Timing Components: Service and Repair

Engine Timing Module

Special tools, testers and auxiliary items required

• Engine and transmission holder (VAS 6095)

• Guide Pin (T10200)

• Assembly Tool (T10208)

• Torque Wrench (40-200 Nm) (V.A.G 1332)

Requirements:

• Engine and transmission removed.

• Engine is secured to the engine and transmission holder (VAS 6095). Refer to => [ Engine, Securing to the ] Engine, Securing to the Engine and Transmission Holder (VAS 6095).

Removing

- Drain the engine oil. Refer to Maintenance Procedures Rep. Gr. 03 Maintenance Procedures.

- Set the crankshaft to Top Dead Center (TDC) for cylinder 1. Refer to => [ Valve Timing, Checking ] Adjustments.

- Remove the cylinder heads. Refer to => [ Cylinder Head ] Cylinder Head.

- Separate the transmission from the engine. Refer to "Transmission.

- Remove all required hoses, wires and pipes from the engine management side.

- Remove the lower and upper oil pans. Refer to => [ Oil Pan Overview ] Description and Operation.

- Loosen the bolts for the engine timing module.


Make sure that the input shafts for the oil and coolant pumps do not fall off the cylinder block.

- Carefully pull the engine timing module off the inclined splines.

Installing

- Install the guide pins (T10200) into the threaded holes of the upper bearing bracket as shown.






- Install the engine timing module on the guide pins.

• Observe the following adjustment marks and requirements and note the inclined splines while doing so (wheels turn slightly when sliding on the module):






- The holes on the splines of the crankshaft gear and input gear for the oil pump must align as shown.






- The input shaft fits only in one position. Rotate the shaft so that the wide cutout in the hole aligns to the broad tooth on the pin.






- The hole on the drive wheel of cylinder bank 1 must align with the cast tab on the inside of the engine timing module as shown.






- Carefully slide the engine timing module on the guide pins until seated, note the mentioned adjustment marks while doing so.

- Center the engine timing module by placing the pressure piece (T10208/3) from the assembly tool (T10208/3) on the generator shaft end - A -. The pressure piece must be able to be set into the countersink without force.






- Replace the guide pins (T10200) s with bolts and tighten the bolts to 60 Nm.

- Now, tighten the bolts to 150 Nm + 90° (1/4) additional turn.