d
e
f
g
h
©
Street
Crane
Co
Ltd
Page
76
of
103
Ref:
D3256
rev.
B
5.13
INSPECTION
AND
MAINTENANCE
–
HOIST
DRIVE
COUPLING
The
coupling
between
the
hoist
motor
and
gearbox
does
not
require
any
maintenance
but
periodically
check
for
damage
to
the
coupling
element
and
that
the
correct
gap
between
the
two
halves
of
the
coupling
as
been
maintained.
Inspection
can
take
place
through
an
aperture
on
the
underside
of
the
gearbox
case.
Motor
Size
Gap
‘X’
H3
to
H5
1.5 –
3.4mm
H6
to
H7
1.8 –
4.0mm
H8
to
H10
2.3 –
4.5mm
If
the
coupling
element
requires
changing
proceed
as
follows:
‐
1
Before
removing
the
motor,
lower
the
bottom
block
to
a
suitable
level
(floor
or
platform)
and
allow
it
to
rest
on
a
solid
support.
Ensure
that
the
mains
power
is
isolated
before
starting
any
work.
Disconnect
the
power
cables
from
the
motor
terminal
box
making
notes
of
each
cable
and
its
relative
terminal
connection.
Support
the
motor
and
remove
the
four
retaining
nuts
and
spring
washers
that
fasten
the
motor
to
the
gearbox.
1
NOTE:
A
hoist
motor
can
weigh
up
to
120kg
(see
HOIST
MOTOR
DATA
7.5).
Carefully
withdraw
the
motor
noting
the
orientation
of
the
motor
terminal
box.
Remove
the
motor
complete
and
replace
the
coupling
element
with
new.
If
the
coupling
body
is
damaged
or
loose
on
the
shaft
and
has
to
be
changed,
consult
the
manufacturer
before
replacing.
Carefully
refit
the
assembly
onto
the
side
of
the
hoist
gearbox
ensuring
that
the
orientation
is
correct
and
that
the
coupling
spider
element
meshes
correctly
in
the
coupling
hub
claws.
Do
not
force
engagement
of
the
coupling
if
any
resistance
is
felt.
Use
the
inspection
hole
on
the
underside
of
the
gearcase
to
ensure
correct
engagement.
Replace
the
motor
retaining
nuts
and
spring
washers
and
tighten
to
40Nm.
Check,
through
the
inspection
hole,
that
the
coupling
halves
have
engaged
correctly
and
that
the
gap
between
the
two
coupling
halves
is
as
shown.
Re
‐
connect
the
cables
to
the
motor
terminals
and,
when
power
is
re
‐
established,
test
for
correct
operation
and
direction
of
rotation.
Summary of Contents for ZX6
Page 2: ......
Page 4: ...defgh Street Crane Co Ltd IV THIS PAGE IS INTENTIONALLY BLANK ...
Page 99: ...defgh Street Crane Co Ltd Ref D3256 rev B Page 99 of 103 NOTES ...
Page 100: ...defgh Street Crane Co Ltd Page 100 of 103 Ref D3256 rev B NOTES ...
Page 101: ......
Page 102: ......