Using WD40 on Dysons

[Grumpy Jim]

i try not to use wd40, unless to free off seized metal parts.
Ptfe based spray i find ok for moving plastics.

Grease from the tub is good for other applications but a word of warning using the pound shop aerosol style grease.

I believe it is petroleum based, i had an electric black and decker strimmer in for repair, the one with the moving plastic swivel head. stripped - found the bad cable, thought i would clean up the motor and commutator etc whilst in there.

All went well, then i thought after reassembly the head plastics felt a bit rough when twisting and locking into required position, a liberal spray of this grease into the moving plastics well sorted it.....
However, as i suspect it is petroleum based (smells like it to me ) it produced a highly flammable vapour in the head assembly which isnt good with the slightest spark from the motor brushes....

This one exploded as i tested the unit, quite a bang for a small amount of spray grease.
Very funny looking back 

Hello again, Just taken your advice and placed an order for this product 11 50 pm on 15/11/19, it will arrive Sunday 16/11/19 - Good old amazon prime (free trial period of course) no annual paid subscriptions here :)
Not sure on price as I had 15 minutes to place the order and I bought other stuff as well, including the MV recommendation High performance Silicone Lubricant as used by MV (just to cover my bases).
Memo to self - avoid buying stull online after you have had two tins of 8% K cider as you tend to get carried away :)
Ah well, it's only money, you cannot take it with you. Catch you later. Jim.

[Grumpy Jim]

WD40 is fine with plastic, I've used it for years including on Dyson's flimsy plastic with no issues. I use it on everything to clean as well as oil and prevent corrosion.

Rusty, there is only one big niggle that pops into my head when thinking of applying any oils etc., etc., on the under carriage of the vac is what if it dribbles. You clean all the dust etc., on that lovely carpet and shock horror you wonder what those nasty oil stains are on the carpet after you finish. The wife will NOT thank you - Best put a caveat after the oil recommendation as to what is the best carpet oil stain remover :) - just an observation and conclusion.

[dannysdysons123]

WD40 is fine with plastic, I've used it for years including on Dyson's flimsy plastic with no issues. I use it on everything to clean as well as oil and prevent corrosion.

I think its great but I also use it for brush roll bearings but I just saw that apparently it dries out when its hot

[ryevac]

wd40 good for freeing up mechanical, i use it on my fishing reel bale arm bearing before going out as it prevents problems on the small bearing.
Back to vacs, smaller low speed bearings i always used 3in1 oil, ensure the bearing is clean beforehand.
Beater bar bearings, generally had a removeable shim on each side, if so remove and soak bearings in petrol or parrafin.
Fill with general car grease, refit shims and will be good for many miles.
fully sealed bearings or the ones with metal sides, clean as above - dry out then what i used to do was soak them in hot grease. i used a stainless steel pot in which i put a couple of spoons of regular car grease. Pop it on top of my log burner, grease melts (not boils) insert bearings and leave for a couple of hours.
you will find that the melted grease will seep into the bearings, used this method for years.
There are many options, everyone has their own methods, do what works for you, but using wd40 as a bearing long term lube isn't good.

[dysondestijl]

I must admit I’ve not read through previous replies (saw 5 pages and thought sod that) but I don’t ever use WD40 on bearings of any kind in vacuums- it’s flammable so it doesn’t go anywhere near motors (not that it would really burn anyway, but just to be on the safe side), plus it attracts dust and grime so it doesn’t go near brushroll bearings either. A bit of grease or 3 in 1 dribbly stuff usually does the job

[Dysonboy]

As said its ideal for freeing stuff up but thats about it.

If you need to it can kinda borrow you some time on bearings if you cannot at the time replace- for example I had a motor where the bearings were shot, WD40 bought me some time on it and quietned them down until I could afford a motor for it, infact it lasted 3 years before they started to get noisy again- but its not something you should do and should just pack the bearings with new grease, or replace if they are in that bad a state.

[BobFrank232]

WD40 isn't much good on motor or brushroll bearings as it dries out when it gets hot and glues it up again. A silicone based lubricant is much better.

I use it on the motor seal when fitting a new motor  to a Dyson. Although, Vaseline isn't bad too either.

[MVacs]

WD40 isn't much good on motor or brushroll bearings as it dries out when it gets hot and glues it up again. A silicone based lubricant is much better.

I use it on the motor seal when fitting a new motor  to a Dyson. Although, Vaseline isn't bad too either.

We use Mr Sheen or a similar spray or a silicone spray.