Leaky trans dip stick tube fix... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

68jimmy · 08-25-2004, 04:46 PM

For my fresh TH350 trans I had to purchase one of the aftermarket chrome dip stick tubes and it has been nothing but a hassle. I constantly have a leak of sorts from the base where it goes into the trans. I have checked and replaced the rubber o-ring, adjusted the mounting bracket to insure it was straight into the hole, but still it leaks. Is there some fix out there? Should I just try and locate a factory tube?

thanks!

BtnkBndt · 08-25-2004, 05:04 PM

I had the same problem with my T400. My factory tube was slightly bent and didn't fit perfectly, it was at a bit of an angle. Dealership had them in stock 15 bucks with o-ring. You have to get someone that will look in the books.

grayw0lf · 08-25-2004, 05:22 PM

It is a horrible pain! My dipstick was too big to fit in the hole w/ an o-ring on it. It took some serious creativity.

If you have an o-ring & still leaks, then you need a rubber skirt. They are in the Help! section at most auto parts stores. Even if the salespersons say they do not have them, look anyways.

superfly68 · 08-25-2004, 07:49 PM

went throught this mess for month's. ended up getting some COPPER plus sealant and cleaned the area and "gooped" it all over it! let it sit over a weekend to dry and it was sealed. not the prettiest seal in the market but it worked.

CHEVYE · 08-25-2004, 08:11 PM

just had to do the same as superfly68. not the prettiest but it works.

gonebad2 · 08-25-2004, 10:45 PM

I am compltely sold on Lokar dipstick tubes. I have never had on leak yet.

Robert1970C20rstbukt · 08-25-2004, 10:58 PM

When I put the dipstick tube back in mine I used a new o ring and coated it with black silicone, hadn't leaked yet.

08-25-2004, 04:46 PM	#1
68jimmy Registered User Join Date: Dec 2003 Location: albuquerque Posts: 431	Leaky trans dip stick tube fix... For my fresh TH350 trans I had to purchase one of the aftermarket chrome dip stick tubes and it has been nothing but a hassle. I constantly have a leak of sorts from the base where it goes into the trans. I have checked and replaced the rubber o-ring, adjusted the mounting bracket to insure it was straight into the hole, but still it leaks. Is there some fix out there? Should I just try and locate a factory tube? thanks!

08-25-2004, 05:04 PM	#2
BtnkBndt Pennyless Fool Join Date: Oct 2003 Location: Forney,Tx Posts: 439	I had the same problem with my T400. My factory tube was slightly bent and didn't fit perfectly, it was at a bit of an angle. Dealership had them in stock 15 bucks with o-ring. You have to get someone that will look in the books. __________________ "Who owns this car with the peace sign, the mag wheels, and four on the floor?" 67 Short Step 283/TH400/4.11

08-25-2004, 05:22 PM	#3
grayw0lf Registered User Join Date: Apr 2004 Location: Clanton, AL Posts: 1,253	It is a horrible pain! My dipstick was too big to fit in the hole w/ an o-ring on it. It took some serious creativity. If you have an o-ring & still leaks, then you need a rubber skirt. They are in the Help! section at most auto parts stores. Even if the salespersons say they do not have them, look anyways. __________________ 85' CUCV M1009!!! The newest addition! 6.2diesel, Th400, NP208, & only 36k miles! 70' C-10 LWB Fleetside - Looking good these days! 05' Dodge Neon 88' Winner Escape Sport 1750 - 4.3v6 94' Seadoo SP 84' Honda TRX200, bare nekkid. Just a frame & tires. Always looking for another project or any good deal!

08-25-2004, 07:49 PM	#4
superfly68 Registered User Join Date: Dec 2003 Location: Encinitas,CA Posts: 316	went throught this mess for month's. ended up getting some COPPER plus sealant and cleaned the area and "gooped" it all over it! let it sit over a weekend to dry and it was sealed. not the prettiest seal in the market but it worked. __________________ no longer have a ride, but still a fan!

08-25-2004, 08:11 PM	#5
CHEVYE my gas saver Join Date: Sep 2003 Location: Clarksville, TN Posts: 2,046	just had to do the same as superfly68. not the prettiest but it works. __________________ 85' SWB, 4.3/TH350, getting ready for paint 84`SWB, 462ci./TH400, cowl hood, 15" billet spec., flows, blazer buckets/console, flat black 71`SWB, project ebay feedback

08-25-2004, 10:45 PM	#6
gonebad2 Merciless Butcher Join Date: Oct 2003 Location: CC Nevada Posts: 1,447	I am compltely sold on Lokar dipstick tubes. I have never had on leak yet. __________________ Your Bought And Sold....I Got Your Soul!

08-25-2004, 10:58 PM	#7
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	When I put the dipstick tube back in mine I used a new o ring and coated it with black silicone, hadn't leaked yet. __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck



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