Oil Pump, Engine Codes CBTA and CBUA

Oil Pump, Engine Codes CBTA and CBUA

• In Model Year (MY) 2008, the oil pump drive chain was changed from a roller chain to a toothed chain. The gears are now wider and the (T03005/1) must also be used when securing the oil pump.

Special tools, testers and auxiliary items required

• Torque wrench 5-50 Nm (VAG 1331)

• Counter holder tool (T10172)

• Oil pump align plate (T03005)

• Oil pump shim (T03005/1)

Removing

- Remove the upper oil pan. Refer to --> [ Upper Oil Pan ] Upper Oil Pan.

- Tension the oil pump drive chain tensioner - 1 -, secure it using the (T10115) and remove it.





- Remove the bolt - 1 -.





Hold the sprocket - 2 - in place using the (T10172).

- Remove sprocket from the oil pump and remove the oil pump bolts.

Installing

• Crankshaft is secured

- Replace the intake pipe seal and install the oil pump onto the cylinder block, tightening the bolts by hand.





- Place the sprocket with the lettering facing outward onto the oil pump shaft and secure it with a new bolt - 1 - (drive chain not yet installed).

Tightening specification: 20 Nm + 90° (1/4 turn) additional turn

- Loosen bolts - 2 through 4 -. Oil pump must be able to be slid easily.





- Check the (T03005). If there are still protective shields on the magnets, remove them.

- Check that there are no shavings located on magnets of the (T03005). The contact surfaces on the crankshaft, the tools and the sprocket must be clean.

- Place the (T03005/1) and the (T03005) on the crankshaft pins and secure both with two bolts - 1 - from the crankshaft pulley/vibration damper.





Tightening specification: 30 Nm.

Oil pump is activated by magnets.

- Remove the (T40069).





- Press the crankshaft in same direction as axial bearing end play checking, - arrow 1 - and secure it with a - shim - as shown in the illustration.





- Press the oil pump lightly toward the chain drive - arrow 2 -.

• This work step is important in order to guarantee correct position of the sprockets to each other.

- In this position, first tighten bolts - 2 - and - 3 - and then bolt - 4 - to 25 Nm.





- Install the (T40069) again. Crankshaft must only be rotated slightly around Top Dead Center (TDC) point for this. Otherwise there is a risk the valves rest on the pistons.

- Remove the (T03005) and the (T03005/1).

- If a new oil pump is installed, fill the oil pump with engine oil via the intake pipe channel and rotate the oil pump several times through.

- Place the oil pump drive chain onto the oil pump sprocket.

- Install the upper oil pan. Refer to --> [ Upper Oil Pan ] Upper Oil Pan.

- Install the guide rail - 2 -, relieve the tension on the oil pump drive chain tensioner - 1 - and remove the (T10115).





• Make sure that chain lays correctly in the guide rail - 4 - and in the tensioning rail - 3 -.

- Adjust the valve timing. Refer to --> [ Valve Timing, Adjusting ] Adjustments.

The rest of the installation follows the reverse of the removal procedures. When doing this note the following:

• Remove the (T40069) from the cylinder block and install the locking bolt. Tightening specification: 30 Nm.

• Fill the cooling system. Refer to --> [ Draining and Filling ] [1][2]Cooling System, Draining and Filling.