Repair trans cooler line
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Junior Member
Joined: Oct 2007
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From: Amherst, MA
Repair trans cooler line
Can someone shed any light on the easiest way to replace a leaking trans cooler line? I haven't worked on these lines before and it looks like there are special crimped fittings that join rubber to trans lines. Is a special tool needed to remove them or is there an easier (less $) way to fix the lines? Can I simply cut out rusted line and install fuel line with hose clamps/hose barbs? Thanks.
Technical Article Contributor
Joined: Jan 2006
Posts: 1,292
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From: Port Royal, SC
Here's a very simple and inexpensive way to repair the line...
1. Buy a tubing cutter and cut out the damaged/degraded piece.
2. Buy a flaring tool kit and put a slight flare in both ends of the hard line.
3. Use a file and de-burr the flares to prevent them from cutting the inside of the new hose.
4. Buy a piece of rubber transmission hose from NAPA. NAPA carries Gates hose and IMO Gates is the best. IIRC the hose is rated to 400 PSI. Get however much you need to fill the gap of the piece you removed.
5. Thoroughly lubricate both ends of the rubber hose with fresh trans fluid and slide either end over the flared hard lines.
6. Apply two clamps to either side. Ensure that you don't apply the clamps directly over the flare or you may cut the hose.
That's it. The flares will not allow the hose to slide and the clamps will keep it from leaking. I've done this myself and it works like a charm.
If you're willing to spend a little more money you could do the following...
1. Follow step #1 from above.
2. Buy and install two AN to Tube Adapter Fittings on the hard lines you just cut. It will depend on the size of the trans hard line but here is a list...http://store.summitracing.com/egnsea...=KeywordSearch
3. Buy a short section of braided stainless steel hose and 2 Straight AN Fittings.
4. Apply the fittings to the hose and apply the assembly to the adapters you installed on the hard lines.
That's it. This is a very strong set-up and looks pretty cool also. I've also done this and it's very easy also. It just costs a little more.
If you need any further help with this, let me know...
1. Buy a tubing cutter and cut out the damaged/degraded piece.
2. Buy a flaring tool kit and put a slight flare in both ends of the hard line.
3. Use a file and de-burr the flares to prevent them from cutting the inside of the new hose.
4. Buy a piece of rubber transmission hose from NAPA. NAPA carries Gates hose and IMO Gates is the best. IIRC the hose is rated to 400 PSI. Get however much you need to fill the gap of the piece you removed.
5. Thoroughly lubricate both ends of the rubber hose with fresh trans fluid and slide either end over the flared hard lines.
6. Apply two clamps to either side. Ensure that you don't apply the clamps directly over the flare or you may cut the hose.
That's it. The flares will not allow the hose to slide and the clamps will keep it from leaking. I've done this myself and it works like a charm.
If you're willing to spend a little more money you could do the following...
1. Follow step #1 from above.
2. Buy and install two AN to Tube Adapter Fittings on the hard lines you just cut. It will depend on the size of the trans hard line but here is a list...http://store.summitracing.com/egnsea...=KeywordSearch
3. Buy a short section of braided stainless steel hose and 2 Straight AN Fittings.
4. Apply the fittings to the hose and apply the assembly to the adapters you installed on the hard lines.
That's it. This is a very strong set-up and looks pretty cool also. I've also done this and it's very easy also. It just costs a little more.
If you need any further help with this, let me know...
Last edited by SWThomas; Oct 4, 2007 at 02:05 PM.
