overfilled transmission what can be damaged?
#87036
07/10/08 11:21 PM
07/10/08 11:21 PM
|
Joined: Nov 2005
Posts: 15,118
85086
moparpollack
OP
Lil Herman
|
OP
Lil Herman
Joined: Nov 2005
Posts: 15,118
85086
|
What damage can be done with an over filled transmission? The transmission is a 904 with manual valve body and a smaller than stock convertor.Less than a mile driven I will drain it out tomorrow.
56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d
|
|
|
Re: overfilled transmission what can be damaged?
[Re: dOc !]
#87038
07/11/08 12:08 AM
07/11/08 12:08 AM
|
Joined: Jan 2003
Posts: 720
Texas
jetdoctor_75402
super gas
|
super gas
Joined: Jan 2003
Posts: 720
Texas
|
welllll, lets see now, 1969 Charger RT 440/TF automatic and the previous owner, changed the filter and re-filled the trans.  Drove it from Garland TX to Greenville, TX, about 40 plus miles. Made it to Lake Ray Hubbard Bridge, about 8 or 9 miles from his shop and noticed lots of white smoke billowing from under the car and out the tailpipes (I thought).  Turns out, they filled the trans with car shut off and it was a tad overfilled.  Took 5 quarts of fluid to get home. When we dropped trans, we replaced the front pump seal, rear seal the o-ring on the dipstick tube and that was plenty enough.  So yea, you can damage a few "inconsequential"  things when you over fill a torqueflight. regards, doc
|
|
|
Re: overfilled transmission what can be damaged?
[Re: jetdoctor_75402]
#87039
07/11/08 12:18 AM
07/11/08 12:18 AM
|
Joined: Nov 2005
Posts: 15,118
85086
moparpollack
OP
Lil Herman
|
OP
Lil Herman
Joined: Nov 2005
Posts: 15,118
85086
|
Thanks for the help. 
56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d
|
|
|
Re: overfilled transmission what can be damaged?
[Re: dOc !]
#87042
07/11/08 09:29 AM
07/11/08 09:29 AM
|
Joined: Dec 2004
Posts: 1,061
New Mexico
dmerc
super stock
|
super stock
Joined: Dec 2004
Posts: 1,061
New Mexico
|
I just reread the post.. Whoops, Never mind!
Last edited by dmerc; 07/11/08 12:08 PM.
|
|
|
Re: overfilled transmission what can be damaged?
[Re: RodStRace]
#87045
07/11/08 09:13 PM
07/11/08 09:13 PM
|
Joined: Jan 2003
Posts: 3,488
Annapolis, MD, USA
Vert
master
|
master
Joined: Jan 2003
Posts: 3,488
Annapolis, MD, USA
|
Quote:
just like an engine, there is a level inside that should not be exceeded. If it is, the fluid can get whipped into foam and then you are pumping air and ATF through the trans. It can damage the bearing surfaces, but it would take more than a mile or 2... 
An engine has a crankshaft with arms sticking out a few inches, like a kitchen mixer. What sticks out on a tranny shaft to beat fluid into a foam?
|
|
|
Re: overfilled transmission what can be damaged?
[Re: Vert]
#87047
07/11/08 10:21 PM
07/11/08 10:21 PM
|
Joined: Sep 2005
Posts: 12,481
Chino Valley
RodStRace
I Live Here
|
I Live Here
Joined: Sep 2005
Posts: 12,481
Chino Valley
|
Quote:
An engine has a crankshaft with arms sticking out a few inches, like a kitchen mixer. What sticks out on a tranny shaft to beat fluid into a foam?
Ever see a shake mixer? It's just a long rod with a disc at the end. It still mixes...
|
|
|
Re: overfilled transmission what can be damaged?
[Re: John_Kunkel]
#87048
07/12/08 02:32 PM
07/12/08 02:32 PM
|
Joined: Jan 2003
Posts: 27,421
Balt. Md
383man
Too Many Posts
|
Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
|
Quote:
Quote:
Hey Doc ...sounds like you went through alot of work for nothing ! .... other than barfing ATF out the vent how would this over-fill process "hurt" the front and rear seals and dip-stick O ring ?
My question too, barfing out the vent and (possibly) foaming are the only negative consequences to overfilling.
Foaming over a long period can cause internal damage but modern fluids have pretty efficient anti-foaming agents. In a somewhat well publicized stunt on another forum I poured a quart of fluid into a mixing bowl and stirred it with a hand-held electric mixer; no foaming.
I totally agree with what John said. Ron
|
|
|
Re: overfilled transmission what can be damaged?
[Re: John_Kunkel]
#87049
07/12/08 03:39 PM
07/12/08 03:39 PM
|
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOc !
The village idiot's idiot
|
The village idiot's idiot
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
|
Quote:
My question too, barfing out the vent and (possibly) foaming are the only negative consequences to overfilling.
Foaming over a long period can cause internal damage but modern fluids have pretty efficient anti-foaming agents. In a somewhat well publicized stunt on another forum I poured a quart of fluid into a mixing bowl and stirred it with a hand-held electric mixer; no foaming.
Plus a little-bit o' horsepower loss ! ... but other than that ....? ... nada !!
|
|
|
|
|
Said it took x quarts, so I got the funnel out and poured in x quarts. Motor was not running, coverter never got a chance to fill up and at least a gallon of fluid ended up on the ground in a rapidly expanding puddle. Of course you see these puddles when they are already huge creeping out from under the car,
and the funnel is still 3/4 full. Lots of clean up that night.... 
