SIGNS OF WATER STAINS AROUND OR BELOW THE WINDOWS?

 
Post new topic   Reply to topic    Bushtracker Forum Forum Index -> Tips On Buying SECOND HAND BUSHTRACKERS
View previous topic :: View next topic  
Author Message
Bushtracker
Site Admin


Joined: 12 Jul 2007
Posts: 5033
Location: Kunda Park
State:: Queensland
Current Bushtracker owner:: Yes
PostPosted: Mon Apr 04, 2016 8:28 am    Post subject: SIGNS OF WATER STAINS AROUND OR BELOW THE WINDOWS? Reply with quote

For those buying older vans, here is the problem if you see stains around or below the windows..

This is really for the older style Camec windows, and signs of water stains or damage below the windows is a Maintenance issue, or should I say LACK of maintenance issue.. This really only relates to vans before about 2008, since then we have a double glazed Euro window with a huge O-ring seal and double dog down handles.. It is still possible to see water stains, the window can be defective, or left open in the rain, but it is very rare in comparison.

This is the maintenance required to stop the leaks: On the windows, it is a tough problem because there are too may causes, and please take note that all of them are different to each other. Even in their time ten years ago, we would see one in twenty to one in fifty vans that end up with a leak In the front window or maybe one in twenty that end up with one in a side window.... Sad Here are the common categories:

If the van is stationary and the leak shows up: There are a number of causes, but one is if the van is left parked with the front end up, the angle of the bottom sill on the window can let the water come into the van instead of draining back out of the slit drains on the outside front. The frame can fill with water and run inside instead. Evil or Very Mad

For both front and side windows: Then there are a variety of other things that can contribute, like the winder boxes drain hole plugging up. You can find that out by winding the window all the way open and there is a little hole in the outside face of the winder box that lets the water out into the frame, as the water seeps in down the hinge point into the winder box itself.... The grease in the winder box will pack up that drain hole in maybe 1 in 100 vans. Sad Or it can get blocked up with dust for instance..

There are a couple of other potential leak points on the window, whether in the front or side windows, like around the hinge point, or if the rubber seal is creased or folded over.... This might be why it might not show up on water testing, is that if the van nose was down and the leak ran out of the front slits in the rubber seal the way it was supposed to, and then sometimes it shows up when the van nose is up, and it leaks out into the van onto the mattress, or dripped from the winder boxes if their drain holes are plugged up. Also check that the two stage lock is actually on the tighter second stage and the rubber seal on the window is not creased or folded and the second stage of the lock has sucked it down tight.

If in the case of a front window...The van leaks when traveling it is different again! Now the main culprit seems to be the aerodynamics of the tow vehicle itself in most cases. Some tow vehicles seem to create an updraft of air at the bottom edge of the window that forces the water to back up inside the frame instead of running out… We fix most of those with a “J” mould in alloy along the bottom of the window to break up that air flow… We are also working on a new stone guard window cover in development, that will break up that air pressure.

If all else fails, we have invented a 50mm x 25mm angle that rivets on the outside window shade stoneguard bottom, with a piece of hatch pinchweld on the bottom of the angle so it seals against the cladding on the front when the stoneguard is closed. That has worked on the hard ones... Where the aerodynamics of the tow vehicle dammed up the water from coming out the drains at the bottom..

Also with air pressure or even on a side window: Another Culprit is the hinge cover “link block” on the outside of the window, (a small black triangular cover), can have the hinge pin leak through the rivets or the gasket underneath… A little smear of silicone is the fix in that case.


HERE IS THE MOST COMMON LEAK SPOTS, ON BOTH FRONT AND SIDE WINDOWS, AND THE FIX:
From new up near the end of the hinge point at the top of the window, Camec the builder puts a little silicone across a 2mm gap where the vertical part of the frame hits the hinge point, about 20 mm in from each side.. In time, this may prove to not be enough sealant at that point, or it wears away with flexing and use... Here is a picture of the spot:



And if it leaks this is a fix you can do: First of all, on that top edge of about 20 mm in from the edge of the opening part of the window, you will see the gap with some silicone on it, on the outer widow frame... It starts about 20 mm in from the edge of the fixed window frame, and runs about 20 mm along the opening part of the window frame. You will have to clean out that gap with a small screw driver and get all the old silicone out of it... Cleaned out it looks like this:




Then: Wind the window open all the way, and put a small bit of Silicone up under the edge of the window at the hinge point for that 20mm gap. Then close the window down and let it cure for a couple of days... What happens is that the way the window is designed, where the vertical part of the frame of the opening part of the window, hits the hinge point, there is a 2mm gap for about 20 mm in from the edge of that outer window frame. They silicone that gap on the outside from new. But it can wear away from use... Anyway, you open the window up all the way, and put a small bead of silicone for about 20mm in from the edge up at the top of the window, as close to the hinge point as you can get. Then you close the window down and let it cure for a couple of days to let it cure..




On the outer part, where you have cleaned it off, and scraped off the old silicone on the outside of that 20 mm gap at the top of the vertical frame part, you re-apply some silicone there as well along that gap... And when finished the window can be re-opened after a couple of days, and the silicone has cured; and the outside bead of silicone looks like this:



Yes this is a pain, and one in 50 windows will leak, but they are still the best windows we can find. So, this is the fix...


As last resort, if none of these fixes worked.... It could be a dry screw. Now this could be from it working loose or movement or flexing, or maybe even our fault Shocked with not enough Sika on it, but that is rare as we bed the whole window in Sika-Flex.. But anyway, as last resort, you can take out all the screws, dip them in white Sika-Flex and put them back in. And then immediately clean up the area with Turps...

Look, the plain truth is that sealing an opening window in hurricane force wind in pouring rain is a problem with many causes and many fixes, depending on just where the leak develops.. That is why some companies do not even offer the opening window in the front.. We think we would rather deal with the problems, but note: We do the best we can...

Kind Regards,
The "lost or last or lone... Ranger"
Semper Fidelis
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Bushtracker Forum Forum Index -> Tips On Buying SECOND HAND BUSHTRACKERS All times are GMT + 10 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum