Overview - High Pressure Pump

WARNING: This page is about a different car, the 2016 Audi Q5, 2015 Audi Q5, and 2014 Audi Q5. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: High Pressure Pump Overview

Courtesy of AUDI OF AMERICA, LLC

Nut
- Tightening specification: 70 Nm
- To loosen, counterhold the adapter -2- with the High Pressure Pump Shaft Holder T40248.
Adapter
- For high pressure pump chain sprocket
- Different adapters may be installed depending on the date of manufacture
- To loosen the nut -1-, use the High Pressure Pump Shaft Holder T40248 or High Pressure Pump Shaft Holder T40292
- Modify the new high pressure pump when replacing the (old) high pressure pump.
O-Ring
- Replace
High Pressure Pump
CAUTION:
Danger of malfunction caused by dirt.
- Observe, refer to CLEAN WORKING CONDITIONS .
Letting the high pressure pump run dry will damage it.
- The high pressure pump must be filled with fuel after installing, but before the engine is started for the first time, refer to FUEL TANK, FILLING WITH FUEL AFTER INSTALLING HIGH PRESSURE PUMP .
- Removing and installing, refer to HIGH PRESSURE PUMP, REMOVING AND INSTALLING .
- Perform an adaptation after replacing the high pressure pump and / or the Fuel Pressure Regulator Valve -N276-. Use a Vehicle Diagnostic Tester to do this.
High Pressure Line
- Tightening specification: 25 Nm
- Coat the thread on the union nut with clean engine oil.
- Do not change the shape of the line
- Check for damage before installing
- The high pressure line also needs to be replaced when replacing the high pressure pump.
- Installing, refer to HIGH PRESSURE LINES, REMOVING AND INSTALLING .
Fuel Supply Hose
Fuel Return Hose
O-Ring
- Replace
Fuel Temperature Sensor -G81-
- Tightening specification: 2 Nm
High Pressure Line
- Tightening specification: 25 Nm
- Coat the thread on the union nut with clean engine oil.
- Do not change the shape of the line
- Check for damage before installing
- The high pressure line also needs to be replaced when replacing the high pressure pump.
- Installing, refer to HIGH PRESSURE LINES, REMOVING AND INSTALLING .
Bolt
- Tightening specification: 22 Nm