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If
the
step
doesn't
move
then
power
is
applied
to
the
motor terminals,
but
a
dim
spark
is
noticable,
there
may
be
damage
to
the
windings
inside
the
motor, requiring replacement
of the motor.
A dim spark
may
also
indicate
a
poor
ground connection.
A very
bright
spark
usually
indicates
a
shorted
or
burned
out
motor
requiring
replacement.
Further inspection of the motor should be done by removing one of the
i;?hbolSTn the end of the motor near the ping
Rem„«; the bolt
shown in Fig. 8 with the arrow pointing to it.
If the sha
bolt has a burned, tar like substance on it
the
motor
windings have
overheated
The motor should be replaced, even
if it still work .
However, a clean bolt does not necessarily mean internal damage
not present.
if the motor is defective refer to the instructions for removing the
motor
assembly
from
the
step
frame
and
disassembly
of
the
mo or
assembly to remove the motor.
TEST PROCEDURE - CONTROL UNIT TEST:
7.
The
motor
must
be
operational to
test the
control unit using this
procedure.
See MOTOR TEST PROCEDURE.
a.
round
the
negative
(-)
post
of
a
well
charged
12
volt
DC
attery to the ground cable attached to the step frame.
well charged battery will read at least
12.7 volts DC when a
oltmeter is connected between the battery posts.
See GENERAL
.F.RVTCE NOTES.
b.
c.
d.
e.
The 90° molded motor plug must be connected.
The four way plug between the control unit and the
coach shou
be disconnected.
Install pigtail (four way plug - part #9336> -
same plug as supplied with the step for connection to the coach)
into the control unit half of the four way plug.
Touch the RED and WHITE wires to the positive (+) post of the
battery.
At the same time, touching the BROWN wire to the
ground cable will cause the step to extend.
CAUTION:
Keep hands clear of the step mechanism.
When the BROWN wire is removed from the ground cable the step
should retract.
C-49
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