Bush TR82B - UK Vintage Radio Repair and Restoration Discussion Forum

Keith_B · 14th Nov 2008, 4:26 pm

I have been after an "82 B" for some time and everyone always says how reliable and easy to work on these sets are.

This one was acquired in non-working condition. When I examined it, it looked clean enough but the tuning dial was loose. When I turned the dial the pointer stayed put! Removed the dial (string method) and removed chassis.

The rubber bushes had crumbled away and the vanes were seized up. I had some 20mm bushes (used in the electrical trade) and cut them more or less in half. I then curled them up and forced them into the original holes. I then inserted the brass sleeves.

The tuning capacitor was then looked at to see why it had seized. As no vanes were bent I went to the rear and with a spanner and screw driver loosed the end bearing. As soon as I loosened it the capacitor could be moved. I removed the adjusting screw completely and cleaned the five ball bearings with WD40. I then lightly greased the ball bearing and reassembled.

One of the ball bearings was larger than the others and goes in the middle and acts as a pivot. I inserted the bearing with a tooth pick. When I adjusted the end bearing I tightened it so that the vanes looked equal distance to each other when they were meshed.

The radio then worked OK.

howard · 14th Nov 2008, 4:49 pm

Well done Keith,

These and the early TR82Cs don't give a lot of trouble cos they don't have AF117 transistors fitted. I've never heard of a tuning capacitor seizing up as bad as this one was but it was easy enough to fix. The rotten grommets is a common problem, one can get replacements which fit without surgery from Halfords for 99p.

Howard

14th Nov 2008, 4:26 pm	#1
Keith_B Tetrode Join Date: May 2008 Location: Bristol, UK. Posts: 86	Bush TR82B I have been after an "82 B" for some time and everyone always says how reliable and easy to work on these sets are. This one was acquired in non-working condition. When I examined it, it looked clean enough but the tuning dial was loose. When I turned the dial the pointer stayed put! Removed the dial (string method) and removed chassis. The rubber bushes had crumbled away and the vanes were seized up. I had some 20mm bushes (used in the electrical trade) and cut them more or less in half. I then curled them up and forced them into the original holes. I then inserted the brass sleeves. The tuning capacitor was then looked at to see why it had seized. As no vanes were bent I went to the rear and with a spanner and screw driver loosed the end bearing. As soon as I loosened it the capacitor could be moved. I removed the adjusting screw completely and cleaned the five ball bearings with WD40. I then lightly greased the ball bearing and reassembled. One of the ball bearings was larger than the others and goes in the middle and acts as a pivot. I inserted the bearing with a tooth pick. When I adjusted the end bearing I tightened it so that the vanes looked equal distance to each other when they were meshed. The radio then worked OK. Attached Thumbnails

14th Nov 2008, 4:49 pm	#2
howard Nonode Join Date: May 2005 Location: Godalming, Surrey, UK. Posts: 2,593	Re: Bush TR82B Well done Keith, These and the early TR82Cs don't give a lot of trouble cos they don't have AF117 transistors fitted. I've never heard of a tuning capacitor seizing up as bad as this one was but it was easy enough to fix. The rotten grommets is a common problem, one can get replacements which fit without surgery from Halfords for 99p. Howard