Re: heating problem, hose collapses

Posted by txblu on February 25, 2005 at 07:27:57 from (209.151.116.198):

In Reply to: Re: heating problem, hose collapses posted by lucasss on February 25, 2005 at 06:54:47:

Don't remember seeing springs in tractors, but I know in cars you surely needed it.

Course I haven't had that many hoses changed and haven't squeezed one lately. Had the radiator off a '62 4000 Ford the other day and no spring, but the hose was tough; probably didn't need it.

Thinking.

Until the thermostat opens the pump is sucking, but since there is no flow, it does nothing to hurt the hose (gotta push something out to suck something in).

Thinking more.

Then when water starts flowing, I'd say that the area of the tubes is greater (heck I know it is) than the area of the upper hose (under pump outlet pressure) and with gravity feed you have plenty of force on the lower hose (which is larger than the inlet on a lot of engines) probably to stop collapsing on both counts.

So it seems the only way you get enough suction on the bottom of the radiator (pump inlet) is for the volume of water going out of the pump to attempt to exceed the volume coming in which could translate to clogged pipes causing inlet suction and consequently sucking the hose shut.

Fun.

HTH.

Mark

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