-
5
-
4. GENERAL DESCRIPTION OF ENGINE COMPONENTS
4-1 CYLINDER AND CRANKCASE
The cylinder and crankcase are aluminum die-casting
as a single piece A special cast iron cylinder liner is
molded into the aluminum die-casting
The crankcase has a mounting surface on the output
shaft side to which the main bearing cover is attached
And the lib is made for the crankcase room center
cum oil shelter plate, that improvement breather
function and strength up
And inside of the crankcase has large rib for oil shelter
which to inprove the breather function and stiffness
4-2 MAIN BEARING COVER
The main bearing cover is an aluminum die-casting
with heavy-duty structure to endure to install on
rammers, which is mounted on the output shaft side of
the crankcase By removing the main bearing cover,
the inside of the engine can be inspected with ease
Pilots and bosses are machined into the cover for
direct mounting of the engine onto rammers
And it have suction pipe, oil pump, oil filter and oil
pressure switch
4-3 CRANKSHAFT
The crankshaft is forged carbon steel, and the crank
pin is high-frequency inductionhardened
The crank pulley used to drive the timing belt and the
gear used to drive the governor gear are pressed into
the output end of the shaft
4-4 CONNECTING ROD AND PISTON
The connecting rod is a specially heat-treated
aluminum alloy die-casting Its large and small ends
function as bearings The piston is an aluminum alloy
casting with grooves for mounting one compression
ring and one oil ring
JCC
To Next Page
Need help?
General
