Adequate
ground
clearance:
Please
notice
that
the
min.
distance
between
the
lowest
line
of
motors
and
ground
is
110mm,
no
matter
what
kinds
chassis
or
install
situation.
Make
sure
that
the
main
cross
bar
(3)
is
positioned
in
the
middle
of
the
caravan
(the
centre
of
the
bar
is
marked).
With
the
main
assembly
is
loosely
fitted
onto
the
chassis,
slide
the
whole
assembly
along
the
chassis
until
the
rollers
are
20mm
away
from
the
surface
of
the
centre
each
tyre
(Fig.
10).
Two
20mm
spacers
(30)
are
provided.
It
is
vitally
important
that
each
roller
is
at
exactly
the
same
distance
away
from
the
tyre.
The
whole
assembly
must
be
parallel
to
the
caravan/trailer
axle.
Slide
the
motor
units
in
or
out
of
the
cross
bar
(3)
accordingly
to
ensure
the
roller
will
have
the
maximum
possible
contact
with
the
tread
of
the
tyre.
Ensure
that
the
position
of
each
motor
unit
does
not
obstruct
shock
absorbers
(if
fitted)
and
that
the
gear
cover
(Fig.
8)
is
not
too
close
to
the
surface
of
the
tyre/shock
absorber.
The
minimum
clearance
when
the
drive
units
swivelled
in
is
10mm.
Re-check
that
there
is
sufficient
space
available
(minimal
20mm)
between
the
top
of
the
motor
housing
and
the
floor
of
the
caravan
so
the
motors
can
move
freely
(Fig.
15).
Fully
tighten
the
four
bolts
(Fig.
1A)
on
the
main
cross
bar
(3)
and
lock
them
by
the
additional
nuts.
Fully
tighten
all
the
nylon
nuts
on
both
clamping
assemblies
(Fig.
2).
First
tighten
the
diagonal
placed
M10x60
bolts
with
a
20Nm
torque,
and
then
M10x50
bolts
to
a
40Nm
torque.
Re-check
the
distance
of
20mm
from
the
rollers
to
the
tires,
the
position
of
the
aluminium
rollers
in
addition
to
the
surface
of
the
tire
and
finally
the
distance
between
the
gear
cover
(Fig.
8)
and
the
tires
&
shock
absorbers
(>10mm).
The
weight
of
the
caravan
must
be
on
the
wheels
when
doing
this.
If
necessary,
loosen
the
bolts
and
re-adjust
the
position
of
the
assembly.
Re-check
that
all
bolts/nuts
have
been
tightened
to
the
correct
torque!
The
main
mechanical
components
have
now
been
installed.
INSTALLATION
-
ELECTRICAL/ELECTRONIC
COMPONENTS
Make
sure
the
12V
supply
from
the
battery
and
any
230V
electricity
supply
are
disconnected.
Remove
battery
cable
terminals
and
disconnect
any
external
electrical
power
before
starting
work.
Find
a
suitable
place
for
the
electronic
control
unit
(4),
such
as
a
storage
area,
under
a
seat
or
a
bed.
Make
sure
this
place
is
dry
and
close
to
the
battery
(40cm
to
60cm).
The
electronic
control
unit
can
be
mounted
vertically
on
a
side
wall
or
be
mounted
flat.
When
mounted
vertically,
the
connections
must
point
downwards
to
avoid
any
short-circuits
by
objects
falling
into.
Fix
the
electronic
control
unit
securely
into
position
with
two
screws
M5x40
(33).
Note:
if
the
provided
screws
are
not
of
suitable
length
or
type
for
the
desired
location/material
please
substitute
these
as
appropriate.
Drill
a
25mm
hole
through
the
floor
of
the
caravan
approximately
150mm
centrally
in
front
of
the
control
unit
(4)
terminals.
Caution!
Take
extra
care
to
avoid
any
chassis
members,
gas
pipes
and
electrical
wires!
Route
and
connect
the
motor-cables
in
accordance
with
wiring
diagram
(Fig.
12)
(red
=
positive,
black
=
negative).
The
wiring
diagram
(Fig.
12
+
Table.
A
(see
below))
depicts
the
wiring
route
when
installing
the
motor
units
in
front
of
the
wheels/axle
towards
the
frame.
Please
refer
to
table
B
(below)
for
fitment
of
the
motor
units
to
the
rear
of
the
axle.
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