trans cooling
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Senior User
Joined: Apr 2011
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From: Southern Oregon
trans cooling
Anybody ever bypass the trans cooler in the radiator and use an external cooler in its place along with the regular 6.0 trans cooler. I think the tranny cooler in the radiator is not helping it cool.
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Senior User
Joined: Apr 2011
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From: Southern Oregon
o1 F350/V-10/4R100. Have already installed the 6.0 cooler. Pulling my 5th wheel...truck and 5ver at approx. 18.5K. Pulling a long grade....temps get up to 215-220 then down the other side of the grade they get back down to around 190. Cruising on flat ground...runs right around 190-195.
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Senior User
Joined: Apr 2011
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From: Southern Oregon
Flow is is good......just put the 6.0 cooler in place of the V-10 that was there. Has always ran a little warm. Guy I got the truck from had the trans rebuilt @ 90k. According to the invoice I have....says the tranny cooling system was flushed and cleaned. That is why I put the bigger cooler in because I heard you cannot flush them. That got me to thinking about the cooler in the radiator. And the fan does work....when pulling sometimes..you can hear the fan lockup and roar.
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Cargo Master
Joined: Jun 2003
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From: Somewhere Saskatchewan
Flow is is good......just put the 6.0 cooler in place of the V-10 that was there. Has always ran a little warm. Guy I got the truck from had the trans rebuilt @ 90k. According to the invoice I have....says the tranny cooling system was flushed and cleaned. That is why I put the bigger cooler in because I heard you cannot flush them. That got me to thinking about the cooler in the radiator. And the fan does work....when pulling sometimes..you can hear the fan lockup and roar.
By flow I meant direction. Don't assume it is correct.
I am not trying to be a smart donkey.
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Thread Starter
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Senior User
Joined: Apr 2011
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From: Southern Oregon
Am going to assume the routing is ok....when I installed the new cooler I put the hoses back in the d=same position. Will see if I can find a diagram of how they route. The temps are on the trans gauge.
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Senior User
Joined: Apr 2011
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From: Southern Oregon
Ok...thanks. Looks like it would have been very hard for the trans shop to mix the lines up since they are hard lines. Does it make any difference on which spot on the radiator the line that comes from the front of the tranny goes to?
Cargo Master
Joined: Jun 2003
Posts: 2,982
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From: Somewhere Saskatchewan
Thread Starter
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Senior User
Joined: Apr 2011
Posts: 447
Likes: 1
From: Southern Oregon
Thanks for all the help! Will check it out this morning. Guess if it is correct.....may have to check the fan clutch is nothing else.
Cargo Master
Joined: Jun 2003
Posts: 2,982
Likes: 7
From: Somewhere Saskatchewan
Proper routing into and out of the radiator.
In at the farthest connection from the lower rad hose.
Out at the closest connection to the lower rad hose.
Reason being.
Coolant is being drawn into the engine from the coldest part of the radiator.
Which means transmission fluid will be cooler going into the external cooler.
In at the farthest connection from the lower rad hose.
Out at the closest connection to the lower rad hose.
Reason being.
Coolant is being drawn into the engine from the coldest part of the radiator.
Which means transmission fluid will be cooler going into the external cooler.