Subaru Robin Power Products HD7830 Automobile Parts User Manual


 
4-
6
CAMSHAFT
The camshaft
for
the
D-
type engine is made
of special cast iron and camshaft gears are
casted together in one piece.
Both sides of the shaft fit into the plane
bearings
on
the crankcase and main bearing
cover.
The camshaft for
B-
type engine is made
of
forged
carbon
steel
and
also functions as
PTO
shaft.
Cam gear
is
press fitted on the shaft and ball
bearings are employed on the both sides for
supporting the shaft. (See Fig.
6.1
4-
7
VALVE ARRANGEMENT
The intake valve is located
on
flywheel side of
the cylinder head.
Hard alloy valve seats are moIded in the
cylinder head
and
stellite
is
fused to the exhaust
valve face.
The cylinder baffle leads cooling air
to
the
exhaust valve area for the optimum cooling.
(See Fig.
7.)
I
B
TYPE
Fig.
6
VALVE
I
Fig.
7
4-8
CYLINDER
HEAD
The cylinder head
is
an
aluminum
die
casting
which utilizes wedge type combustion chamber
for the highest combustion efficiency.
(See
-Fig.
8.)
Fig.
8
-8-