Audi Workshop Service and Repair Manuals > A4 Mk2 > Power unit | 8-cylinder engine (4.2 ltr. 5-valve with timing chains), mechanics | Engine cooling | Removing and installing parts of cooling system | Removing and installing coolant pipe (front)

Removing and installing coolant pipe (rear) > < Coolant pipes - exploded view of components

Removing and installing coolant pipe (front)

Removing and installing coolant pipe (front)

Special tools and workshop equipment required

t	Drip tray for workshop hoist -VAS 6208-

Removing

–	Drain off coolant → Chapter.

–	Move lock carrier to service position → Chapter.

W00-10228

–	Unscrew bolts -arrows- and remove torque reaction support from engine.

–	Place drip tray for workshop hoist -VAS 6208- under engine.

A10-1510

–	Unbolt coolant pipe (front) from engine -arrows-.

Installing

Installation is carried out in the reverse order; note the following:

Note

t	Renew seals and O-rings.

t	Secure all hose connections with the correct type of hose clips (same as original equipment) → Parts catalogue.

–	Install lock carrier with attachments → Rep. Gr.50.

A19-0373

–	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

A13-0633

Component		Nm
Coolant pipe	Coolant pump	10
(front) to	Sump (top section)	10
Torque reaction support to top section of sump		42
Stop for torque reaction support to lock carrier		28

Power unit
8-cylinder engine (4.2 ltr. 5-valve with timing chains), mechanics
Engine cooling / Removing and installing parts of cooling system
Removing and installing coolant pipe (front)

Removing and installing coolant pipe (rear) > < Coolant pipes - exploded view of components