Right coolant pipe, removing and installing
WARNING: This page is about a different car, the 2008 Audi RS 4 and 2007 Audi RS 4. However, it is still accessible from the selected car via links, so may be relevant.
Special tools, testers and auxiliary items required
- Spring-type clip pliers VAS 5024 A
Removing
NOTE:
- During installation, re-install all heat insulation sleeves and heat shields at the same locations.
- All cable ties opened or cut during engine removal must be reinstalled at the same locations during installation.
- Drain coolant → Cooling system, draining and filling .
- Pull rear engine cover off - arrows -.
- Remove bolts - arrows -.
- Remove air duct - 1 - and - 2 -.
- Disconnect vacuum hose - 2 - from air guide hose.
- Remove hose clamps - 1 - and - 3 - and lay air guide hose aside.
CAUTION:
Hose connectors - 4
- must not be opened.
Fig 4: Identifying Mass Air Flow (MAF) Sensor G70 Electrical Harness Connector, Secondary Air Injection (Air) Pump Hose, Vacuum Lines & Air Guide Hose
- Disconnect electrical harness connector - 4 - at Mass Air Flow (MAF) Sensor G70.
- Disconnect hose - 5 - to Secondary Air Injection (AIR) pump.
- Pull off vacuum lines - 1 - and - 6 -.
- Disconnect air guide hose - 3 - at Mass Air Flow (MAF) sensor.
- Move wiring harness clear at air filter housing.
- Remove bolts - arrows - and remove upper part of air filter housing.
- Remove clip - 2 - and remove lower part of air filter housing.
- Remove air guide hose - 3 - to secondary air injection combination valves.
- Remove bolts - 1 - and - 2 -.
- Lay aside air guide pipe to secondary air injection combination valves.
- Slide heat insulation sleeve over right coolant connection hose at rear coolant pipe to side.
- Loosen hose clips - 1 - and - 2 - with Spring Type Clip Pliers VAS 5024 A and slide coolant connection hose to side.
- Loosen hose clamp - 5 - and remove right coolant pipe from coolant hoses.
- Remove bolts - 3 - and - 4 -.
- Remove front right coolant pipe.
Installing
Installation is in reverse order of removal, note the following:
NOTE:
- During installation, re-install all heat insulation sleeves and heat shields at the same locations.
- Secure all hose connections using hose clamps appropriate for the model type .
- During installation, all cable ties must be re-installed at the same location.
- Fill with coolant Filling .
Torque specifications
| Component | Nm | |
|---|---|---|
| Right coolant pipe to cylinder head | 9 | |
| Line to secondary air injection combination valves to | Cylinder head | 9 |
| Bracket | 9 | |