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Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by Mikef5000, Dec 4, 2013.
Thicker than 3.0mm. Also apply some vaseline when inserting. Seems you are really close.
24 hrs and no drips which is more promising than anything else I've tried.
I recently changed the filters and used a handful of Silicon - base lubricant (that stated on the label that it doesn't react with gas or petrol) on the oring as well as the tank itself and pressed the pump evenly on two of its corners until it popped in. Also after it pops in there was a minimal play so I moved it just a tiny bit in out so that the oring sits right. BTW, didn't even have to use the new rings, the old ones were in perfect shape.
Tapatalked @ sgsIV
The 932 o-rings started leaking after 2 weeks. This was 2 days before starting out to ride the continental divide. I resorted to the Permatex 2 as mentioned above with the 932 (3mm dia) o-ring. I let it cure for 24 hours and then I smothered it like icing on a cake near the bolts and flange area. It lasted good enough for the 11 day 8000 km trip. It started leaking half way through the trip. The bike is currently parked outside because of the fuel leak. Will try the Permatex 2 again, but with a longer cure. I overfilled the tank many times which probably didn't help the Permatex since it was attacking it from the inside and outside.
What other products would anyone recommend for sealing the flange?:eek1
Had the same problem last year with fuel dripping from the fuel pump front securing screw (at 48k and 6 years). My tank had also distorted, with the hole measured oval by .024" and the tank mounting bolts increasingly difficult to align.
I tried new and larger o rings, DowCorning 55 seal lube and RTV under the flange - none of which fixed the leak for more than a week.
I then obtained some aerospace high strengh fuel tank sealer, applied both over and under the annular and flange o rings and reinstalled the pump - being careful not to over-tighted the bolts. This fixed it.
This 2 part mix sealant is manufactured by PRC-Desoto spec PR1770B (http://www.ppg.com/coatings/aerospace/sealants1/pr_1770_class_b.pdf).
Managed to source some on fleabay.
It cures to a very tough rubber consistancy and does allow (with care) subsequent removal of the pump.
I'll see where I can source this product. It sounds more promising than what I've tried so far.
How common is this leaking problem.
Has anyone changed out a pump and not had a leak?
Wondering if I should buy things to prepare for the worst.
On mine I found it was one of the threaded holes in tank was cracked. I used longer bolts and permatex #2 on threads and flange. Still dry after a year and several thousand miles..
Any idea how much longer the bolts you used were?
Maybe 3/16" or less dont remember for sure. One bolt was partially stripped also and I bought bike new?
I thought mine was orings too til discovered cracked messed up bolt hole in tank.
Just came home from going thru your part of the world..beautiful country!!
I broke down and bought the OEM o-rings. The annular o-ing a much larger diameter than the other o-rings I purchased. The diameter was 3.11. The biggest 932 I had found was 2.97. The larger diameter fit in quite easily into the fuel tank.
I ended up replacing both sections of fuel line between the pump and the throttle body. Both were damaged with what looked like pin holes. They weren't leaking yet, but on their way. I broke the quick connect after removing it so many times. I changed that at the same time.
I still had a leak. The fuel was coming from one of the four holes in the tank. I had previously used thread sealant tape for natural gas/gasoline. I tried thread sealant paste and it worked perfectly. It wasn't leaked in over 4 months. It has only been sitting in the garage though. We'll see how it works in the summer.
I feel like I'm sandwiching the quick connect between the tank and the frame. I'm trying to figure out how to protect it. In the past, I have put gorilla tape over the connection as a backup for them splitting apart. This is different. It's stuck in a hard place.