Section 01 V-810
ENGINE
Subsection
02
(COOLING SYSTEM)
WATER PUMP IMPELLER
Removal
Remove:
- water pump housing
- impeller.
1
1.
Impeller
CAUTION: Water pump shaft no.
3
and im
peller no.
2
have right-hand threads. Remove
by turning counterclockwise and install by
turning clockwise.
Inspection
Check impeller for cracks or other damage.
Re
place impeller if damaged.
Installation
The installation is the opposite of the removal pro
cedure. Pay attention to the following detail.
CAUTION: Be careful not to damage impeller
wings during installation.
WATER PUMP SHAFT
Removal
Remove:
- CVT. refer to appropriate
VEHICLE SHOP MAN
UAL
- both cylinders and heads, refer to
CYLINDER
AND HEAD
- separate crankcase, refer to
BOTTOM END
- water pump housing
no.
1
- impeller
no.
2
- retaining ring
no.
5
with appropriate pliers
8
CAUTION: Never us
e the
retaining ring a sec
ond time. Always install a new one.
- water pump gear
2
1.
Retaining ring
2.
Water pump gear
NOTE: The water pump gear is held by a needle
pin on the water pump shaft.
- needle pin and thrust washer.
1.
Water pump gear
2.
Needle pin
3.
Thrust washer
Using a soft hammer to push out water pump
shaft with rotary seal
no.
3
from
inside of
crankcase
MAG
side.
CAUTION: When removing water pump shaft,
always replace rotary seal with water pump
shaft no.
3
and oil seal no.
4
(behind rotary
seal).
vmr2006-040
R400motr144A
1
1.
Water pump shaft with rotary seal
1. Oil
seal behind the rotary seal
2.
Rotary seal bore
Extract oil seal
no.
4
from inside of crankcase
MAG
side
with a pusher.
CAUTION: Be careful
not
to damage the sur
face of the rotary seal bore in crankcase MAG
side.
vmr2006-040
Section 01 V-810
ENGINE
Subsection
02
(COOLING
SYSTEM)
TYPICAL
1.
Bores for oil seal removal
Inspection
Inspect water pump gear for wear and damage on
the snap mechanism to the needle pin. Replace
if damaged.
NOTE: When removing water pump shaft, al
ways replace together retaining ring, oil seal,
water pump shaft with rotary seal with new parts.
Installation
For installation, reverse the removal procedure.
However, pay attention to the following.
NOTE: Never use oil in the press fit area of the
oil
seal and rotary seal.
Push water pump shaft oil seal in place by u
s
in
g
the
oil
seal pusher (P/N
529 035 757)
and the in
staller handle (P/N
420 877 650).
1
2
1.
Handle
2.
Pusher
9
Содержание RORAX V-810
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