Audi Q7 2007 !
6-cylinder TDI engine (3.0 ltr. 4-valve common rail), mechanics 01.2006
2 Servicing valve gear
117
6
Tightening torques
1.5 Checking compression
To check compression, select function “Systems with self-di-
agnosis capability” in “Guided Fault Finding” ⇒ Vehicle diag-
nosis, testing and information system VAS 5051.
Procedure
– Check compression via “Cylinder-selective engine speed”.
2 Servicing valve gear
♦ After installing camshafts, wait for approx. 30 minutes be-
fore starting engine. Hydraulic valve compensation ele-
ments have to settle (otherwise valves will strike pistons).
♦ After working on the valve gear, turn the engine carefully
at least 2 rotations by hand to ensure that none of the
valves make contact when the starter is operated.
♦ The following diagrams show the cylinder head on cylinder
bank 2 (left-side).
Component Nm
Coolant line to cylinder head 15
Coolant pipe (right-side) to cylinder head 9
Toothed belt drive sprocket to camshaft 75
Toothed belt cover (rear) to engine 9
Fuel supply and return lines to high-pressure
pump
25
Note
更多资料请访问深度汽车论坛 http://shenduauto.com/ 客服QQ：1398556747 电话：18218750259
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