~2~·
~~---------------------------------------------
8. While continuing to hold the brushes
away
from slip rings, insert
the
brush retainer wire
from outside stator housing hole, through
brush block assembly. Release both brush
lead wires.
See
Figure 8-10.
BRUSH
..----BLOCK
RETAINER
...--------
WIRE
G-11Ns
FIGURE
8s10.
BRUSH REPLACEMENT
9. Install brush biock mounting
screws
and
tighten only enough to hold brush
block
as-
sembly
in position.
1
0.
Lift both brush
!ead
wires
and
remove brush re-
taining wire compiete!y from
stator
housing.
11
.
Adjust
brush block
assembly
so
that
brushes
are
aligned on slip rings, and tighten brush
block
mounting screws. Do not overtighten,
or
the
plastic will crack.
12.
Connect
the
voltage regulator
and
brush lead
wires
to
brush block terminals;
Fi
with (+) out-
board
brush lead, and F2
with(-)
inboard brush
lead.
13. Instal! brush block
cover
onto
stator
housing.
14. !nstal!
air
filter element
and
air
cleaner
cover.
15.
Connect
terminaL
{-) battery
cable
to
battery
Slip
Ring
Inspection
and
Maintenance
Remove the brush block
cover
and inspect
the
slip
rings for grooves, pits,
or
other
damage. If the slip
rings are
not
in
good
condition, they
may
be
refin-
ished using a
commutator
stone. A shiny
brown/
black surface
is
normal, with
one
or
two
areas
with
exposed brass.
Slip
Ring
Service
Procedure
1. Remove
the
air
cleaner
cover
and
air
cleaner
filter.
2. Disconnect
the
lead
wires
from the brush
block
terminals
and
then insulate the lead wire ends.
Tie
the
lead wires
to
one
side
to
allow
clear
ac-
cess
to
the
slip rings.
3. Remove
the
brush block mounting screws and
lift
out
the brush
block
assembly.
4. Insert a 3/8 inch allen wrench into
the
rotor
through-bolt
and
rotate
the
engine
and
genera-
tor
one
full turn. While rotating, inspect
condi-
tion
of
slip rings. If
the
slip rings need refinish-
ing, continue
to
next step. If slip rings
do
not
need refinishing, follow steps 9 through
14
in
the Brush Replacement section.
5. Move
the
Start-Stop switch
to
START
position
to
crank
the engine. During this step,
crank
the
engine for 3
to
6 second cranking periods with
a rest period between,
so
the starter will
not
overheat.
During
engine
cranking, hold a
commutator
stone (Onan tooi 420-0259) against rotating
slip rings. Remove
the
commutator
stone
after
each cranking period and
check
that carbon
is
being removed
and
all roughness
and
grooves
are smoothed out.
IAWARNINGI Contact with rotating machin-
ery can cause severe persona/Injury" Keep
hands, fingers,
clothing and jewelry clear
while servicing slip rings.
6. Remove insulating material from
ends
of
volt-
age
regulator lead
wires
F1
and
F2, and then
install brush
block
assembly. Follow steps 6
through
14
in the Brush Replacement section.
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