Draker Posted January 21, 2012 Report Share Posted January 21, 2012 I've got the interior ripped out of the 720. I noticed a few wet spots when I was pulling the carpet out and so I started to do some leak checks. Found a steady stream from the blower motor. I removed the blower motor and I can see it looks like it's coming in from the vents in front of the windshield. I've got the vents off from the lower part of the windshield but I don't see anything standing out at me. I'm going to dig in deeper.. Are there drains that might be plugged? I can't see anything at this point. Any information here would be helpful. Thanks. Quote Link to comment
love_my_gt Posted January 22, 2012 Report Share Posted January 22, 2012 IS it just water or is there any coolant in it? If there is coolant in it, i dont know where it is on these trucks, but i'd check your core.... Quote Link to comment
ggzilla Posted January 22, 2012 Report Share Posted January 22, 2012 On a 720, the blower motor isn't anywhere near the heater core and the duct to it is above the level of the core. So no worries there. Look in your factory service manual in the heating & ventilation section. Your firewall/cowl sheet metal may be rusted and letting rain water in. Normally it runs out drain holes, but if those get blocked eventually it rusts out. Quote Link to comment
Skulptr Posted January 22, 2012 Report Share Posted January 22, 2012 Check the gasket at the bottom corner of the windshield. Thats where mine was coming from. Just old and dry. Quote Link to comment
Draker Posted January 22, 2012 Author Report Share Posted January 22, 2012 I got a good look in there.. cleaned out a TON of pine needles and a rat nest. The vent is a bit rusted where the it enters the cab and blower motors assembly. I can't tell if it's rusted through, but it's pretty rusted. I found the drains were completely plugged. My plan is to get some silicone and seal everything I can. Not sure what I should do about the rust. What should I do to try and seal it up? Quote Link to comment
ggzilla Posted January 22, 2012 Report Share Posted January 22, 2012 I would remove the blower motor to get to it. If the holes are small, and after cleaning treat the metal with rust sealer (POR15 or other). Then smooth a bit of bondo/filler, then after curing spray paint it. If the holes are big, best to weld in new metal. Quote Link to comment
datzenmike Posted January 22, 2012 Report Share Posted January 22, 2012 It's likely fine now. If the vents ate plugged or restricted the water will back up and on corners can slop over the lip and into the blower air entrance. If there are pine needles and maple keys in there as well it will act like a wick and pretty much do the same thing. Get some fiberglass fly screen and double side tape it to the undersides of the cowl under the open louvers to keep them out. Quote Link to comment
Draker Posted January 22, 2012 Author Report Share Posted January 22, 2012 If there are any holes they are very small. I'm going to track down some POR15, is there a place I can find it locally? Quote Link to comment
ggzilla Posted January 22, 2012 Report Share Posted January 22, 2012 http://www.summitracing.com/search/Department/Paints-Finishing/Brand/POR-15/ Quote Link to comment
Draker Posted January 22, 2012 Author Report Share Posted January 22, 2012 http://www.summitrac...g/Brand/POR-15/ I'm going to call around Eugene to see if I can find it locally, if not then I'll get it online. Quote Link to comment
trentos Posted January 27, 2012 Report Share Posted January 27, 2012 on the odd ocassion i get water in the cab, never thought to look there. i normally just park under shelter Quote Link to comment
Draker Posted January 27, 2012 Author Report Share Posted January 27, 2012 on the odd ocassion i get water in the cab, never thought to look there. i normally just park under shelter Yeah, it's not a ton of water, enough to get things rusting. I'm waiting for some dry weather so I can get this thing patched up. Quote Link to comment
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