Transmission line routing??
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Elder User
Joined: Sep 2006
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From: NW Burbs of Illinois
Transmission line routing??
This is a continuation of my last thread.
I think I found my problem which is a clog in the send line. I blew them out relentlessly yesterday and had particles coming out, not alot but some. I want to just buy new lines but my question is, I tried following the trans lines and i lose them around the engine. Do our lines go through the radiator or not? Is it safe to bypass that if I use the stock aux cooler as well as the aftermarket cooler that I bought? My temps are staying lower after blowing out the lines but I seem to only have this problem when its around the 0* mark outside so I want to play it safe and try to cover all bases before it gets freezing out and I need to plow again.
Is there some sort of line drawing I can acess that shown the trans line routing?
Thanks, I appreciate it!
I think I found my problem which is a clog in the send line. I blew them out relentlessly yesterday and had particles coming out, not alot but some. I want to just buy new lines but my question is, I tried following the trans lines and i lose them around the engine. Do our lines go through the radiator or not? Is it safe to bypass that if I use the stock aux cooler as well as the aftermarket cooler that I bought? My temps are staying lower after blowing out the lines but I seem to only have this problem when its around the 0* mark outside so I want to play it safe and try to cover all bases before it gets freezing out and I need to plow again.
Is there some sort of line drawing I can acess that shown the trans line routing?
Thanks, I appreciate it!
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,723
Likes: 2,650
From: SE Florida
The lines do go into the radiator. If you bypass the radiator you'll lose a lot of your cooling capacity and probably overheat the trans if you use the truck for plowing.
I don't have a drawing of the routing. The routing was mainly determined to be easy to install at the factory. You don't have to duplicate it. Unless you pull out the engine and trans you might not be able to exactly match the original routing.
The lines go from the front of the trans to the radiator, then to the aux cooler, then to the rear of the trans. I wouldn't run two aux coolers.
And please, don't anyone get me started on how this cooler is supposedly an ATF heater. It is not.
I don't have a drawing of the routing. The routing was mainly determined to be easy to install at the factory. You don't have to duplicate it. Unless you pull out the engine and trans you might not be able to exactly match the original routing.
The lines go from the front of the trans to the radiator, then to the aux cooler, then to the rear of the trans. I wouldn't run two aux coolers.
And please, don't anyone get me started on how this cooler is supposedly an ATF heater. It is not.
Thread Starter
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Elder User
Joined: Sep 2006
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From: NW Burbs of Illinois
LOL Mark on the last comment.
So then can you tell me this..... What is the best way to clean out the lines that go through the radiator? That explains why the air didnt seem as powerful coming out through the send line.
I just want to make sure I get this as clean as I can, I would rather not have to replace the radiator, that problalby wont be cheap.
So then can you tell me this..... What is the best way to clean out the lines that go through the radiator? That explains why the air didnt seem as powerful coming out through the send line.
I just want to make sure I get this as clean as I can, I would rather not have to replace the radiator, that problalby wont be cheap.
Thread Starter
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Elder User
Joined: Sep 2006
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From: NW Burbs of Illinois
Im not sure Mike, Im just trying to cover all my bases. I just installed a new factory aux cooler so I know that is clear. To me it doesnt look like the lines go through the radiator but a bunch of people including Mark say it does go through the radiator. Thats why I want to see the routing diagram so I can figure this out because I do not see where the lines go to the radiator. I see hard lines at the bottom of the radiator that look like trans lines but I dont see how they get there.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,723
Likes: 2,650
From: SE Florida
There is no way to clean the radiator cooler. If it's plugged it needs to be replaced.
Post Fiend
Joined: Feb 2007
Posts: 7,191
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From: Blairsville,Ga
Im not sure Mike, Im just trying to cover all my bases. I just installed a new factory aux cooler so I know that is clear. To me it doesnt look like the lines go through the radiator but a bunch of people including Mark say it does go through the radiator. Thats why I want to see the routing diagram so I can figure this out because I do not see where the lines go to the radiator. I see hard lines at the bottom of the radiator that look like trans lines but I dont see how they get there.
