Camshaft, Removing And Installing
Special tools and workshop equipment required
- Counterhold - Crankshaft Sprocket 3415
- Torque Wrench 1331 5-50Nm VAG1331
- Torque Wrench 1332 40-200Nm VAG1332
- Sealant AMV 174 004 01
Removing
-- Remove the upper toothed belt guard.
-- Turn the crankshaft the direction of engine rotation and move the camshaft sprocket to Top Dead Center (TDC) cylinder 1.
- The marking on camshaft sprocket must line up with the arrow on toothed belt guard -arrows-.
-- Loosen the tensioning roller and remove the toothed belt from the camshaft sprocket.
-- Then turn the crankshaft slightly backward.
-- Remove the camshaft sprocket. To loosen the bolt, hold the camshaft sprocket firmly using the Counterhold - Crankshaft Sprocket 3415.
-- Remove woodruff key from the camshaft.
-- Remove the cylinder head cover.
-- Remove bearing caps 5, 1 and 3 first. Loosen bearing caps 2 and 4 in alternation and in diagonal sequence.
The numbers are stamped into the bearing cap.
Installing
Conditions
- The pistons must not be positioned at TDC.
- When installing the camshafts, the cam lobes for cylinder 1 must point upward.
When installing, make sure the bearing cap is centrally positioned. Before installing, set bearing caps in place and determine installation position.
-- Lubricate the running surfaces of both camshaft.
-- Install the camshaft.
-- Tighten bearing caps 2 and 4 alternately and in a diagonal sequence to 20 Nm.
-- Lightly coat the contact surface of bearing cap 1 with Sealant AMV 174 004 01.
-- Install bearing cap 3, 1 and 5 and tighten them to 20 Nm.
-- Mount the woodruff key into the camshaft.
-- Install camshaft sprocket. To tighten the bolt, hold the camshaft sprocket firmly using the Counterhold - Crankshaft Sprocket 3415.
Tightening specification: 100 Nm
Danger of causing damage to the pistons and the valves.
- When turning camshaft, pistons may not be at TDC for any cylinder.
Assemble in reverse order of disassembly.
-- Install the toothed belt, refer to TOOTHED BELT, REMOVING AND INSTALLING .
After installing new hydraulic valve lifters, the engine may not be started only after approximately 30 minutes. Hydraulic equalization elements must seat themselves. Otherwise the valves will impact the pistons.