How to revive your Arrow
Ball Clock or Arrow Domino Clock
Very important! Do NOT pull
the electric wires off the motor. There is no reason to do so and you will end
up breaking the extremely fine copper windings. I've seen this many times and
people are ruining perfectly good motors by pulling the wires out.
CAUTION!!! These motors were not meant to be
taken apart by Consumers. You risk electric shock by improperly handling the
motor. If you are comfortable taking things apart, then proceed, otherwise I
suggest sending the motor to me for repair.
The below procedures will show you how to replace the gears in your
Ball Clock motor (WG-1420, WG-1420-2, WG-1420-3, WG-5094,
WG-1450). This motor is used in both the original Arrow
Handicraft Ball Clocks as well as the Domino Clocks. In most cases the
reason your motor is no longer working is because the plastic armature
gear and or idler gear have crumbled or decayed from age. Even if the
motors were never used these gears need to be refreshed due to their
age. Keep in mind there are subtle differences in the motor housing
from one clock to another so use this information as a general guide to
perform the repair. The procedure is effectively the same for the
Domino Clocks but the plastic motor casing has to be cut open in order
to get at the Intermatic motor. Additionally my gear kit will repair
the WG-1450 found in the Olympia
Beer Barrel Motion Sign.
Update: If you are repairing the motor from a President's CB
Radio clock with motor
WG6B9A, you will have to widen the hole in the idler gear with a 1/16th
Motor Repair Procedures
(Click thumbnails for enlarged
Determine how the
faceplate of the plastic motor housing is
held in place. Some versions of the motor housing have 2 Phillips head screws
that hold the plate on. Others need to be carefully pried apart. Your motor
may also have a mounting screw with a silver metal locking clip. You
will need to carefully remove the clip so you can get the Phillips head screw out. Don't worry
about breaking the silver clip. It is not needed and was only installed to keep
people from opening the motor. (See figure 1).
Remove the face plate
from the motor housing. Take note of how the motor sits inside the casing and also
note the orientation of the electrical cord. Be careful not to pull on the wire leads
that go into the motor. There is no need to remove the wires (See figure 2).
lift the motor out of the casing and position it as shown in figure 3.
Using a pliers, very carefully bend the 2 pins circled in red as shown
in figure 4 and figure 5. From my experience I only needed to bend
these 2 pins outward a little bit to lift the metal cover off. You
should not need to touch the center pins (circled in blue) to remove
Figure 3 Figure 4 Figure 5
Carefully lift the metal cover off the
motor as shown in figure 6.
Remove the Armature, Idler and spacer as
shown in figure 7. The spacer is no longer required with the replacement
gears. Remove the spacer and discard it as shown in figure 8. The new gears
will not fit properly if you fail to remove the spacer. Figure 9 shows the
motor with all 3 old pieces removed. With the gears now removed, it would be a
good opportunity to apply some lubricant to the 2 shafts. I used Dielectric
grease on mine. TIP: The metal shafts in this
motor DO NOT turn. Only the gears turn. If you plug the motor in
with the armature gear removed, the motor will behave as if it is not
plugged in and will be totally lifeless. When the armature gear
has gone "bad" the motor will also appear lifeless.
Figure 7 Figure 8 Figure 9
Install the new armature gear onto the
shaft as shown in Figure 10. Install the new Idler gear as shown in Figure 11.
See the cut-out in Figure 12 for correct orientation of the arm on the idler.
In order for the motor to run clockwise, the Idler gear must be installed as
shown. If you position the motor as shown in figure 12, you should be able to
spin the Idler gear clockwise.
Important: If you are
repairing an Olympia Beer sign or the Arrow Handicraft Coin clock, the motor
spins counterclockwise. See figure 12A for correct orientation of the arm for
Figure 10 Figure 11
Figure 12 Figure 12A
Now simply replace the metal cover on the
motor. It should snap back into place. Use your pliers to push on the 2 pins
that were bent in step 3 (See Figure 13). Place the motor back into the plastic casing
Figure 13 Figure 14
You're done! Your clock will run
perfectly for a long time to come!
Please send your
questions and comments
The Ball Clock Guy
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