67
Polygon hub, installation
Special tool: 884949
1
Lubricate the crankshaft nose with molybdenum disul-
phide compound. Install the centring section of man-
drel no. 884949 (A) on the crankshaft nose.
Heat up the polygon hub to about 100°C. Drive the
hub quickly onto the crankshaft nose (B) until it is
about 5 mm from the plane of the gear wheel.
Remove the tool. Install the washer and centre screw.
Torque the screw to 200 Nm (20 kpm).
Leave the hub to cool and torque the screw to
260 Nm (26 kpm).
2
Install the torsional damper and crankshaft pulley.
Torque the screws to 90 Nm (9 kpm).
Camshaft, wear check
Special tools: 998976, 9996772
Preparatory work
l
Remove the valve covers. Remove the screws
holding the rocker shaft bearing caps and remove
the rocker mechanism. Lift the push rods out.
Mark the push rods so that they end up in the
same place during re-assembly.
Valve location and cylinder numbering
1
Install tool no. 9996772 with two M10x20 screws be-
side the front valve lifter (cylinder 1 exhaust valve).
Install the dial gauge on the tool.
Repair instructions
Inlet valve
m
Exhaust valve
l
Front of engine
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