transmission line replacement....

[Bhale]

I've heard/read that there are problems with the transmission lines on some of the atuomatics. How can i tell if i have the lines that are causing trouble? I'll be getting a new transmission in the next few weeks and some HP upgrades at the same time and the increase in line pressure has me wondering.....



Date of MFG 3/96



Thanks!

Brian

 

[Extreme1]

The line pressure isn't as big a problem as the heat and vibration are. If your lines have plastic ends at the trans connection and at the engine mounted cooler, you have the lines that were updated. The first generation of this assembly had a steel clip retaining the line into the fitting. The second generation had a plastic clip that had to be crushed with a pliers to remove. The latest (and probably last) updates the lines to inverted flair fittings like the new trucks.



While you're at it, purchase the '94-95 line from the trans to the engine mounted cooler. It has a port for a temp sender. I've had my sender in all the places suggested and the trans line out is the best place.



If you do buy this line, there is a anti drain back valve in the end near the cooler. I recommend removing it as it reduces cooler flow.

 

[Bhale]

THANKS!!



I'll look at the lines as soon as the weather clears up. (I hate rain ) If i have the plastic clips should leave them be or still get a new set. I'm hearing it'll cost ~$300-$350 for the kit plus ~$100 for installation.

 

[HoleshotHolset]

I redid all of my lines with 1/2" 4000+psi rated hydraulic hose and swedged on fittings... . I used JIC fittings that way I can easily take stuff apart. The lines can be made to order at any place that does hoses for hydraulic systems like tractors, etc.....



Bring in your old stuff to get the lengths right and to get all the right fittings.



Whole setup cost me like $80... soup to nuts.



When replacing the rubber hose @ the cooler just behind the bumper..... the stuff is 1/2" and it's a bit tough to find... Gates sells it and it's like $12 for 3' - which is enough to do two trucks.



HTH,

Matt

 

[Joe G.]

Bhale,



There are two styles of plastic fittings. The first one has a wire clip to retain the cooler line. The second does not. Both kinds are crap.



I replaced mine with the second kind when they failed. Within six months they were leaking too.



I then installed compression fittings with the idea that when they started giving me trouble I would replace the whole setup with hydraulic hose. That was over 120K miles ago. The compression fittings are still working fine. There is a metal ridge on the stock pipe that much be cut off for the compression fittings. If you do it that way then make sure that the cut off ends are deburred well. There are a total of four fittings. All are 1/2" compression. The two in the trans are 1/4" NPT and the two in the cooler under the exhaust manifold are the next size smaller. The two in the cooler are kind of a PITA, but not too bad.

 

[HoleshotHolset]

it wouldn't be too tough to do double-flared 1/2" fittings either... . something to think about.....

All you need is a flaring kit and some fittings.....



Matt

 

[WHardy]

Hey guys, just slid out from under the truck, sizing up the 95 style transmission line I just picked up this AM. The fitting on the side of the transmission apears to be incompatable with the male swedgelock type fitting on the new line??? What am I missing and are their any percautions that need to be taken when removing the line. How do you remove these lines?? I have a 96 model

Wayne

 

[HoleshotHolset]

The fittings that go into the transmission are 1/4" NPT male... . and the other side of the fittings are whatever their trademarked name is... .



Hope this helps...



Matt