black (power) lead
at
the
motor and yellow and
gray
motor
leads
at
speed change motor
capacitor
2A2Cl.
4. Remove
the
two
bolts and washers
that
hold
the
speed change motor
to
the
bracket.
5.
Remove the speed change motor.
6.
Replace
the
speed change motor
in
reverse
order
of
disassembly.
Refer
to
drawing number 0208-201 (Q55) or 0221-201
(Q65) for wire
arrangement.
7.
Restore
power
to
the
treadmill
and
calibrate
speed (Section 5.4.
I).
5.2.1.3 Speed Change
Motor
CapaCitor
2A2C1
Replacement
Failure
of
the
speed change motor
capacitor
2A2Cl
can
cause
the
speed change motor
to
run sluggishly, blow a fuse (2AIF5
or
2AIF6)
or
prevent
the
motor from
starting.
A 4
microfarad
capacitor
is
used on
all
60
Hz
models
of
the
Q55/Q65
treadmill,
and a 6
microfarad
capacitor
is used on all
50
Hz
models of
the
Q55
treadmill.
1.
Perform
the
procedure in Section 5.2.1.
2.
Note
the
color
and
arrangement
of
the
four wires
to
the
capacitor.
3. Loosen
the
bolts holding
the
capacitor
bracket
in place.
4. Pull
the
capacitor
straight
up
out
of
the
bracket.
5.
Replace
with a new
capacitor,
reassembling in
reverse
order
of
disassembly.
Refer
to
drawing number 0208-201 (Q5S) or
0221-201 (Q6S) for wire
arrangement.
6.
Tighten
the
capacitor
in
the
bracket.
7.
With
the
treadmill
unplugged,
replace
the
hood and handrail.
5.2.1.4 Tachometer 2A3 Optical Sensor
Replacement
1.
Perform
the
procedure in Section 5.2.1.
2.
Remove
the
cable
ties
to
connector
2AIP7 and unplug
connector
2AIP7.
5-2
To
prevent damage
to
the
beam chopper,
lift
the
tachometer
bracket
straight
up
to
remove. Ensure
that
the
tachometer
optical
sensor is
securely
mounted before
the
treadmill
is operated.
3.
Remove
the
two
screws
on
top
of
the
tachometer
optical
sensor and
lift
the
tachometer
bracket
straight
up.
4.
Remove
the
two screws and
spacers
that
hold
the
small
circuit
board in place.
5.
Replace
the
two screws and
spacers
on
the
new
small
circuit
board and
the
two
screws on
the
new
tachometer
optical
sensor.
6. Replace
the
wires
to
the
tachometer
assembly.
Refer
to
drawing number 0208-201
(Q55)
or
0221-201 (Q65) for wire
arrangement.
7.
Align
the
tachometer
beam
chopper
(Section 5.3.5) and
reconnect
2AIP7.
5.2.1.5 Tachometer Beam Chopper
Replacement
1.
Perform
the
procedure in
Section
5.2.1.
2.
Remove
the
two bolts
that
hold
the
tachometer
optical
sensor in place. Move
the
tachometer
optical
sensor
out
of
the
way.
3.
Remove
the
beam chopper by removing
the
bolt and chopper wheel from
the
end
of
the
output
shaft.
4.
Replace
with a new
beam
chopper.
S.
Replace
the
tachometer
optical
sensor on
the
bearing
cap.
6.
Align
the
tachometer
beam chopper
(Section 5.3.5).
5.2.1.6 Grade
Motor
2M1
and/or
Grade
Motor
Gearbox Replacement
1.
Block
the
treadmill
headframe
securely
to
ensure
that
the
treadmill
will not drop when
the
grade
motor
or
grade
chain
is removed.
2.
Perform
the
procedure in Section S.2!1.
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