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From: cuhulin on 10 Apr 2010 20:43 Some people would probally call it the p.. hole. Oooops,,,,, cuhulin
From: cuhulin on 10 Apr 2010 20:54 One of the places where I used to work was a cotton oil plant.The pumps in the solvent extraction area where I worked, the pumps had square graphited rope packing.It was a constant chore not having the packing glands not tightned too tight and not too loose.That was Hexane fluid (it is kin to lighter fluid) being circulated around inside of the pipes.Very Flamable stuff it was too! The tools we used in there were bronze non sparking tools.Breathing too much of that Hexane fluid would make you ''high'', but it was the wrong kind of a ''high'' cuhulin
From: hls on 11 Apr 2010 10:20 "lugnut" <lugnut(a)roadkill.net> wrote in message I suspect the coolant will > collect around the bearings with the hole on top. > > Lugnut It might collect a little bit, but would that really be an issue? Those bearings are, IIRC, bronze bushings and they tolerate coolant pretty well. The contact with coolant may provide part of the lubricity. (As you would remember, people used to put water pump lubricant in their radiators, which was nothing more than "soluble oil". Ate up the hoses, but maybe lubed the pump shaft a little).
From: hls on 12 Apr 2010 14:20 "lugnut" <lugnut(a)roadkill.net> wrote in message news:mgg6s5tts0pq1djm2gmkfof6appbto4ved(a)4ax.com... > On Sun, 11 Apr 2010 09:20:01 -0500, "hls" <hls(a)nospam.nix> > wrote: > >> >>"lugnut" <lugnut(a)roadkill.net> wrote in message I suspect the coolant >>will >>> collect around the bearings with the hole on top. >>> >>> Lugnut >> >>It might collect a little bit, but would that really be an issue? >> >>Those bearings are, IIRC, bronze bushings and they tolerate coolant >>pretty well. The contact with coolant may provide part of the >>lubricity. (As you would remember, people used to put water >>pump lubricant in their radiators, which was nothing more than >>"soluble oil". Ate up the hoses, but maybe lubed the pump shaft >>a little). > > > I don't know of any modern automotive water pumps that use > bushings for bearings. Bushings do not wear well in high > speed applications like modern cars and trucks or small to > medium marine and industrial engines. Every automotive app > I can think of uses frictionless (ball or roller ) bearings > in the water pump. In the old days - and I am sure is > currently the case - pumps using bushings required zerk > fittings and frequent lubrication during operation. I have > seen those in older units. I have also seen pumps that use > oil cooling and lubrication for the WP bearings. The weep > hole in most of these applications is between the water seal > and the neaeest bearing to minimize the chance of coolant > getting to the bearings. Water pump lube was never for the > bearings. It was to provide some protection and longer life > for the coolant/pump seals. Most commercial > antifreeze/coolant has enough lube quality for this > nowadays. You will still find packing type seals in > applications that use raw water like marine units to supply > water-to-water heat exchanger cooling systems. > > Lugnut I cant challenge you because I havent taken a water pump apart and rebuilt it in a long time. And that last one definitely had a bronze bushing. Water or coolant does have some lubricating ability. Block polyols were evaluated as coolant system lubricants, and did work, but it was for the bearing surfaces, not the seals. The old "soluble oil" lubricants were also for the pump shaft, and probably worked some, but they did eat up the hoses, etc.
From: Tegger on 14 Apr 2010 18:54
"hls" <hls(a)nospam.nix> wrote in news:MNednRXnmabr- V7WnZ2dnUVZ_j6dnZ2d(a)giganews.com: > > I cant challenge you because I havent taken a water pump apart > and rebuilt it in a long time. And that last one definitely had a > bronze bushing. How far back are we going here? 1960? 1940? > > Water or coolant does have some lubricating ability. Block polyols > were evaluated as coolant system lubricants, and did work, but it > was for the bearing surfaces, not the seals. > > The old "soluble oil" lubricants were also for the pump shaft, and > probably worked some, but they did eat up the hoses, etc. > I'd be surprised if any car built after about 1975 had bushings in the water pump. -- Tegger |