Beogram 4002 (5513): Tangential Arm Assembly Oil Cleanup and Restoration

This second Beogram 4002 project from Houston left off with cleaning up debris and oil from the inside of the cabinet. I continued the oil cleanup after removing the tangential arm assembly from the floating chassis.

Oil was found everywhere. From the lowest level of the arm mechanics to inbetween switch contacts.
Here is the tangential arm position sensor assembly completely stripped down for oil cleanup.

Once everything was wiped down and as much of the old oil removed I could begin going through the arm assembly restoration and adjustment steps.

I am doing something a little different on this Beogram regarding the lubrication. Up until now I have always used modern available lubricants like silicone grease and synthetic oils when going through a Beogram 4002 turntable project. I spent the last few weeks searching for the lubricant products that are listed in the Beogram 4002 service manuals. I say manuals because B&O changed a few of the lubricant instructions in the various Beogram 400x manuals.

I will start with the tonearm damper. After taking it apart and cleaning the damper assembly I reassembled it using Dow DC 200 fluid for the damper lubricant.

Next was the tonearm assembly spindle and tie-bar shaft reassembly. For the lubrication of those the service manual calls for the following -
On the spindle: Rocol MTS 1000 diluted to an oily viscosity using Esso NUTO H44 or H32.
On the tie-bar shaft number 137: Molykote DX paste (white)

I was able to find some Rocol MTS 2000 and Mobile NUTO H32 for the spindle lubrication. They were not the easiest products to acquire.

The Molykote DX white paste however is easily available. Here is the tangential arm assembly reinstalled on the floating chassis.

At this point of the mechanical restoration I adjust the tonearm lowering damper, tonearm to fixed arm parallelism and calibrate the tonearm counter weight for the tracking force.

This tangential arm assembly and floating chassis are ready to be reinstalled in the Beogram cabinet.

My next step is to prepare the cabinet by installing new Beolover transport bushings (3D printed parts) and install the Beolover replacement reservoir capacitor assembly (another 3D printed part).

After that it will be time for the remainder of the electrical restoration work - capacitor replacements, relay replacements and the Beolover rebuilt platter motor.