[~
.
~'·i
~
GLOW
PILOT
LAMP
BATTERY
t2V-jOOAH
2Eo
Fig.3-39
Diagram
of
electric wiring (24 system)
I
H-OFF.
ON-S
I
~,18
G,
/G,/
s
1M!
I
H
00'
OFF
0
ON
0
S 0
_
40mrn
z
_Srr:nz
--065"",,'
t
.
I
:
,0
00
The wiring diagrams given herein cover
only
the engine. System
is
of
the
so-called
negativeearth type and standard specification
is
12 volts and wiring diagram
shows
Fig. 3·37
(in
case
of
A.C. Dynamo) and Fig. 3-38 (in
case
of
D.C. Dynamo). 24 volts
(Fig.3-39)
is
special
specification.
In
this
case,
4DQ50 Engine
is
equipped with tension pulley in
stead
of
Dynamo.
To
follow
the
service hints given herein in addition
to
those in
"lubrication
Table"
will maintain the electric system trouble-free.
Prior
to
making any service, be sure
to
turn
off
battery switch.
6-1 D.C. Generator
This generator
is
a D.C shung-wound type,
whose
main components
are
field coil,
armature
and
brushes.
1)
Check
for
wrong wiring
and
loose
terminals.
Brush
Ball
bearing
2)
Inspect brushes at times:
re-
t.Ii:
....
...:..::...:...:.::,."",,-IUL...;..;,,,;..:,,;,.;;,...:..;,,;,,~:.:...:J~i'-!ItlZ~-7I
move carbon particles from
1e:illr:7::":'7l~'r-7""':":-:-:~:""':-'7'""1n'-~~llt7:::it~
around them and make
sure
that they move smoothly in
their holders.
If
badly affected
in contact surface
or
worn
more than
11
mm in height,
replace
with
new
brushes.
setting new
brushes~
polish
them
with
#250
sand
paper
so
-
51-
Fig. 3-41
Wear
of
commutator
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