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Beolover SyncDrive: DC Platter Motor Replacement for Beogram 4002 and 4004 (Type 551x and 552x)

Late Beogram 4002 and the 4004 (Types 551x and 552x), which have DC platter motors instead of the earlier synchronous AC motors usually suff...

Sunday, May 28, 2017

Beogram 4004 (5526): Adjusting a Bent Aluminum Panel Alignment Pin

When I initially received this Beogram 4004 (5526), removing the aluminum panels took me a while. The main panel around the platter was completely jammed in a 'too far forward' position, which prevented its release by sliding the plinth forward (basically the plinth could not be moved far enough to release the panel). Once the panel was finally off (convinced with a bit of 'gentle violence') it became clear what the issue was:
The alignment pin on the left side was bent forward, which forced the panel to seat too far forward, too. These pins go into holes drilled into the bottom of the panels. This shows the corresponding hole:
The dab of white goo at 5 o'clock is a bit of Alene's glue transferred from the pin, which I used to get me an approximate position of the bent pin relative to the hole when the panel was aligned. After bending the pin a few times iteratively and watching where the glue moved I was finally able to get it properly aligned holding the panel in the correct spot:
On to the final adjustments (which require the aluminum panels to be installed properly)...

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