Radiator cap pressure rating: Mitsubishi  -- Other Tractor Brands Discussion Forum and Review Radiator cap pressure rating: Mitsubishi -- Other Tractor Brands Discussion Forum

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 07-18-2008, 15:24 Post: 155393
charliedog8



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 Radiator cap pressure rating

My D2650FD has been overheating when bushhogging lately. Bushhogging is the only activity that I keep it throttled up for a long time. There doesn't appear to be any coolant leaks, so I flushed the radiator and replaced the cap with a new one rated for 18 lbs. That seems to have worked, but I am concerned that I don't know what the correct pressure rating should be.
Does anyone here know?






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 07-18-2008, 17:50 Post: 155395
greg_g



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 Radiator cap pressure rating

Hopefully you saved the old one. Asian caps are sometimes stamped with a (metric) pressure rating in Atmospheres. Should you find a number like 0.3 or 0.43 (maybe higher), multiply it by 14.696 to get PSI.

//greg//






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 01-06-2009, 09:49 Post: 159122
PILOON



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 Radiator cap pressure rating

On the K3 (MT180D) engine the cap is 12.8 PSI
Stands to reason that the manufacturer would have a standard.

Hope that helps.






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 01-06-2009, 12:08 Post: 159125
auerbach



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 Radiator cap pressure rating

Correct pressure for cooling system is like for tires: it's just a compromise number, because go higher or lower and you get pros and cons. (If you go high, one con is more likelihood of springing a leak as the equipment ages.)

Cap gaskets eventually wear and leak, so you could be seeing the effect of a new cap rather than a higher-pressure one.

I'm sure you know the usual checks (fan, passageways, thermostat if fitted), but if you're using plain water, the right mixture of antifreeze raises the BP as much as higher pressure.






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 01-06-2009, 12:36 Post: 159127
greg_g



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 Radiator cap pressure rating

Quote:
Originally Posted by auerbach | view 159125
Correct pressure for cooling system is like for tires: it's just a compromise number

No, I'm sorry - it's not. The cooling system pressure rating is an engineered number - not unlike oil pressure. Installing a cooling system pressure cap of a mismatched rating can - at a minimum - result in either overheating (under-rated cap) or leakage (over-rated cap).

When you install a NEW cap of the CORRECT pressure rating - and THEN see leakage (or overheating), you know that it's time to start replacing OTHER cooling system components too.

//greg//






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 01-06-2009, 15:26 Post: 159134
kthompson



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Note this began in July.






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 01-06-2009, 15:54 Post: 159137
earthwrks

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 Radiator cap pressure rating

Noted. Thank you Officer.






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 01-06-2009, 16:27 Post: 159138
Murf

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 Radiator cap pressure rating

Hey, it was July of THIS year though, that's better than some we get. Laughing out loud

Best of luck.






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 01-06-2009, 17:07 Post: 159140
earthwrks

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Me thinks Kenny is getting as anal as me. hahaha

Maybe he's my brother from a different mother?






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 01-07-2009, 08:07 Post: 159154
kthompson



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Quote:
Originally Posted by earthwrks | view 159140
Me thinks Kenny is getting as anal as me. hahaha Maybe he's my brother from a different mother?




AND FATHER. But you do remind me of a bother in law.. Smile


Murf, you is right. Just thought the issue may not be as "hot" as it once was. How about that EW?






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Discussion Boards > Active Subjects > Messages as Posted > Mitsubishi Forum

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