Filler tube leak fix.

[69rangerman]

69 FMX -
Can tranny fluid leak out around the tranny fill tube where it enters the case? Even after sitting for a week?

I have a fairly constant drip that appears to be coming from the filler tube - even after it's been sitting for a week. I didn't think the fluid level was that high inside the case.
The rest of the pan and tranny is dry except the puddle around the filler tube, and below the filler tube boss where it puddles and then migrates to the pan gasket. From there it runs down the cooler tube and drips at the lowest point and everywhere in between.

Would a tube O-ring help this?

Preciate any advise.

[fordman]

yes a new oring will fix that leak. lube up the new ring when you install it backintot the transmission. that way it wont want to tear or mess up for you.

[69rangerman]

Thanks Fordman.

I found the o-ring and will install.

Do you know if the tranny dipstick is measuring fluid inside the filler tube? For some reason I thought it was measuring it in the pan.

Does anyone know if the fluid level would be as high as the bottom of the filler tube near the middle of the case?



Thanks again for the help.

[69rangerman]

Sorry for the double post:

Here's a pic of the area in case it helps:

fmx lines, fill and header.JPG

[fordman]

i think it really wouldn't matter where it reads from. be it inside the tube or inside the transmission tube. what would be most important is that it reads in the full area. if you are wondering if you will lose fluid when you pull the tube out. you will. but you shouldn't lose very much. i would say less than a half a quart. maybe as small as a pint.

[69rangerman]

Again thanks Fordman. I'll get to it.

[FORDification]

...Does anyone know if the fluid level would be as high as the bottom of the filler tube near the middle of the case...

Think of it this way:

Take a length of PVC pipe and stick it down into a 55-gallon drum of water. Where is the water level in the pipe? Doesn't it stay even with the level in the drum? The transmission fill tube is essentially the same principle. Even if the end of the PVC pipe was sitting on the bottom of the drum, the fluid level inside it would remain constant with the level inside the drum...assuming the end of the pipe wasn't capped off, of course.

[69rangerman]

Thanks Keith - I see your point.

I guess I always assumed the pan was the only thing that had a volume of fluid in it, and that while the truck wasn't running it all just sat below the level of the valve body - not that it came up to the level of the filler tube boss.

Come to think of it, I usually get at least 2 gallons of fluid through the drain plug when I change the filter. That would more than fill up the pan.