Timing Components: Adjustments

Valve Timing Adjusting

Special tools, testers and auxiliary items required

• Counter-holder tool (T10172)

• Camshaft locator bar (T10193) for cylinder bank 1

• Camshaft locator bar (T10194) for cylinder bank 2

• Camshaft tool (T10195)

• Multi point socket (T10198)

• Clamping device (T10199)

Procedure

- Remove engine and transmission. Refer to --> [ Engine, Removing ] Engine Removing.

- Remove the tandem and fuel pumps from the cylinder heads. Refer to --> [ Tandem and Fuel Pump ] Tandem and Fuel Pump.

- Remove noise insulation --> [ (Item 14) Noise insulation ] Engine Valley Components Overview and covers --> [ (Item 13) Cover ] Engine Valley Components Overview from cylinder heads.

- Remove acoustic covers and cylinder head cover.

- Turn engine using counter holder (T10172) until at least one camshaft locator bar can be inserted.





- Place clamping device (T10199) onto wheel of secured camshaft and loosen camshaft wheel bolt. Wheel can now be turned freely on the camshaft.

If only one camshaft locator bar could be inserted:

- Turn engine using counter holder (T10172) until camshaft locator bar for other cylinder bank can be inserted.

- Place clamping device (T10199) on camshaft gear and loosen its bolt. Wheel can also now be turned freely on the camshaft.

- Remove vibration damper --> [ (Item 4) Vibration damper ] Service and Repair. For this, use counter holder (T10172) with threading pins (T10172/1).

- Install camshaft tool (T10195) onto crankshaft stub. Observe alignment pin while doing so.





- Now carefully rotate crankshaft until the pin on the camshaft tool (T10195) is inserted into alignment bore.

- Place clamping device (T10199/1) as shown and tighten its clamping screws to 70 Nm.





- Place a torque wrench (40 to 200 Nm) (VAG 1332) into the square of the clamping device and push with 80 Nm in opposite direction of engine rotation direction to eliminate play from gear drive.

• Cylinder bank 1: - in direction of arrow -

• Cylinder bank 2: - against direction of arrow -

- Maintain the specified force and tighten bolt of camshaft gear to a tightening specifications of 50 Nm using socket (T10198).

- Remove clamping device (T10199/1).

- Place clamping device (T10199) on camshaft gear.





• Make sure that clamping device (T10199) makes contact flush on cylinder head.

- Tighten clamping device (T10199) screws to 40 Nm.

- Then tighten camshaft gear using socket (T10198). Tightening Specifications 150 Nm + 1/4 turn (90°).

- Remove clamping device (T10199).

- Remove anchors from camshafts and crankshaft.

- Continue turning crankshaft two rotations in direction of engine rotation until the crankshaft is again at Top Dead Center (TDC) for cylinder 1.

- Check whether anchors for camshafts as well as for crankshaft can be inserted simultaneously.





- Check the position of the pump pistons in the pump injector elements. Refer to --> [ Pump Injector Unit Pump Piston, Checking Position and Adjusting ] Pump Injector Unit Pump Piston, Checking Position and Adjusting.