Falcon Driver
Orange County
New Member
Joined: 07/27/2008
View Profile
 Offline
|
I have a class B Falcon 190 with a slight crack on the top of the black tank near the stem where the release valve is. It seems it has been rubbing on the frame over the years. Can anyone tell me the actual material of the plastic tank and has anyone used a plastic welder to repair? Any suggestions would be great. Thanks
|
USAFBILL
Alabama
Senior Member
Joined: 09/20/2002
View Profile
|
I have a plastic welder but my problems have always been where I couldn't get to the site withour removal so opted for easier repairs. Eternalbond tape will work great on repairs like this.
|
Polishnurse
Schodack, NY
Senior Member
Joined: 03/13/2007
View Profile
Offline
|
USAFBILL wrote:I have a plastic welder but my problems have always been where I couldn't get to the site withour removal so opted for easier repairs. Eternalbond tape will work great on repairs like this.
Unless you have played with a welder, I think you will find this they best way to go. It's a good repair and will most likly last longer then you. Serious give it a shot. I would just wash the area with a little spirts first to make sure it has a good clean service then a little 200 sand paper. Bill
|
Tenn Stud
Northeast, TN
Senior Member
Joined: 11/16/2004
View Profile
 Online
|
The tank is made of polyethylene same material as a milk jug. There no way you are going to find any material that will adhear to that material. No paint, no glue. I personally don't think the tape will last long. I spent over half of my life in the plastic business, When my black water tank was split from a blowen tire I repaired it with JB weld, A piece of aluminum and sheet metal screws. I covered the split with JBW about 1 inch each side of the crack screwed the alum to the tank then covered the alum and the screw heads with JB Weld. Never had any problems with it leaking. Kept the rig several more years. I have used plastic welders on about all kinds of plastic. They don't do well on polyethylene and polypropylene. In order to get any kind of adhesion to either of the two materials for must first flame treat the material before doing anything. Hope this helps
|
Rodger
Tucson, AZ.
Moderator
Joined: 03/20/2002
View Profile
Online
|
Moved from "CVC".
|
|
|
sljkansas
Miami Co. Kansas
Senior Member
Joined: 09/28/2005
View Profile
Offline
|
I fixed my old class C black water tank with the 2 part epoxy that come in the plunger type tubes. I use the 5 minute type (Wal-mart has it in the paint area with all the glues). Mix it up and use a flat stick (popcycle or tounge depressor. It is still holding after 5 years. I have also used the JB weld putty to fix larger holes.
Steve & Linda
Son married (1 DIL, 3 granddaughters 1 grandson)
Daughter in College
Miami CO. Kansas
2004 F350 CC dually 8ft bed 6.0 PSD
2009 Bighorn 3670RL
B&W under bed hitch with 18k companion hitch
|
BillyW
North ID
Senior Member
Joined: 10/08/2003
View Profile
Offline
|
When I added tank heater pads, the one on the black tank definitely didn't want to stick very well. I ended up using Eternabond around the edges. It appeared to stick quite well. I can't verify it's still stuck since I insulated and covered the tank after that.
'97 F150 4X4
'04 Pioneer 18T6
|
stevenal
Newport, OR, USA
Senior Member
Joined: 03/16/2004
View Profile
Offline
|
Repair a RV polyethylene holding tank using A-Seal
'99 Bigfoot 1500
with low loss control on the Fantastic, Dino board on the Dometic.
Torklifts and Fastguns
'04 F350 V10 Crew SRW SB 4X4 6 speed
with tow hook replacement, dual rate charging, Line-X, Timbrens.
|
