SECTION 9—WHEELS
Part No 1134343
57
Crossfire
™
T6A Wheelchair
Adjusting Fork Tension
NOTE:
For
this
procedure,
refer
to
FIGURE
9.14.
1. To
properly
tighten
forks
and
guard
against
flutter,
perform
the
following
check
on
both
forks:
A. Tip
back
the
wheelchair
to
floor.
B. Pivot
both
forks
and
casters
to
top
of
their
arc
simultaneously.
C. Let
casters
drop
to
bottom
of
arc
(wheels
should
swing
once
to
one
‐
side,
then
IMMEDIATELY
rest
in
a
straight
downward
position).
2. If
necessary,
perform
one
of
the
following
to
adjust
the
fork
tension:
• Standard
Forks
‐
Adjust
locknut
according
to
freedom
of
caster
swing
(Detail
“A”).
a. Tighten
locknut
to
reduce
caster
swing.
b. Loosen
the
locknut
to
increase
caster
swing.
• Suspension
Fork
(Detail
“B”)
‐
a. Refer
to
Removing
the
Elastomer
on
page 61
to
remove
the
elastomer
and
suspension
fork
bottom
to
access
the
locknut.
b. Adjust
locknut
according
to
freedom
of
caster
swing.
c. Refer
to
Installing
the
Elastomer
on
page 61
to
secure
the
suspension
fork
top
to
the
elastomer
and
suspension
fork
bottom.
3. Test
wheelchair
for
maneuverability.
4. If
necessary,
repeat
STEPS
1
‐
2
to
adjust
locknuts
until
tension
is
correct
for
both
forks.
FIGURE 9.14
Adjusting Fork Tension
Fork
Locknut
Caster
DETAIL “B” SUSPENSION FORK
Suspension Fork Top
Washer
Locknut
Suspension
Fork Bottom
Elastomer
Threaded Bushing
Mounting
Screws
Mounting
Screws
DETAIL “A” STANDARD
FORK
Caster
NOTE:
Washer
and
locknut
shown
exploded
for
clarity
only.
DO
NOT
remove.
