Excellent! Thank you for the response!  Do you know of a lubrication guide? 

NuclearDeLorean wrote:

Excellent! Thank you for the response!  Do you know of a lubrication guide? 

The BC8004 doesn't have its own, stand-alone service manual (that I have ever found). It has its own, specific information as an addendum to the Beocord 8002 manual. With a Beoworld Silver Membership you can get access to the service manuals.

Section 5-3 of the service manual shows the lubrication chart. The various grease and oils are often hard to find. As mentioned, the TriFlow product line has some nice, modern substitutes. I use them quite frequently but there are other good brands of course. From thin synthetic oil to dry lubricant, silicone grease and red grease. It is important to not over lubricate the Beocord units (or Beogram units for that matter).

-sonavor

All sinter-bronze bearings need oil with the right additives infused into their pores under vacuum.
That's the motor and capstan bearings etc.

The tape spools could have a small amount of white lithium grease to their spindles and around their bases.

The rest is not particularly critical, just stay away from the cheap "House-hold"/"Everyday" etc. oils, that
evaporate in days rather than years and leaves a mess behind.
And never use WD40, which does exactly that.

Martin

Ok! I was a machinist for a few years, and yes, I totally understand the difference between cutting oils and lubricant.  I am a little spoiled by my Beogram 4002 color service guide I downloaded from this amazing site!  I have white lithium grease, sewing machine oil, silicone grease as well as standard high and low viscosity oils etc.  

I wish I knew why the two "tape nubs" are sluggish and gummy.  I also wish I knew if I could apply lubricant directly to them from the top and not mess anything up later or below in the mechanism. or if the problem lies deeper in the mechanism and disassembly is necessary.

On every Beocord 800x-9000 I restore I start with taking the mechanical assembly apart to clean it. A bunch of them have black gunk from the deteriorated, original belts. After that I lubricate the necessary parts and install Martin's rubber wheel set. That is a must. I also add the fix for the plastic clutch assembly that is usually cracked. There are a couple of brass bearings in that assembly that I believe Martin was referring to as needing re-infusing. I hadn't thought about that so that is an added step for me. Since all of the above tasks are in the same set of mechanical parts it is best to do all of them at one time. 

-sonavor