Cub Cadet 8404 - Manual (Page 31)

ENGINE SYSTEM
2-9 D615-W02 May-2003
615W215A
615W214A
615W213A
H. ROCKER ARM ASSEMBLY
The rocker arm assembly includes the rocker arms (1)
and an adjusting screw (3), which is at the end of rocker
arm and rests on the push rod, rocker arm brackets (4)
and rocker arm shaft (5). The rocker arms are activated
by the reciprocating motion of the push rods and open
or close the inlet and exhaust valves. The rocker arm
and other parts are lubricated through the drilled holes
of the brackets and the rocker arm shaft.
(1) Rocker Arm (4) Rocker Arm Bracket
(2) Lock Nut (5) Rocker Arm Shaft
(3) Adjusting Screw
F. CAMSHAFT
The camshaft (3) is made of forged steel and its jour-
n a l a n d c a m s a r e h a r d e n e d t o i n c r e a s e w e a r
resistance. The cams on the camshaft open and close
the inlet and exhaust valves with the push rods and
rocker arms. The journals and their bearings are force-
lubricated.
G. FUEL CAMSHAFT
This fuel camshaft is made of forged steel and its cams
a r e h a r d e n e d a n d t e m p e r e d t o i n c r e a s e w e a r
resistance. The cams on the fuel camshaft (1) drive
the injection pump and the fuel transfer pump. The
governor balls are installed on the fuel camshaft to
control the engine speed.
(1) Cam Gear (3) Camshaft
(2) Camshaft Stopper
(1) Fuel Camshaft (2) Injection Pump Gear