When leak testing and leak repairing your coach it is imperative that the
coach is leveled. Any slope at all will change the water flow of the leak
once it enters the coach making it much more challenging to locate the
point of entry. A tilted coach will also have problem water entry points
which will not leak or only leak a little when the coach is flat and vice
versa. You will find once you are “done” fixing your leaks that different
parking slopes and angles will expose “new” leaks. If you can make your
coach practically water tight in the level condition then you only need to
make sure your coach is stored level to have the best water exclusion when
parked unused.
STAY AWAY FROM SILICONE
if you ever plan on painting the area you are sealing.
Sully
Bellevue wa.
On Sat, Apr 25, 2020 at 9:22 AM Stu Rasmussen via Gmclist <
> Jim, I'm not finding 3M 5300 sealant - can you check that is the correct
> number? Several other 5300 numbered items but no sealant.
>
> I'd like to get some based on your experience / recommendation instead
> of making my own mistakes.
>
> Thanks!
>
> Stu
>
> > Just one more thing that I thought of:
> > The moulding that joins the ROOF AND SIDES TOGETHER has removable end
> > seals? on the fore and aft ends of the mouldings. They have a custom made
> > rubber or neoprene piece inside that is supposed to seal the ends of the
> > extrusion. They are 40 + years old, not bad for humans, but way, way, old
> > for rubber parts. My coach leaked there on all 4 corners, but the drip
> rail
> > moulding did not leak along the entire length of the coach. Under those
> > drip rails, the factory used a black, NASTY, non hardening, gooey
> > substance that really works well. But, the end pieces are the weak link
> in
> > the chain. I removed the end covers and resealed them in a bed of 3M 5300
> > non-hardening flexible sealant, black in color. It is almost as nasty to
> > work with as what the factory used under the drip rails. But, it did the
> > trick for me.
> > Jim Hupy
> > Salem, Oregon
> >
> > On Sat, Apr 25, 2020, 7:53 AM Charles Boyd via Gmclist <
> >
> >> Sir, I believe that belt line piece is 2 pieces. It is a body line
> >> junction for the aluminum and the SMC till it gets to the front cap
> which
> >> is all
> >> SMC. There is an added piece of aluminum that extends the 2” wide joint
> >> and is removable by drilling out the rivets. Your leak is probably at
> the
> >> joint.
> >>
> >>
> >>
> >>
> >>> Just a quick update. I pulled the belt line molding off, got in the the
> >> crack on the extrusion with a brush and a pick ) which I later switched
> >>> out for an exacto knife) and dug out as much crud as I could. Most
> spots
> >> were tight to the body so not much to get out. The spots where it had
> >>> separated a bit I was able to get out a bit more. I then used a nylon
> >> brush and some alcohol and scrubbed in the crack as best as I could
> while
> >>> wiping it down with a rag. It was as clean as I could get it. I taped
> it
> >> off leaving a spot for about a 1/16" bead of sealant. I used RTV. Ran my
> >>> finger along the bead to push into the crack as best as i could and
> >> removed the tape. Job done.
> >>> I woke up to a heavy rain this morning and excited to see the fruits of
> >> my labour, I poured a coffee and headed out with a flashlight. Now. The
> >>> big question. Did it work??? Drum roll please!!!!...
> >>>
> >>> NO! Well sort of...
> >>>
> >>> It did limit the amount of water getting in and targeted the
> culprit(s).
> >> My coach is on a sloped driveway, nose down, so the gutters have all the
> >>> water coming out the front end. That stream is permeating at the body
> >> seem behind the fender and beside but below the window on both sides.
> Right
> >> at
> >>> the belt line. It's not coming from any higher. It's right at that
> >> joint.I had previously sealed those seam lines and cut out about a 1/4"
> to
> >>> accommodate the new sealant. I suspect there is a gap between the 2
> >> sealants where water is still getting in. I now know what I have to do.
> Just
> >>> have to wait for the rain to stop here in Vancouver which can take some
> >> time.
> >>> Anyway, I guess I'm back inside the coach until the rain stops. Much to
> >> do in there as well.
> >>> Shawn
> >>
> >> --
> >> C. Boyd
> >> 76 Crestmont
> >> East Tennessee
> >>
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