K Y Jelly

[Bow42]

I bet that got you all looking at this posting .
I need to replace my water pump impeller I don't have any Glycerin to hand , can I use K Y jelly ? ,
as that seen to be made from Glycerin .
I promise let the wife know that I used it .

 

[RobinBirch]

Don't see why not. I use washing up liquid on the impeller,

 

[Daydream believer]

Depends where you want to put the impeller when you have greased it







Do you want to store it & preserve it for a while to stop it going brittle over the winter or put it straight back in the pump?

 

[RichardS]

I bet that got you all looking at this posting .
I need to replace my water pump impeller I don't have any Glycerin to hand , can I use K Y jelly ? ,
as that seen to be made from Glycerin .
I promise let the wife know that I used it .

Certainly a lot better than nothing but not as good as silicone grease .......

..... for impellers.

Richard

 

[ghostlymoron]

Anything you put on an impeller isn't going to stay there long so it really doesn't matter. It's only useful to make it easier to get it in initially without damage and lubricate till its full of water.

 

[prv]

It's only useful to make it easier to get it in initially without damage.

Supposedly it keeps it lubricated while spinning until the pump refills with water.

Pete

 

[Daydream believer]

Anything you put on an impeller isn't going to stay there long so it really doesn't matter. It's only useful to make it easier to get it in initially without damage.

Yes- could damaged a vein if you put it in the wrong way round

 

[oldharry]

Supposedly it keeps it lubricated while spinning until the pump refills with water.

Pete

Lubrication, and improves the seal fro initial priming. If the impellor is not going straight back into service, like at the beginning of the winter lay-up, then I would avoid using washing up liquid. It has some pretty powerful oxidants and left standing for extended periods could do damage. depends very much on whats in it! If its going in to service straight away then it will of course be washed out more or less immediately!

 

[RichardS]

Yes- could damaged a vein if you put it in the wrong way round

Might even bust a blood vessel.

But don't worry, the vanes will always flip back the "right" way almost immediately without doing any harm, unless it's a really old time-hardened impeller which needs replacing anyway.

Richard

 

[bedouin]

If you want a serious answer - KY Jelly is water based / water soluble so won't last long - but then again I would not normally have put any lubrication on the impeller.

 

[Poignard]

If you want a serious answer - KY Jelly is water based / water soluble so won't last long - but then again I would not normally have put any lubrication on the impeller.

If you want another 'serious answer' , I just wet the impellor before putting it back. Seems to work fine.

 

[RichardS]

If you want another 'serious answer' , I just wet the impellor before putting it back. Seems to work fine.

And if you want another serious answer/s, go back to post #4 or post #2.

Richard

 

[NormanS]

Yes- could damaged a vein if you put it in the wrong way round

That is an old wife's tale, and is nonsense.

 

[Norman_E]

Might even bust a blood vessel.

But don't worry, the vanes will always flip back the "right" way almost immediately without doing any harm, unless it's a really old time-hardened impeller which needs replacing anyway.

Richard

Not always. I took the impeller out of my engine last year and found two vanes bent the wrong way, and I guess it must have worked all season like that.

 

[RichardS]

Not always. I took the impeller out of my engine last year and found two vanes bent the wrong way, and I guess it must have worked all season like that.

As I said, if that is correct all that means is it that the impeller needed changing anyway as the vanes have stiffened up. However, it's almost impossible to infer that your vanes were like that all season as diesel engines sometimes flip back a fraction of a rev on compression when they stop and this might well be enough to flip back a couple of the vanes. It's not a problem as they will flip back when the engine is next started.

Richard

 

[LadyInBed]

Anything you put on an impeller isn't going to stay there long so it really doesn't matter. It's only useful to make it easier to get it in initially without damage and lubricate till its full of water.

Lubrication on the shaft also makes taking it out easier!

 

[LadyInBed]

Not always. I took the impeller out of my engine last year and found two vanes bent the wrong way, and I guess it must have worked all season like that.

That could be due to a bit of counter rotation when removing the pump.

 

[Robert Wilson]

Might even bust a blood vessel.

But don't worry, the vanes will always flip back the "right" way almost immediately without doing any harm, unless it's a really old time-hardened impeller which needs replacing anyway.

Richard

Thank you, sir. You have just answered a "does the light stay on in the fridge when the door is closed?" for me.

I can restart my engine with absolute confidence now :encouragement:

 

[sailaboutvic]

If you look inside the pump you will see that the cam is chamfered so even if the vanes where the wrong way once they come in contact with the cam they will point in the right direction .

Do any one know where you can by Glycerin?

 

[bedouin]

Do any one know where you can by Glycerin?

Chemists often sell Glycerin - as do bigger supermarkets (often near the icing sugar)