Chapter 7 Reduction and Reversing Gear
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______________________
3,4JH3(B)(C)E
(1)
Visually inspect the sliding surface of thrust collar A
or
B to
check
for
signs
of
overheating,
scoring,
or
cracks.
Replace the collar
if
any
abnormal condition is
found.
(2) Measure the thickness
of thrust collar A
or
B,
and
replace it when the dimension exceeds the specified
limit.
t1
t2
1-
Sliding surface Sliding
surface~-r
Thrust collar A
Thrust collar B
Stepped wear Limit for use
Thrust collar
A,
t1
O.C5
Thrust collar
B,
t2
0.20
3-7
Cup spring
(1} Check for cracks and damage to the cup spring.
Replace the part if defective.
{2) Measure the free length
of
the cup spring.
lf
the length
or
the
thickness
deviates
from
the
standard
size,
replace the part.
Cup
spring
Cup spring.T
Printed
in Japan
HINSHl-H8009
r
mm
Standard
2.8~3.1
2.6
7-15
3-8
Oil seal
of
output shaft
Visually inspect the oil seal of the output shaft to check
if
there is any damage or
of!
leakage; replace the seal when
any abnormal condition is found.
3-9 Input shaft
Oil seal
~~
~®../
Rollar bearing
~/
I
tJ
·.
lnput shaft
Roller bearing
(1}
Spline part
Whenever uneven wear and/or scratches are found,
replace with a new part.
(2) Suriace
or
rn!
seaL
1f
the
sealing
surface
of
the
oil
seal
is
worn
or
scratched,
replace.
3-1
o Output shaft
f)_ Straight
pin
Key
slot
y
I
'r o
Hellca!
invofute
sp!lne
Ket slot
(1) Visually inspect
the
spline and
the
helical involute
spline, and repair or replace a part when any abnor-
mal condition is found on its surface.
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