Water Pump Tell Tale Hole

[Anthony Duffield]

If the seal on my water pump fails, where will the water leak from, where exactly is the tell tale hole?Many thanksTony

[Richard Negus]

Here!

4002-35.jpg

Poke a bit of stiff wire up it to confirm it isn't blocked.

[Anthony Duffield]

Richard,Many thanks for your prompt reply.I have not owned my Commander long and this last weekend renewed the coolant, after getting the engine up to temperature I noticed a dribble from the area you highlighted, on closer inspection I found the water to be coming from a grub screw in what I know now to be the water pump tell tale hole, looks like I will have to overhaul the pump.Thanks again for your help.RegardsTony

[Richard Negus]

Tony,The hole is threaded to allow it to be temporarily plugged during original manufacture pressure test. It certainly shouldn't have a plug in it now! If the seal is leaking coolant, it can only then escape through the bearings, doing them no good at all.Fitting a plug is a bodge to conceal a leaking water seal from a potential buyer's notice.R.

[Anthony Duffield]

Pump stripped, overhaul kit ordered from Startright, not sure until I receive the new mechanical seal if I will have to machine the pump housing. Unless someone has the size of the new seal at hand?