My 245 is leaking transmission fluid where the cooling lines are near the auto matic trnsmission. When i stop the engine, the dripping goes on one at the average rate of one drop per ten seconds for about ten minutes and then it stops. It loks as if ATF fluid is is thrown sideways over the exhaust down pipeso isuppose the drippin or squirting is more intense when cruising on the highway. I strongly suspect a pinhole in the cooling line. I could get the replacement part from my parts car a 1986 with the same auto box but it is in a snow bank for at least the next two weeks

In the past I have fixed that kind of problem in the fuel return line with a spliced-in rubber hose and clamps. Can I do the same thing with the ATF line even if there is pressure and heat in that area from the exhaust system?

What is the outside diameter of the cooling line and what size wrenches do I need to disconnect it from the transmission?

I had this problem and found the leak was at hold down clamp.

The tubing is near enough to 5/16" O.D. that I as able to use a brass tube union (available from a local hardware store for about $2.50) for a permanent repair. First step was to cut the line at the wear point using a small tubing cutter. The hardest part was to true-up the tubing O.D. so the union would fit. I used plyers and a file. To keep junk out of the line I inserted a Q-Tip. Install the union, check that the Q-Tip is removed, and top of the transmission fluid.

Good Luck.
--
1984-244 GL with 192K and 1984-244 GL with 260K, 67 Mustang and 62 F- 250 4x4

The outside diameter of the cooling lines I recently removed from my 1991 240 appears to be about 8mm.
Wrench size for the fittings to the transmission is 17mm.
Wrench size for the line-to-radiator and line-to-transmission fittings is 15mm.
If you decide to replace the lines, here are the numbers for the parts you'll need. (and dealer price as of 11/05)
(2) transmission cooling lines #1306839 & #1306840 ($47.43 ea.)
(2) transmission fittings #1239669 ($29.41 ea.)
(2) o-rings for fittings #1233071 ($3.95 ea.)
These parts may be available only through Volvo.

Hope this helps.
Todd S.

Hi.
If you haven't positively found the exact location of the leak, a likely location is at the clamps -- especially the one that holds the lines against the side of the engine because that's where most movement occurs. Remember first that the engine and transmission are bolted together and move as one as they rock back and forth on their mounts, while forward of that clamp the line is attached to the stationary radiator -- therefore, the most movement and chafe occurs at that clamp. Second, a leak can occur at some point and the fluid dribble along some length of the line before it starts to fall off and drip -- where it drips is not necessarily where the leak is. So take a good look at that clamp, especially if the rubber cushion around the lines, under that clamp, is worn.

With a suitable heat/oil resistant hose and good* clamps....
( * preferrably those with a smooth internal surface, rather than the cheap kind that has full-thickness holes through the "strap" for the gear teeth to fit, and that tend to cut through the hose)
.... a temporary repair is quite reasonable.

And I would expect that the lines, between an '86 and '90, are the same.

Good luck.

Thanks every one for the advice.

I have located the pinhole at one eighth of an inch from the long nut where the line connects into the transmission ,very hard to work on with the exhaust pipe and the other line in the area in freezing weather.

It was squirting fluid like a syringe and had formed its own arroyo in the undercoating. I finally sanded off the rust around the end of the pipe, fashioned a donut with some cold weld epoxy or the like mixture that I placed on and around the pinhole and put a 200 watt lamp underneath for 16 hours to help it cure as it was below freezing.
Yesterday I drove the car to the ski hill on a 180 miles trip without any problems so far. I will be keeping eye on the holding clamp area where pinholes are likely to develop

Hi.
I'm glad it worked out, so you have use of your car.

If you've ever done a transmission flush using the "IPD method" (a hose on the radiator output fitting), you will recall that there isn't too much pressure (not anything like oil pressure, for example), so it should hold up for a while. But don't consider this permanent, as I suspect that the ATF will have some negative effect on the long-term adhesion of the epoxy to the metal of the lines. Just consider this a temporary fix (and worthy of regular inspection) until the weather is conducive to a proper repair.

Best of luck, and have a great New Years.