Audi Workshop Service and Repair Manuals

Removing and installing coolant pipe (rear) Special tools and workshop equipment required

t  Hose clip pliers -VAS 6340- Removing   Note All cable ties which are released or cut open when removing must be fitted in the same position when installing. –  Drain off coolant → Chapter. –  Move lock carrier to service position → Chapter. –  Remove coolant pipe (right-side) → Chapter. –  Remove support bracket -10-222 A- from engine compartment.   Note The support bracket was necessary to remove the coolant pipe (right-side), however, it would be a hindrance for the remaining procedures.

–  Detach coolant hoses -1- and -2-. –  Unbolt coolant expansion tank -arrow-. –  Unplug electrical connector for coolant shortage indicator switch -F66- at expansion tank (below).

–  Remove electrical connectors -1 ... 4- from bracket (on left side of bulkhead). –  Unbolt bracket from bulkhead.

–  Detach vacuum line -arrow- going to brake servo at bulkhead.

–  Disconnect coolant hose going to heat exchanger at coolant pipe (rear) on engine.

–  Disconnect coolant hose from Y piece -arrow-.

–  Unplug electrical connector -arrow- for Hall sender 2 -G163- at cylinder head (left-side).   Note In the following illustrations shown from rear with engine removed.

–  Unplug electrical connector -arrow- for Hall sender -G40- at cylinder head (right-side).

–  Unplug electrical connector -2- at coolant temperature sender -G2-/-G62-. –  Unscrew nut -1- and detach electrical wiring harness at coolant pipe (rear).

–  Release hose clip -1- using hose clip pliers -VAS 6340-. –  Release hose clip -6- using hose clip pliers -VAS 6340- and disconnect coolant hose. –  Remove bolts -2 ... 5-. –  Detach coolant pipe (rear). Installing Installation is carried out in the reverse order; note the following:   Note t  Renew O-rings. t  Secure all hose connections with the correct type of hose clips (same as original equipment) → Parts catalogue. t  Fit all cable ties in the original positions when installing. –  Before installing, clean and smooth down sealing surfaces for O-rings as required. –  Coat new O-rings with acid-free grease (vaseline), fit coolant pipe (rear) and tighten. –  Install coolant pipe (right-side) → Chapter. –  Install lock carrier with attachments → Rep. Gr.50.

–  Allow stop for torque reaction support to rest on rubber buffer for torque reaction support under its own weight and tighten bolts -arrows-. –  Install bumper cover (front) → Rep. Gr.63. –  Fill cooling system → Anchor. –  Check headlight adjustment → Booklet803 or → Booklet805. Tightening torques

Component	Nm
Coolant pipe (rear) to cylinder head	10
Clips to coolant pipe (rear)	10