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Top Products
Tractors,
Lawn
and
Garden
-
110
and
112
Electrical
System
40
SM-2059-(Apr
-67)
Charging
System
15-11
Correction
in
tension
can
be
made
by
bending
the
brush
spring
as
required.
If
the
brush
spring
shows
evidence
of
overheating
by
appearing
blued
or
burned,
a
new
spring
should
be
installed
.
Ove
rheating
will
cause
a
spring
to
l
ose
its
tem-
per.
Ii
the
brushes
are
worn
down
to
one-half
their
original
length,
when
compared
with
new
brushes,
they
should
be
replaced,
13rllsh
Hold
ers
Fi'1. 16 - /n s
tol/i"9
Brush
Ho/d",s
The
brush
holder
assemblies
are
mounted
on
the
inside
of
the
generator
frame,
Figure
16.
Replace
damaged
brush
holders.
To
remove
brush
hold
r(s),
drill
out
rivets
holding
them
to
frame.
Secure
new
holders
to
frame
with
scr
ew
s,
nuts
an
d
washers
provid
ed in
the
replac(
-
~
l11ent
pack
age
.
Armatu
r e
When
inspecting
the
motor-generator,
also
note
the
condition
of
the
cOl1ll1)uta
tor.
If
.
the
com-
mutator
is
p;lazed
or
dirty.
it
can
be
cleaned
by
placing
the
armature
in
a
lathe.
While
the
arrl1a-
ture
is
rotating.
hold
a
strip
of
number
00
s:lnd-
pap
e r
lightly
against
the
commutator,
moving
the
sandpaper
hlCk
and
forth.
Figure
17.
Blowout
all
dust
aft
er
sanding
the
commuta-
tor.
If
the
commutator
is
rough,
out
of
round,
has
high
mica,
or
is
extrell1f'ly
dirt
y . it
will
rC'C[uire
"turning
down
"
in
a l
at
he
and
the
mic.a
unctercllt
bet
w en
the
b:lrs.
/
\
M
>7
1 1
F
ig.
17-Cleoni"g
Commutator
1 -
Operating
Handle
2 - R
<,m
ovol
Sc
,ew
3 -
Clump
Wing
Nut
~
-
To
ol·Adjusting
Nut
5 -
F,
ame
6 -
Mond,el
7 -
Lock
Wing
Nut
8 -
Commutator
Fig.
18-
Tu
rn I
ng
Down
GenC'
ru
f
or
ComnlUta,o(
Li
tho
in
.S.
A.