News:

"The phone is a remarkably complex, simple device,
and very rarely ever needs repairs, once you fix them." - Dan/Panther

Main Menu

GPO 232 Plunger Adjustment

Started by FABphones, February 26, 2019, 01:26:00 PM

Previous topic - Next topic

FABphones

I am in the process of reassembling a GPO 232. When I removed the seized plunger I noticed that it appeared to be bent a little out of alignment. Now the plunger has been cleaned and I am at the stage where I need to put it back in place, the fit onto the cradle is tight as it is not straight.

Top photo below, shown on my cutting board grid for reference. Photo underneath on blue background shows a correctly aligned plunger (I have the two additional pieces shown on the second photo, I just didn't photograph them).

My question is, is there anyway this can be straightened? The Bakelite 'T' is fragile so I have to work carefully. Although only a mm or so out of adjustment, it makes all the difference as it catches on the cradle edge when the handset is replaced and therefore won't plunge fully.

Any help re how to work a fix on this would be appreciated.

Thanks.
A collector of  'Monochrome Phones with Sepia Tones'   ...and a Duck!
***********
Vintage Phones - 10% man made, 90% Tribble
*************

RB

If that's bakelite, either heat, which may make it worse,
or, file the catching edge down a little and try that.
Good luck with that one.

andy1702

That's a tricky one. Is it possible to remove the brass bit from the bakelite bit? I'd try to get them apart then straighten the brass part.
Call me on C*net 0246 81 290 from the UK
or (+44) 246 81 290 from the rest of the world.

For telephone videos search Andys Shed on Youtube.

FABphones

Good news, I sussed it. Sharing here for anyone else who might need this fix.

I abandoned trying to repair the plunger - the Bakelite was in danger of snapping - and instead turned my attention to the cradle. Using a mini-tool I removed a little from each side where the  plunger T goes down. Over a centimetre in width each side so plenty of room to work without having an adverse effect. Worked a treat, just took off a mm or so, can barely even tell it was done.

Plunger replaced, works as it should. Hurrah!  :D

Photo:


A collector of  'Monochrome Phones with Sepia Tones'   ...and a Duck!
***********
Vintage Phones - 10% man made, 90% Tribble
*************

RB

Congrats on the fix!
Those are the most satisfying repairs imho

HarrySmith

#5
What is "sussed"
Harry Smith
ATCA 4434
TCI

"There is no try,
there is only
do or do not"

FABphones

Thanks guys.

Sussed definition, to investigate or figure out.

:)
A collector of  'Monochrome Phones with Sepia Tones'   ...and a Duck!
***********
Vintage Phones - 10% man made, 90% Tribble
*************

HarrySmith

OK, I thought so from the way it was used. I am learning English here!
Harry Smith
ATCA 4434
TCI

"There is no try,
there is only
do or do not"