Technical data

6
8
Bedplate screw connection
The bedplate is secured to the upper section
of the crankcase with the main bearing bolts.
The positions are fixed with fitted sleeves
(NG4) or screws with adapter sleeves (S85).
The engine serial number is punched on the
bedplate (see arrow).
To ensure trouble-free operation of the
crankshaft, it is essential that the specified
sequence of the bedplate screw connections
is adhered to. Any deviations from this
sequence can result in engine damage and
leaks in the bedplate/crankcase.
The bedplate facilitates simple and fast
assembly of the crankshaft main bearings.
The bedplate must be sealed from the
crankcase. Since the crankshaft bore is
produced together with the bolted bedplate, a
flat gasket cannot be used otherwise the
crankshaft bore would be enlarged. For this
reason, bedplate-type engines are sealed with
a liquid sealing compound in a groove.
After completely bolting the bedplate to the
crankcase, the liquid sealant is injected via
injection nozzles into the groove.
2 - Bedplate screw connection
3 - Injection opening in crankcase for liquid sealant