Author Topic: Transmission leak question :-)  (Read 9627 times)

Offline ladyharley

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Transmission leak question :-)
« on: March 26, 2012, 11:39:25 AM »
Since you guys are so great helping me in my other post... /leak.jpg[/img]]  :-)..........  I had the transmission fixed on the 1979 Chevy P/U.  I believe it's a 350 Turbo.  Everything was fine until there is a small leak.  It's not at the pan.  I'm inserting the pic of where the "drip" is.  It a bolt at the corner. You can see the red drip about to drop.  Is this an easy fix with a new bolt or is there a way to seal it with something?  Everything else seems good.   Picture is at     http://i120.photobucket.com/albums/o184/ladyharley05


Thanks again..

Offline ehjorten

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Re: Transmission leak question :-)
« Reply #1 on: March 26, 2012, 01:40:42 PM »
Link no workie for me.
-Erik-
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Online bd

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Re: Transmission leak question :-)
« Reply #2 on: March 26, 2012, 02:13:32 PM »
The link has an error.  Nonetheless, the bolts in the image thread into blind (dry) holes.  If it's not the pan gasket, fluid may be leaking from the front pump area (input seal/retaining bolt gaskets/pump o-ring) past the inspection cover then dripping off the bolt (the lowest point).
Rich
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Offline ladyharley

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Re: Transmission leak question :-)
« Reply #3 on: March 26, 2012, 02:36:41 PM »
  how about this?

Offline heavychevy91

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Re: Transmission leak question :-)
« Reply #4 on: March 26, 2012, 05:18:52 PM »
Is it maybe the lower trans cooler line?

Offline ladyharley

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Re: Transmission leak question :-)
« Reply #5 on: March 26, 2012, 05:35:14 PM »
The bolt?  That's where it's dripping from that top little bolt

Online bd

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Re: Transmission leak question :-)
« Reply #6 on: March 26, 2012, 07:14:51 PM »
That bolt isn't leaking.  The fluid is migrating from somewhere else.
Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline Blazin

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Re: Transmission leak question :-)
« Reply #7 on: March 26, 2012, 09:59:12 PM »
I would check the dip stick tube gromet.
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Offline bake74

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Re: Transmission leak question :-)
« Reply #8 on: March 27, 2012, 05:44:41 AM »
     I would check all the bolts for the trans pan gasket, they have a tendency to loosen up.  It appears the fluid is coming from the gasket area to the left of the said bolt, you can see red fluid along the seam where the gasket is.
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Offline ehjorten

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Re: Transmission leak question :-)
« Reply #9 on: March 27, 2012, 08:49:38 AM »
It can be very difficult to diagnose a leak like that, especially if you are driving it and then notice it.  transmission fluid could be coming from the front pump area and the act of driving it causes it to flow downwind.  for example, you might see transmission fluid at the back of the transmission from a leak at the front of the transmission simply because airflow is causing it to trail back there.

I would clean the area very thoroughly and see if you can notice the leak without driving it anywhere.
-Erik-
1991 V3500 - Gen V TBI 454, 4L80E, NP205, 14 bolt FF, D60, 8" Lift on 35s
1977 K20 Silverado - 350, THM350, NP203, 14 bolt FF, D44, Stock Lift on 31s
1969 Chevelle Malibu Sport Coupe - EFI350, THM350
1968 Chevrolet Step-side Pickup - 300HP L6

Offline ladyharley

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Re: Transmission leak question :-)
« Reply #10 on: March 27, 2012, 09:29:59 AM »
Thanks for all the good suggestions.   He put everything back together, so that's why I'm confused.  I did notice the bolts to the pan loose when I got home and I tightened them, but that didn't seem to stop the leak.  I think he used the gasket from before, which is only a few months old.  I'm hoping that is it, I can change the pan gasket myself.  But you're right ehjorten, I should try and wash the area (can't drive it like this) and see maybe where it's coming from.

Thanks!!!

Offline Lt.Del

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Re: Transmission leak question :-)
« Reply #11 on: March 27, 2012, 12:22:20 PM »
so the pan gasket is reused?  I never recycle a gasket.  Once compressed, it's, um, compressed.

Offline ladyharley

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Re: Transmission leak question :-)
« Reply #12 on: March 27, 2012, 12:47:55 PM »
Yes it was reused    :-\.  He didn't buy a new one.  So keeping my fingers crossed that is the problem and it will be resolved.  I will go get a new one and replace it.   

Thank you..

Offline Blazin

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Re: Transmission leak question :-)
« Reply #13 on: March 27, 2012, 10:40:18 PM »
There are reuseable gaskets available, But all the aftermarket ones I have seen are a light blue color. The OEM Ford transmission pan ones are black.
Some people are like Slinkies. Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs