Audi Q7: Intake and Exhaust Valves
Valve Guides, Checking
Special tools and workshop equipment
required
- Dial Gauge Holder -VW387-
- Dial Gauge - 0-10mm -VAS6079-
Procedure
Note
- If the valve is replaced during repair, use the new valve
for measurement.
- Due to different stem diameters, only use an intake valve in
the intake valve guide and an exhaust valve in the exhaust valve
guide.
- Secure the Dial Gauge - 0-10mm -VAS6079- on the cylinder
head with the Dial Gauge Holder -VW387- as shown in the
illustration.
- Place the valve in the valve guide.
- Valve stem tip must seal with the valve guide.
- Determine the tilting clearance.
- If the wear limit is exceeded, measure using new valves.
- Replace the cylinder head if the wear limit is still
exceeded.
Note
The valve guides cannot be replaced.

Valves, Checking
- Check the valves at stem and seat surface for wear grooves.
- If there are clear wear grooves, replace the valve.
Valve Dimensions
Note
Intake and exhaust valves must not be reworked. Only lapping
is permitted.


Special Tools
Special tools and workshop equipment
required
- Elbow Assembly Tool -T10118-

- Injector/Combustion Chamber Seal Tool Set - Impact Puller
-T10133/3- from Injector/Combustion Chamber Seal Tool Set
-T10133C-

- Valve Cotter Tool Kit - Adapter -T40012-

- Crankshaft Socket -T40058-

- Crankshaft Locking Pin -T40069-

- Locking Pin -T40071- (quantity: 2)


- Camshaft Clamp -T40133- (quantity: 2)

- Compression Tester Kit -VAG1763-

- Valve Keeper Tool Kit -VAS5161A- with the Valve Cotter Tool
Kit - Guide Plate 19C -VAS5161/19C-

- Dial Gauge - 0-10mm -VAS6079-

- Dial Gauge - 0-3mm -VAS6080-

- Engine and Gearbox Bracket -VAS 6095A-

- Engine Bung Set -VAS6122-

- Cylinder Head Tensioning Device -VAS6419-

- Dial Gauge Holder -VW387-

- Spark Plug Removal Tool -3122B-

- Puller - Valve Seal -3364-

- Seal Installer - Valve Stem -3365-
- Timing Chain Tensioning Key -T40297-

READ NEXT:
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Note
If large quantities of metal shavings or
abraded material are detected during engine repairs, it may mean the
crankshaft or connecting rod bearings are dam
Overview - Engine Oil Cooler
1 - Engine Oil Cooler
With oil cooler bypass valve
See note.
Removing and installing. Refer to
→ Chapter "Engine Oil Cooler, Removing and Installin
SEE MORE:
Preparation
You must complete the preparation before
changing a tire.
Read and follow the important safety precautions.
Set the parking brake.
Select the "P" selector lever position.
When towing a trailer: disconnect the trailer
from your vehicle.
Lay out the vehicle tool kit and the
spare t
Vehicles with a High Voltage System (Hybrid Vehicles)
Read and follow all of the supplemental warnings for all
work performed on vehicles with the high voltage system. Refer
to
→ Chapter "Warnings when Working on Vehicles with High Voltage
System" and
→ Electrical Equipment;