Man V12-1800, Installation Instructions Manual

Page: 30 / 92

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  . 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