Chapter 9 Electrical
System
_3._S_t_a_rt_e_r_M_ot_o_r
__________________________
3,4JH3(B)(C)E
3.
Starter Motor
3-1
Specifications
YANMAR Part No.
HITACHI Model
No.
Yoke diameter
(mm)
Nominal power
(kW)
Nominal voltage
(V)
Rating
(sec)
Direction of Rotation
(Looking from the Pinion side)
Number of Pinion teeth
Weight
(kg)
Terminal voltage
(V)
No load
Electric current
(A)
Revolutions
(r/min)
Terminal voltage
(V)
Load
Electric current
(A)
Torque
(N ·
m)
Revolutions (r/min)
1.
2.
3.
4.
5.
6.
7.
129698-77010
S114-815
68
1.2
12
30
Clockwise
11
3.0
11
90
(MAX)
2.750
(MIN)
8.4
250
7.2
(MIN)
1.200
(MIN)
14
6
Armature
Yoko
Brush
Rear Cover
Pinion Shaft
Center Bracket
(A)
Center Bracket (P)
3-2. The planetary gear starter system
3-2.1 The planetary gear starter
While these only had specialized applications
in
the past.
they currently are being widely adopted because of their
compact, lightweight design.
Although smaller than the direct-drive type starter with its
armatuer and pinion driven at the same speed, the plane-
tary gear starter actually reduces the motor speed to
approximately 17% prior to driving the pinion.
It
does this without reducing output, hence the derivation
of its name.
Furthermore, use of heat-resistant insulating materials
and advanced production technology makes the compact,
light weight design possible and improves its starting
capabilities
in
cold regions.
13
8.
Internal Gear
9.
Planet Gear
10.
Pinion
11.
EearCase
12.
Shift Lever
13.
Torsion Spring
14.
Hagnetic Switch
Fig
.1
Planetary Gear Starter Construction
9-8
Printed
in Japan
HINSHl-H8009
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