Tranny leaking
Thread Starter
Advanced
Joined: Jan 2012
Posts: 96
Likes: 1
From: Prague Europe
Tranny leaking
Hello guys,
I just purchased my first '73 Vette. The car is clean and allover tech state seems fine but there seems to be tranny leaking a bit. As I'm new to the Vette tech stuff, can you please check and advise how difficult is to solve this? Thank you.
...and here's the point where a picture needs to be inserted, unfortunately not sure how to paste it from a local disk - can anyone advise please?
I just purchased my first '73 Vette. The car is clean and allover tech state seems fine but there seems to be tranny leaking a bit. As I'm new to the Vette tech stuff, can you please check and advise how difficult is to solve this? Thank you.
...and here's the point where a picture needs to be inserted, unfortunately not sure how to paste it from a local disk - can anyone advise please?
Thread Starter
Advanced
Joined: Jan 2012
Posts: 96
Likes: 1
From: Prague Europe
Hello guys,
I just purchased my first '73 Vette. The car is clean and allover tech state seems fine but there seems to be tranny leaking a bit. As I'm new to the Vette tech stuff, can you please check and advise how difficult is to solve this? Thank you.
...and here's the point where a picture needs to be inserted, unfortunately not sure how to paste it from a local disk - can anyone advise please?
I just purchased my first '73 Vette. The car is clean and allover tech state seems fine but there seems to be tranny leaking a bit. As I'm new to the Vette tech stuff, can you please check and advise how difficult is to solve this? Thank you.
...and here's the point where a picture needs to be inserted, unfortunately not sure how to paste it from a local disk - can anyone advise please?
Burning Brakes
Joined: Sep 2012
Posts: 818
Likes: 0
From: coon rapids mn
is it wet buy the flex plate cover ?mite be leaking where the gear shaft goes into the trans casing.if the car sits long enough ,fluid from the converter can drain into the pan raising the fluid level in the pan to the height of the gear select shaft.
Last edited by garygnu; Jan 16, 2013 at 07:44 PM.
Thread Starter
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Joined: Jan 2012
Posts: 96
Likes: 1
From: Prague Europe
The car was sitting long indeed - for over 2 months now. I will be checking the fluid level for sure, but do I think right that if this is the case (and most probably is), the leaking will stop at some point and the fluid level should still be OK? Or I still need to replace the gear shaft seal?
Last edited by Firebird77; Jan 16, 2013 at 07:57 PM.
Drifting
Joined: Dec 2004
Posts: 1,714
Likes: 42
From: Austin Texas
Are you positive it is transmission fluid? Trans fluid is red (ideally) From the photo its hard to tell if that is trans fluid or motor oil. Look at your white oil filter in that photo. Is that black dot a drop of oil? If yes, then it could be that as you drive the motor oil is dripping and blowing back and misting that part of the transmission.
Just a thought. might be way wrong but leaks can be deceiving.
Just a thought. might be way wrong but leaks can be deceiving.
Safety Car
Joined: Jan 2009
Posts: 3,736
Likes: 56
From: anchorage ak
when you look at the picture the oil filter looks to have a drop of oil on the bottom. could be from when it was installed that the installer didn't take time to wipe it off or the seal on the oil filter is dried up and needs to be replaced. I use grease on the rubber seal when I install an oil filter it won't dry out. Were I was going with this is the shifter cable seems to be in line with the filter, when you put a white rag to the wet spot is it red or brown.
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Thread Starter
Advanced
Joined: Jan 2012
Posts: 96
Likes: 1
From: Prague Europe
Are you positive it is transmission fluid? Trans fluid is red (ideally) From the photo its hard to tell if that is trans fluid or motor oil. Look at your white oil filter in that photo. Is that black dot a drop of oil? If yes, then it could be that as you drive the motor oil is dripping and blowing back and misting that part of the transmission.
Just a thought. might be way wrong but leaks can be deceiving.
Just a thought. might be way wrong but leaks can be deceiving.
Race Director
Joined: Apr 2011
Posts: 11,183
Likes: 3,334
From: North of Toronto - Ontario
Wash everything down real good and wait for it.
That book on the shifter cable will hold a surprising amount of fluid and slowly leak it out also.
The seal on the shifter shaft can be replaced from the outside. There is a tool that pulls the old seal out without damaging (scratching) the shaft.
Check around (google) there should be tons of pages on replacing the seal on a TH400.
Mooser
Here's one right on our forum
http://forums.corvetteforum.com/c3-t...r-linkage.html
That book on the shifter cable will hold a surprising amount of fluid and slowly leak it out also.
The seal on the shifter shaft can be replaced from the outside. There is a tool that pulls the old seal out without damaging (scratching) the shaft.
Check around (google) there should be tons of pages on replacing the seal on a TH400.
Mooser
Here's one right on our forum
http://forums.corvetteforum.com/c3-t...r-linkage.html
Last edited by Mooser; Jan 16, 2013 at 09:16 PM. Reason: added link
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Le Mans Master
Joined: Sep 2004
Posts: 5,116
Likes: 5
From: Livonia MI
Your best bet, is probably putting some UV trace dye in both the engine crankcase and the tranny fluid. You can get the the dye that shows up different colors under the UV trace light. Maybe green for the engine, and orange for the tranny. Also, sometimes when an auto tranny filter plugs, fluid can blow out the vent tube. Had this happen before, and changing out to a good quality name brand filter, solved it.
Thread Starter
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Joined: Jan 2012
Posts: 96
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From: Prague Europe
Tranny leaking - update
Hello guys, after a while I'm back with a little update. Finally I was able to trace the spot from where the trans. fluid was leaking. Can you please check the photo and advise what is needed to fix this? The main leak is at point nr. 1. There are some drops also at point nr. 2 (not sure how those could get there). Thank you.
Last edited by Firebird77; May 23, 2013 at 05:15 AM.
Race Director
Joined: Apr 2011
Posts: 11,183
Likes: 3,334
From: North of Toronto - Ontario
The speedometer gear seal is fairly straightforward
Try to park with the nose of the car downward so you don't loose too much fluid.
There is a seal and an o-ring. Here's some reference info with a pic of the seal
http://forums.corvetteforum.com/c3-t...edo-cable.html
Frequently they install 2 seals instead of 1, I've done it a few times and it works fine.
Mooser
Try to park with the nose of the car downward so you don't loose too much fluid.
There is a seal and an o-ring. Here's some reference info with a pic of the seal
http://forums.corvetteforum.com/c3-t...edo-cable.html
Frequently they install 2 seals instead of 1, I've done it a few times and it works fine.
Mooser