924 S L4-2479cc 2.5L (1986)
Changing Belt Tension
9. Turn tensioning roller clockwise to increase tension. Turn anti-clockwise to slacken. Tighten hex nut to 45 Nm (33 ft lb) while countering.
Setting Pulley Pretension
Balance Shaft Belt
10. After adjusting drive-belt tension, adjust idler pulley. Using Special Tool 9207 or feeler gage 0.5 mm (0.020 in) set pulley so that there is a
clearance of 0.5 mm between belt and pulley at the lower balance shaft when o to 1 mm pretension is applied to upper run of toothed belt. Tighten
pulley in this position. If correct clearance cannot be reached, turn pulley through 180°C and repeat adjustment. Tighten hex nut to 45 Nm (33 ft
lb)while countering.
11. Install Poly-rib belt, servopump belt and adjust.
CAUTION: Slides must make full-surface with contact belt. While measuring, do not allow the Special Tool to turn or move on the belt.
