Radiator cap pressure rating

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Tazza

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Does anyone know what pressure rating the radiator cap should be on a 743?
I have 2 different ones, one reads 16 PSI the other reads 6 PSI (quite a big difference). The number is stamped on the top of the cap, there are 2 numbers. The one on the top is PSI the bottom one is KPA. I don't see a problem running a lower pressure cap but i don't know alot about this area. About all i know is they pressurize the coolant to increase the boiling point. Will a lower pressure cause a problem if i can't find the correct pressure rating?
 

sterlclan

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I run 7 lb caps on all my trucks Ive found less blown hoses and such with properly mixed coolant boiling shouldnt be a problem just my 2 cents worth Jeff
 

Tazza

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I run 7 lb caps on all my trucks Ive found less blown hoses and such with properly mixed coolant boiling shouldnt be a problem just my 2 cents worth Jeff
Thanks for the reply, i called bobcat and he confirmed i should be using 6-7lb and not the 16 that i have in there now.
 
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