[NissanTech]

I did what 37L1 did except I ran my tube by the metal brake line on the frame.I then siliconed the heck out of the firewall on the outside and inside. I have checked the flow of water since and I have a LOT of water draining now.Will keep an eye on it and post follow up's

 

[surge]

Technically Challenged

I want to do this mod as well.
But how do you get to it? I have read that you do this from the top.
But with the hood open, it seems too far/narrow to reach down there.
I have crawled underneath, and I can't see anything.
What am I missing?

Thanks for your patience/help.

Surge :eh:

 

[smoketitan]

whoa looks like I am off to home depot this weekend----thx guys

 

[Orlando Titan]

Surge.
From the top left hand side next to the fuse boxes. It is tight, but you can do it . I will post some pics tomorrow if that will help.

 

[NissanTech]

it is a far reach.I had a step stool handy.When you reach in it's had to see what you are doing to,my silicone job is not a prettt as a I would like but as long as it doesn't leak.I also got to it from the bottom to apply it all the way around.I then went inside and felt where it goes through firewall and I felt silicone all around it.I will wait a few days and let it dry and apply it where needed. I have a ton of water draining now.

 

[p905]

Where did you take the photo from of the tube with the hose clamp? Is that inside or is it outside the firewall

 

[p905]

I am glad to see Nissan redisigned the part, but it does suc* that they are not informing us poor smucks that bought ours early
I appreciatte your contribution to the board.
Guy

When was this "redesigned" ? Is there a MFR date?

 

[zpylot]

When was this "redesigned" ? Is there a MFR date?

I asked this same question back on page 3 but nobody answered. OrlandoTitan, what were you talking about?

 

[smoketitan]

Surge.
From the top left hand side next to the fuse boxes. It is tight, but you can do it . I will post some pics tomorrow if that will help.

please bro I would love the pics--as I am going to do this this weekend

 

[1Titan]

This black conduit is that bestatchess is talking about is acutually a grommet that redirects the water to a specified area. The reason that you guys are not seeing it when you are doing your "tube extension" modification is because it fell off during transit. First of all, all of the trucks are delivered with it, but they fit like crap. I noticed this when I went to locate my problem originally. I had to push the piece out from inside of the truck. It fell out with almost no resistance. When I went to put it back in place, it is really loose inside of the hole. It really is a good idea to have this grommet in place because of the purpose it serves.
Also, Bestatchess, this part will not keep water from entering the cab at all. When it is installed, it is not form fitting around the nipple that exits the truck, so the water can easily stip drip back into the cab if the nipple is not properly angled. That is exactly what originally happened on mine. Now that it is fixed, I had them reinstall the grommet with a small dab of silicone.

So VShortt you did not have the plastic outlet bib (boot) but just a stubout. So then the stubout obviously goes in to the plastic outlet bib and then drains out of the bib? I do not have the leakage as of yet and may wait until I do before adapting it to what is being done here. I'm assuming at the other end of the plastic outlet bib is a rectangular shaped opening that allows drainage right below the eye for the screw.

 

[1Titan]

After reading all this scary stuff, I figured I would do some pre-emptive mods to this condensation water problem. No way I want to go tthrough what VShortt did!

1. 2' piece of 1/2" tubing

2. 1 hose clamp for attaching tube to condensation run off.

3. another clamp for opposite tube end

4. silicon seal

Took grommet/boot off of firewall, there is also a plastic push clip that holds it at the drain end, removed that too, took grommet and added it to my Nissan parts collection.

Connected 2' tube to firewall and ran it down, back and through frame rail through existing holes. That way water falls only on ground and not on anything else.

Put 1/2" clamp on tube end to prevent tube from backing out of location and to keep slight tension on the tube. Zip-tied the tube near firewall to keep tube from bending and kinking near fire wall.

All that is left to do is to silcone seal the firewall where the condensation tube exits.

Thought about running the tube through the boot but the grommet attachment to the firewall is a weakeness in this design. The grommet is too soft to make a real tight and sturdy fit and is likely to come off. figured I'd seal up the grommmet hole in firewall to prevent any moisture from entering and then won't have to worry about anything loosening or falling off later.

Photos of the project. . . .

