Montgomery Ward Airline
Radio Restoration
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Here is a challenging little project! This Montgomery Wards Airline 62-156
sat in a box in my garage for at least 5 years. It was given to me by a fellow
radio collector who had decided to end his radio activity. I knew this set was
a basket case and decided just to hang on to it until I had time to tackle it.
Although this radio is a mess as you can see from the picture, all the pieces
are there except for the speaker. I decided it was time to do something with it!
The next step was to reproduce the rabbet along the edge of the front piece. I cut a jig
from a piece of scrap particle board so that I could use my router. I installed a collar
and a 1/4 inch straight cutting bit which would allow me to use the jig as a template. The
jig was positioned so that with the collar contacting it would allow the straight cutting
bit to cut the proper width of the rabbet. The rabbet was cut in several passes.
Next the front piece was sanded and inspected for any additional flaws.
This shows the completed front piece, ready for the front veneer. The repaired cabinet
is also displayed.
Next the
finish veneer was applied to the front piece over all the cut outs. The
original veneer was walnut, but I chose to replace it with Honduras
Mahogany because the grain is similar to walnut, but the color is much
closer to the original walnut wood. Fresh cut black walnut veneer has a
gray color to it and makes it harder to duplicate the original finish.
There were 3 sections of veneer on this radio. The sides have the grain
running up at an angle, and the front is straight up and down. First,
using the original front as a guide, rough lines were traced on the front
base as a guide for positioning the veneer. The veneer pieces were cut and
laid on the base to check for fit. The veneer pieces were then glued on
the base. An industrial strength adhesive (available from Paxton Lumber)
was sprayed on both the base and the back of the veneer. The veneer was
then CAREFULLY applied to the base by starting on one side of the veneer
and slowly laying it on until the entire piece was attached. Then pressure
was evenly applied to the entire piece to ensure that it was firmly
attached. Once you press the two pieces together, you cannot remove them.
You get one shot at this! Make sure you dry fit all your pieces first.
Next, the birch veneer was applied to the cabinet sides. The original
veneer was one piece, but I couldn't find any that was long enough so I
cut the length so that it would be divided at the top. There is a cap of
wood screwed on the top of this radio, so the seam won't show anyway. It
also made it easier to apply the veneer. Again, you get one shot at
applying! After the veneer was applied, I used my router and a 1/8 inch
round nose bit to cut the vertical and horizontal lines on the front
piece. Since I had not attached it to the case yet it was easy to clamp it
on the bench and use the router. Next I used a sharp utility knife to cut
out the holes and contours for the veneer. At this point the cabinet is
ready to be glued back together. The front piece was glued to the cabinet
and the base trim was glued at the bottom.
This is the unrestored radio chassis. The filter
capacitors appeared to have been replaced at some time in the radio's
lifetime. Most of the other capacitors appeared to be original. Except for
the power cord and wires from the I.F. cans to the tube grids, most of the
wiring appeared to be in decent shape and
there were no wasp nests or mouse damage. When I service a
radio chassis, all the paper capacitors and filter capacitors are replaced. Any
resistors which have drifted more than 10% from their original value are also replaced.
The volume control was disassembled and the carbon element was cleaned with WD-40 and a
Q-Tip. The control shaft and sleeve were lightly lubricated and the control
reassembled. The tubes were tested and cleaned. The wires coming out of
the I.F. cans to the tube grids were bad and
so they were replaced. The tuning capacitor was cleaned and lubricated. The
speaker was missing, so a similar speaker with a
similar field coil value from my parts stash was obtained and a 5 pin male
plugin fashioned from a dud tube base and new wires were soldered
in. Finally, a cloth covered period style power cord and plugin
were installed in place of the rotting power cord. After double checking
everything, the set was plugged into a Variac and the voltage slowly
increased as the B+ voltage measurements were monitored.
As the tubes warmed up, the set began to emit static from
the speaker. A shot of WD-40 on the bandswitch and the set picked up the
local AM stations!. The set was aligned and then bench tested for several
hours.
Attention was now turned back to the cabinet for the
finish and speaker cloth. The cabinet was lightly sanded with 220 grit
sandpaper and the dust first removed with a vacuum cleaner/brush
attachment, and then with an air compressor. A sealer coat of orange
shellac was sprayed on the cabinet and then lightly sanded with 600 grit
sandpaper. The sanding dust was again removed and then the shading toners
were applied. Mohawk spray toners of medium brown for the front, and Van
Dyke brown for the sides were lightly applied repeatedly until the proper
shade was reached. After drying, the air compressor was used to blow any
dust off and two coats of gloss lacquer were sprayed on. The speaker cloth
proved to be a challenge as the original was glued to the cabinet from the
inside. As the pictures indicate, I didn't get it stretched tight enough,
and may have to remove and reapply it. It's very tricky to get it
stretched evenly and straight. A new cardboard backing was cut out from
heavy poster board material from the Art Store and then spray painted flat
black. This picture shows the completed chassis bottom view, and the
finished cabinet.
The speaker and chassis was returned to the
cabinet and bolted in. There were 3 knobs in a plastic tub in the box when the
radio was obtained, but they didn't fit the shafts. I located 3 matching knobs
from my parts bin and fitted them on the shafts. They are not the correct
knobs, but will do for now. This is a view of the completed set! It's
tuned to 1350 KRNT so I can hear the Cubs lose again! I hope you enjoyed
reading about my restoration project. This was definitely not a set for a
beginner radio collector. I'm not a professional, but I think it turned
out very well. I like the style of the radio, and now the set is playing
once again. |