Wurlitzer 1100 Jukebox Repair Journal: Page 3
By Chad Hauris, Retro Electronics and Audio Lab, Midland, TX. 11/18/05
Wurlitzer 1100 repair journal page 1.
Wurlitzer 1100 repair journal page 2
Wurlitzer Jukebox main page.
Retro Electronics Home Page.
In
order to improve the functioning of the selection system, we completely
disassembled the record rack and selection arm assembly. One important
thing to note is that you should release most of the springs before
removing the cover plate as springs will pull tension on the mounting
rods, making it difficult to remove or install the cover.
Here we are starting to disassemble the rack.
Next, we soaked all parts in Varsol for 24 hours. Varsol is a solvent
made by Exxon that is sort of like mineral spirits, it is a fairly mild
petroleum solvent.
Next, we used Gumout spray carburetor cleaner to remove any remaining
junk from the parts, following that up with Con-Tak cleaner. Then, we
polished the parts with Nevr-Dull Wadding Cloth and lightly lubricated
them with Hammond organ generator oil.
Here are the spacer disks and the platters drying.
Upon re-assembling and giving the shaft upon which the selection arm
rides a good lubricating with Hammond organ generator oil, we had good
mechanical performance. However, there were several problems with the
tone arm.
One was intermittent noise in the tonearm wires. We rewired the phono
leads from the tonearm to the jack and the jack to the preamp.
We then found that there was insufficient stylus pressure and that the
tonearm would sometimes not set down at the correct point on the
record. This problem was traced to the tonearm rest bracket being worn
and broken due to metal fatigue. The two requirements of this bracket
are that it keep the tonearm on the resting post while the record is
rising, and when the record is all the way up, clear the rest post to
allow proper stylus pressure.
We used a Delco alternator ID tag that we got from an estate sale to sub for the old bracket and it works great.
Finally here am I with the completed unit.
Coming soon I will provide links to the high-resolution photos of the Wurlitzer 1100 repairs.
Wurlitzer 1100 repair journal page 1.
Wurlitzer 1100 repair journal page 2.
Wurlitzer Jukebox main page.
Retro Electronics Home Page.