Leaking tranny cooler lines!
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Fleet Mechanic
Joined: Jan 2012
Posts: 1,668
Likes: 13
From: Saskatchewan
Leaking tranny cooler lines!
Hello everyone, my 2003 screw's tranny cooler lines are leaking right where the rubber hose crimps onto the steel line. Has anyone tried to cut or remove the factory hose crimps and slide a piece of hose over the steel line and secure using hose clamps? If so what size of hose was used? How did you remove the factory crimps? You would think with all the technology out there now they could build some tranny lines that don't leak? Oh well, they did make it 120 000 km not to bad I guess. Thanks in advance for the help.
Tuned
Joined: Feb 2013
Posts: 474
Likes: 4
From: SE Michigan
Hello everyone, my 2003 screw's tranny cooler lines are leaking right where the rubber hose crimps onto the steel line. Has anyone tried to cut or remove the factory hose crimps and slide a piece of hose over the steel line and secure using hose clamps? If so what size of hose was used? How did you remove the factory crimps? You would think with all the technology out there now they could build some tranny lines that don't leak? Oh well, they did make it 120 000 km not to bad I guess. Thanks in advance for the help.
Fleet Mechanic
Joined: Sep 2003
Posts: 1,716
Likes: 15
The cooler lines are not high pressure, so I would expect the crimp sleeve setup to be the same as on many engine coolant and heater lines which I have salvaged.
I use a dremel grinding disc, and grind through the crimp sleeve lengthwise, in two parallel cuts a ways apart. You can and will have to cut into the hose some with the disc, but don't cut so deep through the rubber that you hit the retaining ring on the tube itself. After the two cuts are made, stick the blade of a screwdriver into one of the cuts and twist to bend out the piece between the cuts. Two cuts are done so you can get the sleeve off. One cut won't do it, as you would have to try to bend and expand the whole sleeve to get it off.
Then use the same internal diameter sized hose as what is there now, and a clamp. Of course, use the proper hose type that is rated for cooler duty, hot oil.
Thanks goes to the guys at the ALLPAR forum many years ago for teaching me this, how to put new hoses on an incredibly expensive steel tubing set that went down the chassis to a rear heater on a van.
I use a dremel grinding disc, and grind through the crimp sleeve lengthwise, in two parallel cuts a ways apart. You can and will have to cut into the hose some with the disc, but don't cut so deep through the rubber that you hit the retaining ring on the tube itself. After the two cuts are made, stick the blade of a screwdriver into one of the cuts and twist to bend out the piece between the cuts. Two cuts are done so you can get the sleeve off. One cut won't do it, as you would have to try to bend and expand the whole sleeve to get it off.
Then use the same internal diameter sized hose as what is there now, and a clamp. Of course, use the proper hose type that is rated for cooler duty, hot oil.
Thanks goes to the guys at the ALLPAR forum many years ago for teaching me this, how to put new hoses on an incredibly expensive steel tubing set that went down the chassis to a rear heater on a van.
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