Yanmar 3JH3E - Page 140

Chapter 7 Reduction and Reversing Gear
3.
Inspection and Servicing
------:...-_.;;.;....;.;.~~~~.:.---------------------
3,4JH3(B)(C)E
(1}
Shim thickness (T2,T3} measurement of output shaft
(a) Measure the bearing insertion hole depth
(A)
of the
mounting flange, and the bearing insertion hole
depth
(A)
of the clutch case.
(b}
Measure the length
(B}
between the bearing outer
race.
NOTE : Tighten the mounting flange
nut
of
the output
shaft assembly with the specified torque. Press-
fit the inner race
of
the clutch case roller bearing
to
the
large gear side .
r
-~-,
.-
.
iU3
Clutch
case.
. .
1
..r
7
)n
J
.J
. .
!
O"tp,t shaft
I
i .
~
T2
l
fl
c9··r
v
";_J
L
_J'
·t_
-
'u·
I
·-
~_J~-
Mounting
flange
(c)
Measure lenghts
(D)
and
(C)
from the outer race
end of the clutch case bearing included
in
the out-
put shaft assembly.
NOTE:
Before measuring length
(D)
and
(CJ,
press
the
forward large gear and
the
reverse large gear
to
the drive cone untif there
is
no
clearance.
(d)
Obtain thicknesses
(T2)
and
(T3)
by the following
formulas:
T2
=
A+A'-B-T3
(T2: Clearance
±g.,mm)
T3(KM3A}
=
A'
-50-C/2-D
(Tolerance±0.05mm)
Clutch
case
7-18
Out
put
shalt
assy
C
D
B
.
T1
Mn,ntmgn~~
r----"4i-=
1-1--Fm
.
j~·-·j·-·-L~
Clutch
case
T1
: Clearance±0.05
1.
Assemble
the
outer
bearing race without inserting
shims into the clutch case body and flange, and then
assemble only the input shaft.
(Caution): The outer bearing race should be inserted all
the way to the bottom.
Do
not suspend
it
halfway.
2.
Fasten the case body and the flange by tightening 2
bolts diagonally.
3.
Fasten the dial gauge to the flange and fit the needle
to
the end lace of the input
shaft
4.
Move the input shaft up and down manually and read
the dial gauge figure to decide the shim thickness.
{Note): The bearing installation hole does not make a right
angle to the joint face of the case and flange.
Accordingly, precise measurement at the service
site is not possible.
Printed in Japan
HINSHI-H8009