I have 360 in this motorhome, it's been leaking AT fluid, have replaced all the gaskets 3 times. What is the problem, no garage can figure out what is causing this. Within 3 days after new gasket install I'll have a puddle of AT fluid 4' across under the motorhome
2007-01-22 23:47:59 · 3 answers · asked by michael_trussell 4 in Cars & Transportation ➔ Maintenance & Repairs
I own a transmission shop, and have seen this before. What usually causes this is a leak in the cooler lines that runs down and around the pan gasket, making it look like the pan gasket is leaking. The way we find leaks like this is to, jack the rear wheels up, and put the back on jackstands. We then wipe everything on, and around the transmission clean. We tighten the cooler lines, check the seal around the fill tube, the speedometer cable, and any other place that is above the pan to rule this out as the culprit. Then we start the engine, and let it go through the gears, and set there running as if it were going down the road. We then use a good light, and check the pan gasket around every bolt in it. Often the pan has a single bolt hole in it that has a sharp edge around the hole, and when it is tightened down, it cuts the new gasket enough to cause a leak. What we do when we have the pan off, is to use the corner of a steel bench, and a hammer to beat down the holes of the pan to make them flat again. We then use a wire brush on a grinder to really clean the bolt holes of any sharp edges. Then we use a rubber gasket with no sealer on it, and hand torque all the bolts in order to get them tight enough without breaking the gasket around the bolt holes. Another thing to look for is a crack in the case, and make sure there is not a special bolt on the pan bolts that is different from the others, and will only work in one hole, as in a shorter bolt because a regular bolt bottoms out, and doesn't tighten all the way up. The bolts usually use a seal that goes on the bolt itself. Some don't need this seal, and others do. An experienced transmission shop can fix this problem, as many regular mechanics that don't work on these everyday may not know what to look for. Even though they are in fact a very good mechanic, they just don't see this everyday, and may or may not know what to look for.
Glad to help you, good Luck!!!
2007-01-23 00:26:37 · answer #1 · answered by Anonymous · 0⤊ 0⤋
If you have replaced all the gaskets/seals that you could without taking the transmission out it is probably not leaking from those places, probably leaking from the front pump area. Like from the torque convertor seal(possible worn bushing in the pump) Pump seal &/or gasket.
2007-01-23 08:30:09 · answer #2 · answered by George 2 · 0⤊ 0⤋
You'll simply have to take it to somebody that's competent.
2007-01-23 08:30:02 · answer #3 · answered by done wrenching 7 · 0⤊ 0⤋