1980's centrifugal water pump, lubrication question

[Portugal lister]

Hello everyone,

I want to ask for some advice on what lubrication this belt driven water pump should have.

I have tried placing a screw driver in the fill hole and the shaft is in the way, i only get a tiny mark on screwdriver tip but it looks to be a clear "oil".
It does not smell like gear oil.

Also the pump has no drain hole in it, only the fill hole, so i assume removal of pump to empty out old 'oil' but then, how much to fill it and with what type of oil.

I have tried searching the make online with no results.

Any advice would be gratefully received as we use the pump regularly and is driven by my Lister CS12-2 which i am about to overhaul so it would be nice to change the oil in the water pump too.

[dax021]

If you are referring to that place where the funnel is, I don't think it is for oil.  To me it looks like a primer hole.

[Portugal lister]

HI Dax021

I mean in the 'gearbox' i have circled it. theres a bolt and is where i found some oil on the end of a screwdriver, but have no idea what oil or how much it should have.
And yes the small brass funnel on top of the impeller is the primer.

Cheers
Alex

[dax021]

Sorry, my bad.  No idea how much oil, but at a guess, I would think that there is a felt pad in there somewhere and would need just to be kept moist

[Portugal lister]

When i poke a screwdriver in there it hits the shaft and can't feel or see anything else.

Ive been using the pump and wanted to check i wont be burning something out in there if low on lube, from what i read on the net it should either be a grease or type of oil, what i see on the screwdriver is not a grease but looks clear.
Also very odd there is no drain plug only the one circled.

Cheers

[sirpedrosa]

Hi Alex, Gentles

IMMO its a oil sump to lubricate the 2 shaft bushes/bearings.

Cheers
VP

PS: search for RUTSCHI pump.

[dax021]

I agree with VP and would guess that a couple of squirts from an oil can every now and again can't hurt and should be enough

[Portugal lister]

Thanks Dax021 and as always Valdemar.

I have contacted both companies by email, Tecnidraulica and Rutschi.

Tecnidraulica replied but told me they have lost all records for this time period. I have not heard from Rutschi yet.

Can i ask what sort of oil would you use?
What is in there now looks clear.

Thanks guys!

[dax021]

Just about anything will do.  What's in your oil can right now?

[Portugal lister]

Thanks Dax021.

I got a reply from the manufacturer about the oil, he said a 80w90 EP fluid.

What is in there is not that thick so i will put something lighter in there, thanks for the help!

Cheers