Porsche 996 TT, Repair Manual

Page: 525 / 2099

5. Remove oil extraction pump and closure cap. The oil extraction pump flange must be held with a
wrench when the oil line on the pump is loosened. Subsequently unscrew the three fastening
screws of the oil extraction pump and the three fastening screws of the closure cap, then lever off
the two components.
6. Remove solenoid hydraulic valve for valve lift adjustment. To do so, remove plug, unscrew both
hexagon−head bolts M6 x 25 and remove with the holder. Subsequently remove the valve.
7. Remove camshaft housing cover. Unscrew the 15 hexagon−head bolts M6 and remove the camshaft
housing cover. If this is stuck, it can be loosened by gently tapping with a plastic hammer.
8. Fit auxiliary chain tensioner for both cylinder banks. Unscrew two hexagon−head bolts M6 on each chain
tensioner cover and remove the covers with the chain tensioner. Subsequently screw on both auxiliary
chain tensioners and then apply pretension using the hexagon−head bolt until the first ring on the piston
just disappears from view.
9. Fit dial gauge. A dial gauge is affixed to the first cylinder on cylinder bank 1 − 3 using the universal dial
gauge holder. Extend the probe of the dial gauge until it is certain that measurement on the piston crown is
possible.
einordnung
Checking camshafts 462