APRILIA Atlantic 300 Service Station Manual page 138

Engine
Refitting the intake manifold
- Assemble the inlet manifold and tighten the 3
screws.
Locking torques (N*m)
Inlet manifold screws 11÷13 (8.1÷9.6 ftlb)
Crankcase - crankshaft
Splitting the crankcase halves
- Before opening the crankcase, it is advisable to
check the axial clearance of the crankshaft. To do
this, use a plate and a support with a specific tool
dial gauge.
- Higher clearances are signs of wear on the sup-
porting surfaces of the crankshaft on the crank-
case.
- Remove the ten crankshaft coupling screws.
- Separate the crankcase while keeping the crank-
shaft in one of the two crankcase half.
- Remove the crankshaft.
- Remove the crankshaft halves coupling gasket.
- Remove the two screws and the internal cover
shown in the figure.
- Remove the flywheel side oil seal.
- Remove the oil filter fitting shown in the figure.
- Check the connecting rod axial clearance.
- Check the connecting rod radial clearance.
- Check that the surfaces that limit the axial clear-
ance are not scored and with the aid of a gauge
measure the crankshaft width as shown in the fig-
ure.
ENG - 138
ATLANTIC 300 i.e.