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ktmrfs

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Posted: 05/28/21 10:07pm Link  |  Quote  |  Print  |  Notify Moderator

Seon wrote:

Cummins12V98 wrote:



What about all the "OLD" ATF left in the converter???


You'll never get all the oil out, even by a professional shop



Next time someone drops their oil pan, best to install an oil pan drain plug. Much easier for the next oil change.

[image]


allison already has a drain plug. no need to add one.


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RambleOnNW

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Posted: 05/28/21 11:18pm Link  |  Quote  |  Print  |  Notify Moderator

I’ve got the Ford TorqShift with the external bypass filter in a housing and it’s quite frozen. Couldn’t crack it loose with a 1/2” rachet and didn’t want to break something. Thinking about trying to use a filter wrench on the filter housing along with the rachet on the end nut. Any tips?


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RAS43

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Posted: 05/29/21 06:14am Link  |  Quote  |  Print  |  Notify Moderator

RambleOnNW wrote:

I’ve got the Ford TorqShift with the external bypass filter in a housing and it’s quite frozen. Couldn’t crack it loose with a 1/2” rachet and didn’t want to break something. Thinking about trying to use a filter wrench on the filter housing along with the rachet on the end nut. Any tips?


I haven't had that issue but I'd try using a 1/2" impact gun turned down a bit.

rhagfo

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Posted: 05/29/21 06:55am Link  |  Quote  |  Print  |  Notify Moderator

RAS43 wrote:

RambleOnNW wrote:

I’ve got the Ford TorqShift with the external bypass filter in a housing and it’s quite frozen. Couldn’t crack it loose with a 1/2” rachet and didn’t want to break something. Thinking about trying to use a filter wrench on the filter housing along with the rachet on the end nut. Any tips?


I haven't had that issue but I'd try using a 1/2" impact gun turned down a bit.

Great suggestion, I have seen an impact wrench break loos a nut and using a breaker bar, would have snapped off.

When you do get it off don't over tighten the new one!
When I replace my oil filter on my Cummins, I only tighten the 3/4 turn after the gasket makes contact. I also use used oil in the gasket, can always remove by hand and not a leak yet.


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Cummins12V98

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Posted: 05/29/21 09:04am Link  |  Quote  |  Print  |  Notify Moderator

Geo*Boy Said

"Yes you can. Fill the transmission up, according to the dipstick, remove the return line from the oil cooler, install hose fitting, start truck, pump out a gallon, refill repeat until nice clean fluid appears."




BINGO......We have a winner!!!!!!!

To make it easier check fluid level before starting job. Measure amount removed from pan and replace the same volume then do the start run and refill exactly what has been pumped out.


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Cummins12V98

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Posted: 05/29/21 09:09am Link  |  Quote  |  Print  |  Notify Moderator

azdryheat wrote:

The Allison does come with a drain plug. I was just curious to see what was in the pan. Oh, and Allison does not recommend a fluid flush or exchange.


Show me where they say NOT to do an exchange. Big difference between that and a mechanical flush.

Cummins12V98

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Posted: 05/29/21 09:13am Link  |  Quote  |  Print  |  Notify Moderator

"I also use used oil in the gasket, can always remove by hand and not a leak yet."

The "YET" part is what scares me. If the filter says tighten a certain amount after contact I do so. Honestly if a filter can be removed by hand after 5-15,000 miles that is loose IMHO.

Cummins12V98

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Posted: 05/29/21 09:15am Link  |  Quote  |  Print  |  Notify Moderator

If anyone has figured out how to do a fluid exchange on an AISIN please post method. IMHO it's stupid to not remove all the fluid.

FishOnOne

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Posted: 05/29/21 12:27pm Link  |  Quote  |  Print  |  Notify Moderator

Cummins12V98 wrote:

If anyone has figured out how to do a fluid exchange on an AISIN please post method. IMHO it's stupid to not remove all the fluid.


By having to change the transmission fluid every 30k miles you're essentially doing a fluid exchange.

Sure glad I don't have to worry about having to perform that job every 30k miles IMHO.


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ktmrfs

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Posted: 05/29/21 04:05pm Link  |  Quote  |  Print  |  Notify Moderator

Cummins12V98 wrote:

If anyone has figured out how to do a fluid exchange on an AISIN please post method. IMHO it's stupid to not remove all the fluid.


Since mfg removed the plug on the torque converter, it's hard to remove ALL of the fluid. But if you do changes at the recomended interval, fluid should have plenty of life left in it and no contamination, so draining what you can and refilling should do fine.

I still have ONE vehicle with a drain plug on the torque converter. But that car transmission was introduced in 1990 and by 2000 the mfg had eliminated the torque converter drain plug.

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