Flange mounting a gearbox
28
Flange mounting the gearbox to the
flywheel housing
The dimensions of the flywheel housing À and
type of bolted connections for installing the
gearbox can be found in the installation drawing.
Note:
Tightening torques for screws,
see page 79
Crankshaft axial play
Caution:
The designed crankshaft axial play of the
engines must not in any event be reduced
by the flange−mounting of couplings or
other components.
Therefore it is absolutely necessary to measure
the crankshaft axial play before and after the
installation of components Á using a magnetic
mounting fixture with dial indicator Â. If both
measurements do not match, or if the crankshaft
bounces back after being pressed, check the
installation.
Carry out the measurement as follows:
D Remove the V−belt guard
D Secure the magnetic base of the dial gauge on
the engine base
D Attach dial gauge with pre−tension on the
crankshaft
D Push the crankshaft to the end position in the
direction of the flywheel housing.
D Set the dial gauge to zero
D Pull the crankshaft to the end position in the
direction of the dial gauge and read off the
difference.
Engines Crankshaft axial play
V8−1200 0.20−0.40 mm
V12−1800 0.20−0.40 mm
1
2
3
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