Kubota D662-E - Camshaft; Rocker Arm; Valve Timing

M.l ENGINE BODY
68 mm STROKE SERIES
WSM, 01 160
Inlet valve open
@
inlet valve close 6
[6] CAMSHAFT
0.35 rad. (20') before T.D.C.
0.79 rad.
(45') after B.D.C.
[7] FLYWHEEL
Exhaust valve open
Exhaust valve close
@
The camshaft (3) is made of special cast iron and
the journal and cam sections are chilled to resist
wear. The journal sections are force-lubricated. The
fuel camshaft
(5) controls the reciprocating
movement of the injection pump.
The fuel camshaft
is made of carbon steel and the cam sections are
quenched and tempered to provide greater wear
resistance.
(1) CamGear
(2) Camshaft Stopper (5) Fuel Camshaft
(3) Camshaft
(4) Injection Pump Gear
0.87 rad. (50') before B.D.C.
0.26 rad. (1 5") after T.D.C.
The flywheel stores the rotating force in the
combustion stroke
as inertial energy, reduces
crankshaft rotating speed fluctuation and maintains
the smooth rotating conditions.
The flywheel periphery
is inscribed with the marks
showing top dead center mark
TC.
The flywheel has gear teeth around its outer rim,
which mesh with the drive pinion of
the starter.
(1) Crankshaft (3) Flywheel Screw
(2) Flywheel
01 09F023
81 ROCKER ARM
The rocker arm assembly includes the rocker arms
(l), rocker arm brackets (4) and rocker arm shaft (5)
and converts the reciprocating movement of the
push rods to an openklose movement
of the inlet
and exhaust valves.
Lubricating oil
is pressurized through the bracket
to the rocker arm shaft, which serves as a fulcrum
so
that the rocker arm and the entire system are
lubricated sufficiently.
(1) Rocker Arm (4) Rocker Arm Bracket
(2) LockNut (5) Rocker Arm Shaft
(3) Adjusting Screw
0109F021
[9] VALVE TIMING
I I
0107F021
M-7