7 replies [Last post]
jeffrey.salman
jeffrey.salman's picture
 Offline
VBMWMO #7728
Joined: 04/16/2010
Posts: 32

Hello all,

Any trick to removing the gas cap from the gas tank? It looks like a "pin" that I should be able to tap at one end, just like the pin that holds the carb floats. I successfully rebuilt the CV carbs and those tiny pins came out easily. Any ideas? Also it looks like a rivet that secures the old dried up cork gasket to the cap. I have a new gasket and rivet ready to go on but I need to remove the cap and then remove the rivet first. Any ideas would be most appreciated. I am making slow progress with this restroration thanks to the help on this forum.

Jeff

schrader7032
schrader7032's picture
 Offline
VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 3475
What year and model? I

What year and model? I presume you're talking about the tanks prior to the late model '76, the 6.3 gallon tanks. Duane has a discussion at the bottom of the page about the flip cap.

http://w6rec.com/duane/bmw/tank/index.htm

__________________

Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

jeffrey.salman
jeffrey.salman's picture
 Offline
VBMWMO #7728
Joined: 04/16/2010
Posts: 32
1971 R 75/5

My bike is a 1971 R 75/5. The gas tank looks like a toaster tank with the chrome panels and BMW emblem missing. So the tank may not be the original. I have no history on the bike other than knowing that it was abandoned in a field for the last 20 years. ( I already rebuilt the CV BING carbs and the petcocks). I also have the inside of the tank cleaned out and ready for gas).

TonyR90S
TonyR90S's picture
 Offline
Joined: 12/14/2010
Posts: 10
For removing the cap from the

For removing the cap from the tank, just remove the pin with the cap open, it should go out easily with a hammer.
It's much more difficult to remove the pin of the gasket which is in the cap, it's hardly pressed in its place. You can cut out the pin, drill a new hole and put a parker screw instead of the pin.

__________________

Italian Beemer (Milano)
1974 R90S
1989 R100RS

jeffrey.salman
jeffrey.salman's picture
 Offline
VBMWMO #7728
Joined: 04/16/2010
Posts: 32
Thank you

I will give that a try. Thanks again.

wsmasters
wsmasters's picture
 Offline
VBMWMO #8031
Joined: 05/29/2011
Posts: 2
71 gas cap

A bit off topic but my 71 has a locking gas cap. I would really like to get a key for it. Is a locking cap stock for the large 71 tank? Anyone have an idea on where a key might be obtained?
Thanks
Bill

__________________

71 75/5 bill

schrader7032
schrader7032's picture
 Offline
VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 3475
A locking gas cap was an

A locking gas cap was an option for the /5s. You might check with this website for keys - http://www.motorcyclekeys.com/. Or try and find an old-fashioned locksmith.

__________________

Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

GearHeadDiver
GearHeadDiver's picture
 Offline
VBMWMO #7685
Joined: 09/13/2009
Posts: 21
Removing Rivet

Hello all,

I just received a new gas cap gasket, searched all the forums and everywhere else to see how to remove the old seal/gasket and found a couple of suggestions.

I went out to the shop, removed the gas cap from the tank...used a piece of old t-shirt (rag) to protect the cap's chrome surface, grabbed 2 medium sized spring clamps to press down (compress) the old sealing ring/gasket...held it down quite necely. This allowed a small space between the rivet and the tiny washer under the rivet head...with a small chisel pinch, very gently tapped around the area between the rivet head and washer, when there was a little more space I used a small set of needlenose vise grips and slowly, gently twisted (while pulling) the rivet. Popped right out with no damage to the rivet.
Now, I can either tap the rivet back in, or tap the hole and use a small machine screw (as suggested in other posts)
Hope this helps anyone trying to change the gasket/seal.

Ash...

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.