Audi TT (2007 year). Manual — part 42
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
2.5
Checking oil pressure
Special tools and workshop equipment required
♦ Oil pressure tester -V.A.G 1342-
Procedure
• Oil level OK
• Engine oil temperature approx. 80 °C.
– Remove oil pressure switch -F1-
.
– Connect oil pressure tester -V.A.G 1342- to threaded hole for
oil pressure switch -F1- .
– Screw a used oil pressure switch into threaded hole on oil
pressure tester -V.A.G 1342- to seal hole.
– Start engine.
• Oil pressure at idling speed: at least 0.8 bar.
• Oil pressure at 2000 rpm: at least 2.0 bar.
– Install oil pressure switch -F1-
2.6
Engine oil
Refer to ⇒ Maintenance tables for engine oil capacity, oil speci‐
fications and viscosity grades.
2.7
Checking oil level
⇒ Maintenance ; Booklet 810
2. Oil filter bracket and engine oil cooler
159
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
19 – Cooling
1
Cooling system
WARNING
Hot steam/hot coolant can escape - risk of scalding.
♦ The cooling system is under pressure when the engine is
hot.
♦ To allow pressure to dissipate, cover filler cap on coolant
expansion tank with cloth and open carefully.
Note
♦
Secure all hose connections with the correct type of hose clips
(same as original equipment) ⇒ Electronic parts catalogue .
♦
The arrow markings on coolant pipes and on ends of hoses
must align.
160
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
1.1
Diagram of coolant hose connections
Connection diagram for coolant hoses without 4/2-way valve:
1 - Radiator
❑ If renewed, refill system
with fresh coolant
2 - Pump for exhaust gas re‐
circulation cooler -V400-
3 - Engine oil cooler
4 - Radiator outlet coolant tem‐
perature sender -G83-
❑ Removing and installing
5 - Thermostat
6 - Coolant pump
7 - Cylinder head and cylinder
block
❑ If renewed, refill system
with fresh coolant
8 - Coolant expansion tank
❑ With filler cap
❑ Checking pressure re‐
lief valve in filler cap
9 - Exhaust gas recirculation
cooler
❑ If renewed, refill system
with fresh coolant
10 - Coolant temperature
sender -G62-
❑ Removing and installing
11 - Heat exchanger for heater
❑ If renewed, refill system
with fresh coolant
12 - Gear oil cooler
❑ For dual-clutch gearbox
❑ If renewed, refill system with fresh coolant
Connection diagram for coolant hoses with 4/2-way valve:
1. Cooling system
161
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
1 - Radiator
❑ If renewed, refill system
with fresh coolant
2 - Pump for exhaust gas re‐
circulation cooler -V400-
3 - Engine oil cooler
4 - Radiator outlet coolant tem‐
perature sender -G83-
❑ Removing and installing
5 - 4/2-way valve with thermo‐
stat
❑ Removing and installing
6 - Coolant pump
7 - Cylinder head and cylinder
block
❑ If renewed, refill system
with fresh coolant
8 - Coolant expansion tank
❑ With filler cap
❑ Checking pressure re‐
lief valve in filler cap
9 - Exhaust gas recirculation
cooler
❑ If renewed, refill system
with fresh coolant
10 - Coolant temperature
sender -G62-
❑ Removing and installing
11 - Heat exchanger for heater
❑ If renewed, refill system with fresh coolant
12 - Gear oil cooler
❑ For dual-clutch gearbox
❑ If renewed, refill system with fresh coolant
162
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