11-24-2014, 03:43 PM
I finally spent a little time over the weekend examining my 690 in more detail
The control shafts and tuning dial were slumped down and rubbing so I figure it needs new rubber mounts.
Removing the upper chassis turned out to be quite easy. It appears that no work has been done to it other than replacing tubes.
[Image: https://farm8.staticflickr.com/7508/1523...6a75_c.jpg]
Turned out there were no rubber mounts up front at all. No wonder it bottomed out!
[Image: https://farm8.staticflickr.com/7563/1585...61aa_c.jpg]
The original rear mounts were in good condition so I left them in and dug up a couple reproductions for the front.
[Image: https://farm8.staticflickr.com/7490/1523...7ec2_c.jpg]
Much better
[Image: https://farm8.staticflickr.com/7556/1585...6b97_c.jpg]
I also cleaned up the tubes a little and tested them. The 5X4 and 6B4s are all good. Several of the tubes on the upper chassis have been replaced with metal or GT types. I'll try to put together a full set of "G" tubes for it.
Can't say for sure when I'll begin the full restoration but this is very encouraging.
[Image: https://farm8.staticflickr.com/7555/1583...9305_c.jpg]
The control shafts and tuning dial were slumped down and rubbing so I figure it needs new rubber mounts.
Removing the upper chassis turned out to be quite easy. It appears that no work has been done to it other than replacing tubes.
[Image: https://farm8.staticflickr.com/7508/1523...6a75_c.jpg]
Turned out there were no rubber mounts up front at all. No wonder it bottomed out!
[Image: https://farm8.staticflickr.com/7563/1585...61aa_c.jpg]
The original rear mounts were in good condition so I left them in and dug up a couple reproductions for the front.
[Image: https://farm8.staticflickr.com/7490/1523...7ec2_c.jpg]
Much better
[Image: https://farm8.staticflickr.com/7556/1585...6b97_c.jpg]
I also cleaned up the tubes a little and tested them. The 5X4 and 6B4s are all good. Several of the tubes on the upper chassis have been replaced with metal or GT types. I'll try to put together a full set of "G" tubes for it.
Can't say for sure when I'll begin the full restoration but this is very encouraging.
[Image: https://farm8.staticflickr.com/7555/1583...9305_c.jpg]