WD40

no smell, just wipe it after you have sprayed.

give it a few turns / wriggles…

it’s best if you can get right into the mech and spray there.

timmmay: Interesting, thanks. The food grade one says it is odourless, the other doesn't mention smell, so that might be worth trying 🙂

I'm still happy to get other opinions or approaches.

2nd on the silicone food grade gel. It is also handy on kitchen appliances such as bread maker paddle that gets stiff.

Goosey:

 

WD40

 

no smell, just wipe it after you have sprayed.

 

give it a few turns / wriggles…

 

it’s best if you can get right into the mech and spray there.

 

Personally, I think WD40 type sprays are a poor lubricant, especially for something like this. Those sprays seem to evaporate quickly so you don't get a lasting benefit. For something like this, they're also too runny. If you use a lot it will run down the door at a later date.

I suggest a grease. For a low temperature job like this, anything would do. If there's any rubber near the thing you are lubing, choose a grease that won't eat rubber.

My grandfather swore by Singer Sewing Machine oil ... for everything!

Schlage manuals say petroleum based grease was originally used on anything needing lubrication with graphite on pin tumblers in lock cylinders.

Bung:

Schlage manuals say petroleum based grease was originally used on anything needing lubrication with graphite on pin tumblers in lock cylinders.

timmmay: Interesting, thanks. I called them today, my question has been sent to a product manager. I expect a call backv or email at some point.

Geeze, you're pretty optimistic!

neb:

 

timmmay: Interesting, thanks. I called them today, my question has been sent to a product manager. I expect a call backv or email at some point.

 

Geeze, you're pretty optimistic!

 

Scientifically speaking, this should not be taken lightly! After all, I had to think about it in depth before I decided not to let any high-tech gun oil containing Teflon (PTFE) get on my hunting guns, as the combustion of the propellant charge produces toxic hydrofluoric acid and I don't want that in my game meat via the fired bullet.

After all, in this particular case we are talking about something as complex as a squeaky door handle spring and a wife. And you should always listen to the manufacturer's product manager and not make reckless, unauthorised decisions. 😉😁

Schlage have said they will replace both door handles from their warehouse stock because something doesn't sound right. They've also provided a courier ticket to send the old handles back. They didn't say what lubricant should be used, but they said CRC probably isn't ideal say "They believe the CRC might not be the right solution due to attracting dust, which is what I believe is what you saw as the black dust when you took the hardware off the door."

That's a good solution. Hopefully the new one works for years without problems, but given I've already had three do the same thing that may just be wishful thinking. I'm moderately confident the manufacturer will help solve the problem though.

Thanks all for your suggestions :)

timmmay:

Schlage have said they will replace both door handles from their warehouse stock because something doesn't sound right. They've also provided a courier ticket to send the old handles back. They didn't say what lubricant should be used, but they said CRC probably isn't ideal say "They believe the CRC might not be the right solution due to attracting dust, which is what I believe is what you saw as the black dust when you took the hardware off the door."

 

That's a good solution. Hopefully the new one works for years without problems, but given I've already had three do the same thing that may just be wishful thinking. I'm moderately confident the manufacturer will help solve the problem though.

 

Thanks all for your suggestions :)