Grease in on/off switch HP45



#2

Hi,

Wat kind of grease can you use for the on/off switch in the classic calculators serie?
I have a heavy greasy for ball bearing with teflon in it, so it is viscous enough not to flow away and is real lubricating, but .......??

Any suggestion, comments ?

Thank you.


#3

Hi,

I've put Silicone : HALF A TENTH OF A DROPLET in my 35, 67,22,21 & 25 with success.

However, I would advise NOT to inject it with the usual spray as it would be to much a quantity.

I dismounted the calculator and added silicone just on the on/off or pgm/run switches.

Hope it helps.

Etienne

#4

I have used Permatex Superlube teflon based grease, Radio Shack Lube Gel, or Dow 111 vacuum grease.

#5

I use this stuff:

http://www.hmcelectronics.com/cgi-bin/scripts/product/3480-0019


#6

Thank you, I just ordered the grease.

I am a bit afraid if the grease I use today is to acid and will, in time, eat away the copper contacts itself.


#7

I've been using it for about 5 years on many calculators with no damage to the contacts. I wouldn't (and don't) worry about it eating away the copper.

#8

Radio Shack Lube Gel (p/n 64-2326)

Others have recommended this lubricant, which I plan to use on the slide switches on my 34C's.


Possibly Related Threads...
Thread Author Replies Views Last Post
  Request for HP 30b program to switch to ALG-RPN Sujith Abraham 1 192 09-27-2012, 11:00 AM
Last Post: Bruce Bergman
  HP45/32E Connection Matt Agajanian 2 289 07-07-2012, 06:31 PM
Last Post: Matt Agajanian
  HP 48GX Memory Card ON/OFF switch Morten Nygaard Åsnes 2 228 08-22-2011, 03:11 AM
Last Post: Morten Nygaard Åsnes
  HP45 Battery Pack Disassembly Eric_G 4 350 05-11-2011, 11:42 PM
Last Post: Eric_G
  Default switch settings for HP-87 HP-1B David Ramsey 3 281 05-06-2011, 08:52 PM
Last Post: David Ramsey
  HP45 - internal pics Alberto Fenini 2 266 08-17-2010, 04:27 PM
Last Post: Alberto Fenini
  HP45 Original Price Bon 12 665 04-08-2010, 04:14 PM
Last Post: Wingman54
  HP-34C switch problem Giovanni Jimenez 6 433 03-16-2010, 05:05 PM
Last Post: Ed Look
  Power switch repair aj04062 3 252 02-27-2010, 03:24 PM
Last Post: Nigel J Dowrick
  HP50g switch between USB to SERIAL fabrice 8 515 12-31-2009, 10:04 AM
Last Post: Tim Wessman

Forum Jump: