Thread: 300tdi water pump advice

Originally Posted by finallyrangie

thanks Arthur,

from what I can see it's best to put a metal gasket on rather than the supplied paper one, is that correct?

Paper gasket for the water pump, but the P gasket goes between the block and aluminium housing the water pump sits in.
That will be metal, I don't think suppliers stock a paper one anymore ?

Anyway, good practice to replace that, as well as the three long bolts (if they haven't been already) with cad plated bolts.

Originally Posted by rick130

Paper gasket for the water pump, but the P gasket goes between the block and aluminium housing the water pump sits in.
That will be metal, I don't think suppliers stock a paper one anymore ?

Anyway, good practice to replace that, as well as the three long bolts (if they haven't been already) with cad plated bolts.

As a rule change the 'P' gasket with a metal one, but if the mating surface isn't perfect the metal gasket may not seal and then the paper gasket along with a quality sealant would be the next best thing to do.

Inspect those three long bolts and if there is any sign of corrosion at all, replace them, I use a MolyKote preparation to coat the bolts,
http://www.ellsworth.com.au/pdf/DC_M...s_Selector.pdf
That works well to stop any corrosion and the chance of seizing of those bolts.
.

Thanks Arthur, my suppliers only stock the metal P gaskets with which I've had untold grief so far.

I plan on using Hylomar blue on both sides of the metal p gasket.

Originally Posted by B92 8NW

I plan on using Hylomar blue on both sides of the metal p gasket.

I did that and it still leaked

I work on high pressure gas systems (up to 41 bar) and don't get leaks, yet I can't keep coolant @ under 1 bar in a tdi

I used copious amounts of that horrible smelly black GUD gasket cement, the soft setting one, worked for me .

How about some 'Stag' cement, horrible pink smelly..........................

Seems to me that the smellier it is the better it works

Deano

If the OP is going to this much effort, water pump (is the original leaking ?), 3 bolts and P gasket, then it's probably a good idea to go the whole hog and replace the thermostat and get the radiator rodded/tested as well. Not much more effort and the jobs done properly then.

Deano

Originally Posted by DeanoH

I used copious amounts of that horrible smelly black GUD gasket cement, the soft setting one, worked for me .

How about some 'Stag' cement, horrible pink smelly..........................

Seems to me that the smellier it is the better it works

Deano

Aviation Gasket Goo ?

Yep, use that last time (plus Stag on the Welch plug)

Still leaked