968 Cabriolet L4-2990cc 3.0L DOHC (1993)
Cam Gear
3. Remove distributor rotor and fit camshaft gear with 3 auxiliary bolts (M 5 x 15) to prevent the camshaft gear and the camshaft, respectively, from
turning when the central camshaft bolt is undone.
Cam Gear Bolt
4. Undo central camshaft bolt using a suitable retainer to keep the camshaft from turning. Rotate engine against the sense of rotation until the
camshaft gear is against the stop within the woodruff key groove.
5. Tighten auxiliary bolts to 6 Nm (4 ft lb) and central bolt to approx. 40 Nm (29 ft lb).
Oil Line
6. Remove oil line from camshaft adjuster. Connect flange (Special Tool 9529) to camshaft adjuster and pressurize (pressure flow approx. 3.0 bar
(43.5 psi). A consistent supply of compressed air is required since air can escape across a vent hole.
7. Turn engine in sense of rotation until maximum piston stroke is reached.
8. Set dial gauge of hydraulic tappet of cyl. 1 inlet valve to zero.
9. The crankshaft is now rotated from the firing TDC (cyl 1). Observe dial gauge of cyl. 1 inlet valve at the same time. Rotate until a stroke of 0.39 ±
0.03 mm (0.0154 ± 0.001 in) is reached
CAUTION: Do not rotate crankshaft against the sense of rotation
10. Undo central bolt and auxiliary bolts, making sure the setting of 0.39 ± 0.03 mm (0.0154 ± 0.001 in) on the dial gauge does not change.
