3
72
M
O
TO
R C
H
EC
k
S AN
d
ASS
EM
B
LY
ExplODED vIEW OF cENTRIFUGAl UNIT AND WATER pUMp UNIT
1) Rocker arm;
2) 5x15x2;
3) Screw M5x12;
4) complete valve control rod;
5) Spring guide;
6) Auxiliary spring;
7) Adjusting spring;
8) Washer 10x16x1;
9) Roller bush;
10) centrifugal control lever;
11) Water pump impeller;
12) Water pump washer;
15) complete centrifugal unit;
16) Roller axle cage;
17) centre bearing;
18) Spacer;
19) circlip;
20) complete centrifugal shaft;
32) Ball joint retainer ring;
33) Bearing 6x19x6;
34) Bearing 15x32x9;
35) Oil seal
3.9 COOLANT LIQUId PUMP
ANd CENTRIFUGAL UNIT
The water pump must guarantee, depending on
the set rotation speed, the correct flow rate of the
coolant in order to extract the needed amount of
heat from the thermal unit. The centrifugal unit
activates the whole exhaust valve control lever-
age based on the engine rotation speed, while
springs
6
and
7
give the correct contrast to the
centrifugal action caused by
20
in order to guar-
antee excellent supply of torque and power.
The impeller
11
is fastened to the shaft
20
and
the coupling is ensured by clamping the screw
3
onto the shaft
20
.
The centrifugal unit
20
shaft is supported by
bearing
34
present on the internal clutch cov-
er and by bearing
33
on the external side right
crankcase half. Seal is guaranteed by oil seal
35
.
Summary of Contents for X Trainer 300 2T 2015
Page 1: ...CODE 036440030 000...
Page 19: ...2 17 Engine disassembly Remove the four collar nuts 9 9 Extract the cylinder and base gaskets...
Page 116: ...114 NOTES...
Page 117: ......