Cub Cadet 8454 Service Manual download pdf (Page 31)

ENGINE

2-9

D569-W02 May-2003

569W214A

569W213A

569W212A

(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 it’s jour-

nals and cams are hardened to increase wear

resistance. The cams on the camshaft open and close

the intake and exhaust valves with the push rods and

rocker arms. The journals and their bearings are force-

lubricated.

(1) Cam Gear (3) Camshaft

(2) Camshaft Stopper

(1) Fuel Camshaft (2) Injection Pump Gear

G. FUEL CAMSHAFT

This fuel camshaft is made of forged steel and its cams

are hardened and tempered to increase wear

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.

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 intake and exhaust valves. The rocker arm

and other parts are lubricated through the drilled holes

of the brackets and the rocker arm shaft.

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Cub Cadet 8454 Service Manual Page 31