
31
Dis-Assembly Instructions
1. Open terminal box and disconnect drive wires.
EXTREME CAUTION should be exercised with
the small wires going to the tach generator, as
they can be easily broken.
Note:
(Broken wires, or poor connections.)
2. Remove four bolts holding output assembly to
main casing. Remove output assembly while
feeding wires through the hole, once the wires
are free, the output assembly can be completely
removed.
Note:
(Physical damage, remove any buildup of
foreign material on pole wheel which could
cause binding. Binding will cause the drive to run
at full speed when the motor is started even if
the clutch is turned off)
3. Remove the bolt in the center of the pole wheel
that attaches it to the output shaft and insert a
larger 12mm bolt to push it off.
4. The coil is held in place by a retaining ring at the
back and silicone sealant at the front. After
removing the retaining ring, it is necessary to
use a thin blade to break the sealant between
the coil form and the front of the output
assembly. Care must be used the coil is
breakable.
Note:
(Physical damage, signs of
overheating, coil should be 20 to 40 ohms
depending on size. Low resistance will cause the
control fuses to blow, too high will result in poor
performance.)
5. To separate the coil and tach wires cut the
waxed string and carefully slide the rubber tube
off. If the tach is being replaced, a string or small
wire tied to the old tach wires before removing
can be used to assist in pulling in the new wires.
Note:
(Broken wires, tach should be 220 ohms,
a bad tach will cause the drive to run at full speed
when the controller is energized.)
6. Remove the tach cover plate and tach stator.
The tach armature is held in place by a friction fit
star tolerance ring and can be pulled off. Be sure
not to damage the magnetic strip.
Note: (
Broken magnetic strip, this will give the
same symptoms as a bad tach.)
7. Remove the shaft from the assembly on the
output shaft side by pressing on the pole wheel
side of the shaft.
8. The rear bearing (in housing) and the front
bearing (on shaft) can be removed after the
retaining clips have been removed.
9. Remove the motor adapter flange from the main
casing. Remove the 4 cap head screws holding
the torque tube assembly to the hub on the
motor shaft. Two grub screws hold the hub on
the shaft, be sure to remove these grub screws
completely as one is counter sunk into the shaft.
Note:
(Pitting and/or lifting of the copper lining
on the torque tube, this is what transmits the
power; damage here will cause the drive to be
short of power)
CAUTION
- be sure to disconnect power
and follow lock out procedure as specified
by law before opening any terminal boxes
or touching any wiring.