TH350 - Fluid coming from torque converter shield hole - CorvetteForum - Chevrolet Corvette Forum Discussion

Register FAQ Search Today's Posts Mark Forums Read Vendor Directory

C3 Tech/Performance
V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette

TH350 - Fluid coming from torque converter shield hole

Reply
 
 
 
Thread Tools Search this Thread
Old 02-08-2010, 10:43 AM   #1
ixlor8
CF Senior Member
Thread Starter
 
ixlor8's Avatar
 
Member Since: Sep 2007
Posts: 520
Thanks: 0
Thanked 0 Times in 0 Posts
Default TH350 - Fluid coming from torque converter shield hole

I have a couple of drops of transmission fluid coming from the torque converter shield hole.

What is the likely cause of of this small leak? Front Seal? Or torque converter?

If I took it to a shop. What would it cost to replace and repair this? How big of a job is this?

What other things might be done at the same time?
ixlor8 is offline   Reply With Quote
Old 02-08-2010, 11:04 AM   #2
Easy Mike
CF Senior Member
Support Corvetteforum!
Cruise-In II Veteran
 
Easy Mike's Avatar
 
Member Since: Jun 2000
Posts: 33,002
Thanks: 0
Thanked 260 Times in 243 Posts
Default

Quote:
Originally Posted by ixlor8 View Post
...Front Seal?...
Probably.

Quote:
...If I took it to a shop. What would it cost to replace and repair this?...
The tranny has to be dropped in order to get to the seal. Get a couple of estimates.

Easy Mike is online now   Reply With Quote
Old 02-08-2010, 11:13 AM   #3
GPGG70
CF Senior Member
 
GPGG70's Avatar
 
Member Since: Mar 2008
Location: Nixa Missouri
Posts: 1,900
Thanked 0 Times in 0 Posts
Default

Hold on there dont freak out just yet.
My 70 was doing this after I had change the fluid and gasket. What was happening was the transmission pan had a small leak at one of the bolts next to the bellhousing cover and the fluid was spreading or migrating into the bellhousing and dripping out of the weep hole.
I took the car to this so called mechanic and he tried to tell me that the trans pump was shot and he was going to have to pull the transmission. I told him he was out of his f$&king mind and that anybody with little or no brain could see what it was doing. Needless to say in my case I had used a crappy gasket and that was the cause of the leak, and i didnt have it torqued to the correct spec's either.
As far as the mechanic is concerned he lost mine and my family's business.
Hope this helps. It may not be as bad as it look's. Just be carefull who you have look at it.
GPGG70 is offline   Reply With Quote
Old 02-08-2010, 11:24 AM   #4
damoroso
CF Senior Member
 
damoroso's Avatar
 
Member Since: May 2008
Location: Middleburg Florida
Posts: 1,103
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Yep, small leaks in the pan gasket can wick forward and drip down the dust cover. But if you haven't touched any of the pan bolts, it's likely the front seal. You have to pull the trans, then pull the converter straight off, pull the seal and put a new one in. The seal is probably less than $5.00. It really isn't a difficult job, just takes some time. Most of that will probably be in pulling your exhaust back to the cat...
damoroso is offline   Reply With Quote
Old 02-08-2010, 02:01 PM   #5
Red 71
CF Senior Member
 
Red 71's Avatar
 
Member Since: Sep 2002
Location: Melbourne, Fla. 6 months- New Middletown, Ohio 6 months
Posts: 625
Thanks: 0
Thanked 0 Times in 0 Posts
Default

First things first, can you remove the dust cover? If so, you should be able to see if any fluid is running down from the seal. Most likely the seal but as stated prior, "not always" Also, you want to check the pan bolts while you are under there.
Red 71 is offline   Reply With Quote
Old 02-08-2010, 02:07 PM   #6
larryg3
CF Senior Member
Support Corvetteforum!
 
larryg3's Avatar
 
Member Since: Apr 2008
Location: Lindenhurst IL
Posts: 1,789
Thanks: 0
Thanked 6 Times in 6 Posts
Default

Quote:
Originally Posted by GPGG70 View Post
Hold on there dont freak out just yet.
My 70 was doing this after I had change the fluid and gasket. What was happening was the transmission pan had a small leak at one of the bolts next to the bellhousing cover and the fluid was spreading or migrating into the bellhousing and dripping out of the weep hole.
I took the car to this so called mechanic and he tried to tell me that the trans pump was shot and he was going to have to pull the transmission. I told him he was out of his f$&king mind and that anybody with little or no brain could see what it was doing. Needless to say in my case I had used a crappy gasket and that was the cause of the leak, and i didnt have it torqued to the correct spec's either.
As far as the mechanic is concerned he lost mine and my family's business.
Hope this helps. It may not be as bad as it look's. Just be carefull who you have look at it.

my 81 was doing this and after i got a few quote to r and r my trans (1K) i took the dust cover off and found out it was a couple of things 1st it was the pan gasket PO had over tightened the pan bolts. and 2nd the oil filler tube gasket was leaking.

good luck
larryg3 is offline   Reply With Quote
Old 02-08-2010, 03:58 PM   #7
ixlor8
CF Senior Member
Thread Starter
 
ixlor8's Avatar
 
Member Since: Sep 2007
Posts: 520
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by larryg3 View Post

my 81 was doing this and after i got a few quote to r and r my trans (1K) i took the dust cover off and found out it was a couple of things 1st it was the pan gasket PO had over tightened the pan bolts. and 2nd the oil filler tube gasket was leaking.

good luck
I know that the fluid we recently changed, before I got the car. I will check out. Thanks for all the help/
ixlor8 is offline   Reply With Quote
Go Back   CorvetteForum - Chevrolet Corvette Forum Discussion >
Reload this Page
  • TH350 - Fluid coming from torque converter shield hole
  •  
     
    Reply

    Related Topics
    Thread Thread Starter Forum Replies Last Post
    Oil Leak on Flywheel Cover jverble C4 General Discussion 2 08-19-2011 11:34 AM
    Rattle in torque tube??? Anyone experience this? Wildlife4u C6 Corvette General Discussion 6 05-09-2011 02:20 PM
    Help me find source of transmission leak Aussie79 C3 Tech/Performance 6 03-21-2011 10:24 PM
    fluid capacity of the TH350 tranny tatersalad C3 Tech/Performance 3 10-18-2004 10:39 AM
    3.42/ YANK ST3500/COOLER PART 2 MikeV C5 Tech 7 02-12-2004 09:19 PM


    Tags
    1981, bell, coming, converter, corvette, dust, fluid, housing, leaking, rules, shields, specs, th350, torque, trans

    Thread Tools Search this Thread
    Search this Thread:

    Click for Advanced Search

    Posting Rules
    You may not post new threads
    You may not post replies
    You may not post attachments
    You may not edit your posts

    BB code is On
    Smilies are On
    [IMG] code is On
    HTML code is Off
    Trackbacks are Off
    Pingbacks are Off
    Refbacks are Off

    Forum Jump


    All times are GMT -4. The time now is 11:12 AM.