Yanmar YSE8 - Yanmar YSE Inspection: Piston and Connecting Rod Assembly

Disassembly
1) Detach the
pump
assembly from the engine.
2) Remove the
pump
drive
V
pulley
and key.
3)
Remo\e
lhe bearing snap
ring.
4) Take off the
pump
cover,
5)
Drive
out the
drile
shaft b]' hammering \,ith copper hammer from
the impeller side
to the
pulley
side.
(It
comes off with the bealing.
)
a
U)
Remove
the rubber
impeller.
7)
Draw
out the seal from the
pump
bodl'.
.
8)
Remove two
beadngs,
one nylon
packing
and one
rubber
seal
from
the
dlive shaft.
Checking & Servicing
Check
point
Remedy
Patt
code
Scratches or
impeller.
Renew
if scratched,
Renew
il the
gap
between
impeller and
pump
body
side exceeds 0.5 mm.
\6E8 YSE
12
Impeller
r04211- 4207 0
Scratches or
weai on
plpp
body and cover
surfaces ove!
which impeller
slides.
Renew
if scratched oi
Pump
body
YSEs
I
YSEI2
104211-
42010
Pump
body
104211-42080
Scratches or
weat on
pump
seal.
Wea! or
rust
on bearing.
Renew
if scratched or
YSES YSEl2
Pump
seal 104211-42100
Renew
if worn or rusty.
YSE8 YSE12
Bearing
(6200ZZ)
24t07
-062004
.',#
Reaasembly
1)
lnsert
tl)e
cooling water seal into the
pump
body and apply
grease
to the se,al:
2)
Place
two bearings, distance
peace
nylon
packing,
and rubber seal upon
the drive
shaft,
place
the
assembly into the
pump
body, and
then
place
the snap
ring.