37L1

37L1 - I see you did this as a premptive measure I guess I should as well. I have been looking for drainage and it is minimal I think I should be seeing way more drainage, however I don't seem to see any evidence of leakage in the cab. My plastic outlet bib which you are calling the boot seems in place well enough. I wanted to ask you since you took it off and have it stored. Obviously the drainage end which is the other side of that boot below the eye for the screw has a rectangular opening for drainage? Sorry for the stupid question it's just that you can't really see it when in place and the design looks somewhat strange.

 

[VShortt]

So VShortt you did not have the plastic outlet bib (boot) but just a stubout. So then the stubout obviously goes in to the plastic outlet bib and then drains out of the bib? I do not have the leakage as of yet and may wait until I do before adapting it to what is being done here. I'm assuming at the other end of the plastic outlet bib is a rectangular shaped opening that allows drainage right below the eye for the screw.

Yes I did/do have this "bib". The problem is that the stubout is only about 5/8" OD and the the "bib" is about 1 1/2" OD. The difference in the size of the two still allowed water to run backward and enter the cabin. The water never actually made contact with the bib. I will try to draw it in section thru the firewall so that you understand it better. Give me a few minutes.

 

[VShortt]

Yes I did/do have this "bib". The problem is that the stubout is only about 5/8" OD and the the "bib" is about 1 1/2" OD. The difference in the size of the two still allowed water to run backward and enter the cabin. The water never actually made contact with the bib. I will try to draw it in section thru the firewall so that you understand it better. Give me a few minutes.

Here is an illustration of the problem that I was having. This should make perfect sense...I hope.

 

[Orlando Titan]

This should help ya
http://www.titantalk.com/showthread.php?t=12802

 

[1Titan]

Here is an illustration of the problem that I was having. This should make perfect sense...I hope.

VShortt- That is a totally awesome explanation and drawing! I understand exactly what you are describing and how leakage is occurring. I kept reading this thread and looking at the design of the outlet bib and trying to figure why it would leak. Of course the outlet not matching in size to the diameter of the bib would be the reason. When I was looking at it I was thinking that the diameter of the outlet stubout would be nearly identical in diameter to the plastic outlet bib resulting in a sufficient seal but according to your drawing that's definitely not the case!- I will be doing this mod. this weekend. -Thanks

 

[4THE1]

As I stated earier in this thread, there is more than just the water flowing back along the bottom of the outlet. The rubber boot that goes over the AC outlet is not set below the firewall opening and the water travels up and over the lower lip of the boot/firewall opening into the cab. This occurs with forward momentum (highway speed). See my very crude hand drawings.

<edit - added paragraph>
VShortt, I must apologize! I was not trying to steal your explanation and drawings, but I just thought others should know that there are several issues. I don't want someone trying what I did. I tried just extending the outlet and putting the boot back over. That is when I found out that it is not just the water rolling back along the bottom of the outlet. The only fix is the one being suggested and that is to do away with the boot and run a hose out to where you want it to drain. Then seal up the firewall with sealant or something.

 

[37L1]

37L1 - I see you did this as a premptive measure I guess I should as well. I have been looking for drainage and it is minimal I think I should be seeing way more drainage, however I don't seem to see any evidence of leakage in the cab. My plastic outlet bib which you are calling the boot seems in place well enough. I wanted to ask you since you took it off and have it stored. Obviously the drainage end which is the other side of that boot below the eye for the screw has a rectangular opening for drainage? Sorry for the stupid question it's just that you can't really see it when in place and the design looks somewhat strange.

You got it correct. The drainage portion of the "boot/grommet" is the rectangular portion near the hole for the retaining push-pin, it is not a screw.

This grommet/boot comes off easily if you gently pull on it at the firewall. It is not real easy to put back on and once it is off I have very little confidence in it staying on without securing it with silicone seal as it is a very soft and flexible material.

 

[37L1]

Where did you take the photo from of the tube with the hose clamp? Is that inside or is it outside the firewall

Outside the firewall in the engine compartment.

 

[1Titan]

As I stated earier in this thread, there is more than just the water flowing back along the bottom of the outlet. The rubber boot that goes over the AC outlet is not set below the firewall opening and the water travels up and over the lower lip of the boot/firewall opening into the cab. This occurs with forward momentum (highway speed). See my very crude hand drawings.

Excellent! Thanks for that. Looks like everyone should perform this fix as VShortt suggested earlier. Thanks again guys!

 

[p905]

Here is an illustration of the problem that I was having. This should make perfect sense...I hope.

VShortt...Thanks a million. This hopefully will help me find out if I 'm having this problem or not. I haven't detected any water yet but now I know where to look.