the dismantling procedure.
Installing toothed belt and adjusting valve timing → Chapter.
  Note
When new bucket tappets have been installed the engine must not be started for about 30 minutes. Hydraulic compensation elements must settle (otherwise valves will strike pistons).
  N15-0454

Checking hydraulic bucket tappets > < Renewing camshaft oil seal