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Waterproofing Np435

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Old Dec 8, 2007 | 12:26 PM
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78250crewcab4x4's Avatar
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Waterproofing Np435

How do I waterproof my NP435? does anyone make a boot that goes over the shifter handle and then the top of the trans cover? Is it that much of an issue? I just figured that while it was out of the truck i'd try to do something for it.

I am assuming that it vents around the shifter?

Thanks!
 
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Old Dec 8, 2007 | 12:42 PM
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hey fellow crewcab guy! If you're into water deep enough to get in around the tower chances are the crankcase will be full of water first, if its still a concern use a piece of bicycle inner tube, stretch it over the tower and clamp it over the stick, don't forget to extend the vent on the t-case as well
 
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Old Dec 8, 2007 | 03:10 PM
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From: New Gretna, New Jersey
The only time I ever got water in mine was when I was up to the headlights in it. In my case it seems that the tower is the weak point for water intrusion. I'm gonna try to rig up some kind of rubber boot like crewcab said.
 
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Old Dec 8, 2007 | 05:12 PM
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Originally Posted by 1EVILCREWCAB
hey fellow crewcab guy! If you're into water deep enough to get in around the tower chances are the crankcase will be full of water first, if its still a concern use a piece of bicycle inner tube, stretch it over the tower and clamp it over the stick, don't forget to extend the vent on the t-case as well
that's an awesome idea, Thanks, yeah I planned to run the tcase vent up high.

Oh will I have to vent the tranny so it can still breathe?
 
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Old Dec 9, 2007 | 01:03 PM
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From: ontario canada
wouldn't hurt, if it does build pressure it will puke oil around the input shaft onto the clutch, drill and tap a 1/8 npt hole in the shift tower and use a barb fitting with a hunk of hose
 
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Old Dec 10, 2007 | 03:34 PM
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so you are saying drill into the shift tower? or would another location work?
 
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Old Dec 13, 2007 | 02:46 AM
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Anywhere above oil level would work, but it's just easiest to do it in the top cover.

Justin
 
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Old Dec 13, 2007 | 07:38 PM
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So I figured out how to do it, use the bicycle inner tube to seal it off, like evilcrewcab was saying, but use the section with the valve stem in it, remove the valve core and hook a hose up to it, I'm hoping to get it in by this weekend
 
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Old Dec 14, 2007 | 05:13 PM
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"Air" would induce moisture in to it. You need to think nitrogen. It would be a cool idea if you could make it work.
 
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Old Dec 14, 2007 | 05:20 PM
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Originally Posted by Green Ford
"Air" would induce moisture in to it. You need to think nitrogen. It would be a cool idea if you could make it work.
i'm pretty sure you meant this response for the guys other waterproofing thread, but I'll respond here anyway.

The axle vents to air normally and maintaining a low pressure on the housing with air would introduce no more moisture than driving down the street.

Justin
 
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Old Dec 18, 2007 | 09:18 PM
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Here is how I ended up doing it, I was in water up to the turn signal lights today, But I haven't had a chance to check for water intrusion.
 
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Old Dec 19, 2007 | 07:14 PM
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if you were wanting to vent the trans, maybe take out the top level fluid check plug out and find a fitting with a barbed fitting on it. technically the fluid wouldnt be higher than that unless you leaned over extremely to that side, but you would eventually go back the other way and it would vent. But that is only if someone is worried about drilling into the trans and getting burrs or shavings inside.
 
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Old Dec 19, 2007 | 07:24 PM
  #13  
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The cool thing about this is it seals it and allows you to vent it at the same time. All you have to do is pull the shifter boot to do it
 
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Old Dec 19, 2007 | 09:41 PM
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i used a c/v joint boot over mine not because of water but to keep the 90 wt stinko smell out of the cab.
 
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