Maybe different years do
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Post Fiend
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From: Middle Tennessee
Hmmm, let me see if I can look this up. I thought we all had those.
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Post Fiend
Joined: Feb 2006
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From: Middle Tennessee
Whoops, found this right off so I'm posting it, back in a few.
CAUTION: Do not attempt to backflush and clean the OTA transmission fluid cooler. Install a new OTA transmission fluid cooler as part of a transmission overhaul or exchange. Failure to follow these directions may result in transmission damage.
CAUTION: Do not attempt to backflush and clean the OTA transmission fluid cooler. Install a new OTA transmission fluid cooler as part of a transmission overhaul or exchange. Failure to follow these directions may result in transmission damage.
Post Fiend
Joined: Feb 2006
Posts: 11,892
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From: Middle Tennessee
Doug, 2003 MY uses both. I'll try to post up the pic, for now:
<title>2003 F-Super Duty/Excursion Workshop Manual</title><link href="S3O%7Eus%7Een%7Efile=S3Ostyle.htm%7Egen%7Ere f.htm" type="text/css" rel="stylesheet">Transmission Cooling
****** content="Transmission Cooling" name="tps_proctitle">
Automatic Transmission
The automatic transmission fluid cooling system consists of:
CAUTION: Do not attempt to backflush and clean the OTA transmission fluid cooler. Install a new OTA transmission fluid cooler as part of a transmission overhaul or exchange. Failure to follow these directions can result in transmission damage.
For fluid cooler flow testing, and backflushing and cleaning procedures, refer to Section 307-01A or Section 307-01B .
<title>2003 F-Super Duty/Excursion Workshop Manual</title><link href="S3O%7Eus%7Een%7Efile=S3Ostyle.htm%7Egen%7Ere f.htm" type="text/css" rel="stylesheet">Transmission Cooling
****** content="Transmission Cooling" name="tps_proctitle">
Automatic Transmission
The automatic transmission fluid cooling system consists of:
- an in-tank fluid cooler inlet tube
- a non-repairable in-tank transmission fluid cooler
- an in-tank fluid cooler outlet tube
- an oil-to-air (OTA) fluid cooler inlet/outlet hose assembly for the 4R100 transmission
- separate fluid cooler hoses for the TorqShift transmission
- an OTA transmission fluid cooler
- a fluid cooler return tube
- hose clamps
- a remote mount fluid filter and bracket for the TorqShift transmission
CAUTION: Do not attempt to backflush and clean the OTA transmission fluid cooler. Install a new OTA transmission fluid cooler as part of a transmission overhaul or exchange. Failure to follow these directions can result in transmission damage. For fluid cooler flow testing, and backflushing and cleaning procedures, refer to Section 307-01A or Section 307-01B .
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
2003 Transmission cooling image:
2003Trannycooling.gif?t=1230428608
Item Part Number Description
1 7A095 OTA transmission fluid cooler
2 — Fluid outlet
3 — Fluid inlet
4 7F113 OTA fluid cooler inlet tube
5 7N291 Fluid cooler tube bracket
6 7A030 In-tank fluid cooler inlet tube
7 7A031 Fluid cooler return tube
8 388160-S101 C-clip
9 7N291 Fluid cooler line clip
10 7H322 Cooler bypass valve (CBV)
2003Trannycooling.gif?t=1230428608
Item Part Number Description
1 7A095 OTA transmission fluid cooler
2 — Fluid outlet
3 — Fluid inlet
4 7F113 OTA fluid cooler inlet tube
5 7N291 Fluid cooler tube bracket
6 7A030 In-tank fluid cooler inlet tube
7 7A031 Fluid cooler return tube
8 388160-S101 C-clip
9 7N291 Fluid cooler line clip
10 7H322 Cooler bypass valve (CBV)
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Doug, there is a flush procedure I won't bore you with because you don't have the flushing equipment and solvent tank. All I can say is you may want to install an extra line filter after all the coolers for debris. Run it for a while after flushing, then replace or remove. This flushing runs the risk of dislodging debris. Your tranny is at a huge risk of damage. Good luck.
