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2003 4R100 trans maintenance

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Old Jun 11, 2017 | 12:59 PM
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2003 4R100 trans maintenance

Keeping this short I hope.

Trans service (new truck to me). Is there any extra worthwhile trans service kits on the market. I see all kinds of 1970's cork/rubber gaskets and not sure how the filter flow rates are.

Any good flowing top notch service kits available?

Thanks.
 
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Old Jun 11, 2017 | 04:07 PM
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The 4R100 should have a removeable gasket. Unless someone replaced it. Anything else will leak. I always use a Ford filter.
 
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Old Jun 11, 2017 | 04:27 PM
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Originally Posted by 1 Excursion camper
The 4R100 should have a removeable gasket. Unless someone replaced it. Anything else will leak. I always use a Ford filter.
Ba Da Bing !!
 
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Old Jun 11, 2017 | 04:54 PM
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Good deal. I was wondering why the current one isn't leaking at all. Going to check the service manuals also and see if there's any maintenance adjustments for these.

Thanks guys, much appreciated.
 
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Old Jun 11, 2017 | 05:04 PM
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Originally Posted by thor363
Good deal. I was wondering why the current one isn't leaking at all. Going to check the service manuals also and see if there's any maintenance adjustments for these.

Thanks guys, much appreciated.
Just do the Mark K flush, put a trans temp gauge on it and call it good!

Stewart
 
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Old Jun 11, 2017 | 05:49 PM
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I was going to add a 6.0l trans cooler (good time to do it) since it's not likely a hard swap. They don't seem to be all that expensive.

Any good source for a trans temp gauge?
 
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Old Jun 11, 2017 | 06:37 PM
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You have many options for trans temp, the temp is reported through the OBDII plug so any dongle/app on a phone or tablet will work as well a Scan Gauge or Ultra-Gauge type device. Or if you are old school (like me) you can run a stand alone gauge with the sensor in the test port on the side of the trans, I use the GlowShift MaxTow gauge with both the sweep gauge face and a digital reading. MaxTow Transmission Temperature Gauge
Keeping tabs on the trans temp is a very wise thing if towing. And yes, the addition of the 6.0 cooler is a great upgrade that is pretty simple to do, I have the Dorman 6.0 cooler along with the needed hoses, barbed fittings and clamps sitting in my garage waiting to go one at my next trans flush.
 
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Old Jun 11, 2017 | 07:16 PM
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Originally Posted by thor363
I was going to add a 6.0l trans cooler (good time to do it) since it's not likely a hard swap. They don't seem to be all that expensive.

Any good source for a trans temp gauge?
My bad, yeah, adding a 6.0L cooler is a great upgrade. I was thinking internal maintenance so I thought of the flush, but since you didn't mention towing, I didn't think about better cooling, just maintenance.

Stewart
 
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Old Jun 11, 2017 | 07:22 PM
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Originally Posted by thor363
Going to check the service manuals also and see if there's any maintenance adjustments for these.
There are no adjustments to make.
 
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Old Jun 11, 2017 | 07:27 PM
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I added the valve body. Firms up the shifts.

 
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Old Jun 11, 2017 | 08:29 PM
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I was trying to find a very direct fit cooler so that it mounts like the factory. Hayden has a heavy duty 6.0l trans cooler (778), but the mounting is very different. Any good source on the 6.0 cooler? I have the 3/8-1/2 barbed brass connectors ordered.
 
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Old Jun 11, 2017 | 08:34 PM
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Rock Auto Dorman brand, Ford version 6.0L PSD transmission cooler.

Stewart
 
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Old Jun 11, 2017 | 08:42 PM
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DORMAN 918216 ?
 
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Old Jun 11, 2017 | 08:51 PM
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Originally Posted by thor363
DORMAN 918216 ?
A quick Google search of that part number shows me you're spot-on.

Please do the same for your own verification process, but that does come back to a 6.0L trans cooler made by Dorman.

Stewart
 
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Old Jun 11, 2017 | 09:10 PM
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If you're into extra work...

https://www.ford-trucks.com/forums/1...l#post16873514
 
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