Removing And Installing Thermostat - Audi A8 2003 Workshop Manual

8-cylinder TDI engine (4.2 ltr. 4-valve common rail), mechanics - Edition 12.2013
– Insert drive shaft -arrow- for coolant pump in the mounting for
the oil pump on engine.
– Fit coolant pump in mounting on sump (top section).
Note
To fit the drive flange onto the hexagon flats of the drive shaft,
use your finger to turn the impeller of coolant pump until the cool‐
ant pump can be pressed on all the way.
– Install thermostat ⇒ page 225
– Install coolant pipes (front)
– Install poly V-belt ⇒ page 60
– Install radiator cowl
– Install radiator ⇒ page 242
Note
Do not reuse coolant.
– Fill cooling system ⇒ page 216
Tightening torques
Component
Coolant pump to housing
Coolant pump housing to sump (top section)
Coolant pipe (left-side) to coolant pump
Thermostat housing to coolant pump housing
Retaining clip for hydraulic line to sump
Bracket for charge air cooler to body
Air pipe to engine cross member
Hose clips (9 mm wide)
Hose clips (13 mm wide)
1.5

Removing and installing thermostat

Removing
– Drain off coolant ⇒ page 215
– Remove air hose (front left) -arrows-.
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⇒ page 227 .
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⇒ page 246 .
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with respect to the correctness of information in this document. Copyright by AUDI AG.
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5.5
1. Removing and installing parts of cooling system
Audi A8 2003 ➤
225