2
86
E
N
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IN
E ASS
E
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B
LY AN
D CO
NTRO
LS
EXPLODED VIEW OF WATER PUMP
1) Drive shaft
2) O-ring 5.5x1;
3) Bearing 10x19x5;
4) Oil seal 12x30x7;
5) Bush 8x12x10;
6) Impeller;
7) Washer;
8) Blind nut M6x1;
9) Gasket;
10) Gasket cover;
11) Washer;
12) Screw M6x40.
COOLANT PUMP
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 shaft
1
is supported by two bearings
3
and
sealing of coolant and gear oil is ensured by the
O-ring
2
and oil seal
4
.
The impeller 6 is fastened to the shaft
1
and the
coupling is ensured by tightening the nut
8
onto
the shaft
1
.
CHECKING PUMP UNIT AND
DISASSEMBLY
Disassembly of the entire pump unit can be
done only with the entire clutch cover removed.
Disassembly of the pump unit is performed by
removing the nut
8
which allows you to extract
the impeller
6
, the washer
7
, and the shaft
1
.
This can be removed by pressing the threaded
part of shaft
1
towards the inside of the clutch
cover.
Extract the oil seal
4
and, heating the bearings
3
,
remove them.
Once the shaft is pulled off 1 from the crankcase,
it is recommended to replace the O-ring
2
.
Replace the oil seal
4
every time and if the bush
5
is marked in the area of contact with the oil
seal, replace it as well.
2
.13
2
.13
.1
Complete internal clutch cove of water pump.
Содержание Enduro RR 350 2013
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