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1Back to top Go down   bit inside gas cap nose -- 1990 K1 Empty bit inside gas cap nose -- 1990 K1 Fri Feb 21, 2020 10:01 pm

bldrhouse

bldrhouse
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this is a photo of the gas cap when flipped over.
The "nose" is the conical piece; inside that conical there is what appears to be a pressure valve of some kind. Since it popped out when I got the nose off, I'm not sure which way it goes back in -- see pic 2 and 3, and not sure where the small flat gasket goes: on top or underneath?  Regular K bikes don't seem to have this bit.


http://forum.kforum-tech.com/members-upload/uploads/GAS_CAP_BITS_CONFUSION.docx


YOU'LL HAVE TO DOWNLOAD DOCUMENT TO VIEW QUESTION ON IT


thanks,  zk



Last edited by bldrhouse on Fri Feb 21, 2020 10:02 pm; edited 1 time in total (Reason for editing : correction)

    

2Back to top Go down   bit inside gas cap nose -- 1990 K1 Empty Re: bit inside gas cap nose -- 1990 K1 Fri Feb 21, 2020 10:22 pm

Laitch

Laitch
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All I get is code at that link. Anyway, watch this .


__________________________________________________
1995 K75 81,000 miles
bit inside gas cap nose -- 1990 K1 Usa-lo10
    

3Back to top Go down   bit inside gas cap nose -- 1990 K1 Empty Re: bit inside gas cap nose -- 1990 K1 Fri Feb 21, 2020 10:42 pm

bldrhouse

bldrhouse
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@Laitch wrote:All I get is code at that link. Anyway, watch this .


thanks; used that for rebuild, but interior of K1 cap is different than the K100 cap. It has interior bits that are the issue, and not in that vid.

cannot post pix since not enough posts..

will send directly to you if you email me at zigyphoto@gmail.com

    

4Back to top Go down   bit inside gas cap nose -- 1990 K1 Empty Re: bit inside gas cap nose -- 1990 K1 Fri Feb 21, 2020 11:05 pm

Laitch

Laitch
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@bldrhouse wrote:
@Laitch wrote:All I get is code at that link. Anyway, watch this .
but interior of K1 cap is different than the K100 cap. It has interior bits that are the issue, and not in that vid.
The interior of your K1's cap is different, but the K1, and later model K100/K75 caps all have the same part number. An earlier cap may have replaced your original. The earlier caps have been indicated by BMW to be prone to vapor lock.

Somebody with a K1 here will clear this up for you as soon as you post some photos.


__________________________________________________
1995 K75 81,000 miles
bit inside gas cap nose -- 1990 K1 Usa-lo10
    

5Back to top Go down   bit inside gas cap nose -- 1990 K1 Empty Re: bit inside gas cap nose -- 1990 K1 Fri Feb 21, 2020 11:10 pm

bldrhouse

bldrhouse
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@Laitch wrote:
@bldrhouse wrote:
@Laitch wrote:All I get is code at that link. Anyway, watch this .
but interior of K1 cap is different than the K100 cap. It has interior bits that are the issue, and not in that vid.
The interior of your K1's cap is different, but the K1, and later model K100/K75 caps all have the same part number. An earlier cap may have replaced your original. The earlier caps have been indicated by BMW to be prone to vapor lock.

Somebody with a K1 here will clear this up for you as soon as you post some photos.

Yes, cap itself is not the problem; the issue is those interior bits, which don't appear in the vid https://www.euromotoelectrics.com/product-p/ft-gasketkit461.htm   when he removes the conical cap..

I await the wisdom of a K1 rider....  

thanks for your good ideas and help.

Aren't we motorcyclists a fine community?

z

    

duck

duck
Life time member
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The K1 gas cap is exactly the same, internally and externally, as the other Ks. 

(The gas tank is the same too.)


The docx file downloaded fine for me.



Last edited by duck on Sat Feb 22, 2020 5:03 am; edited 1 time in total


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

duck

duck
Life time member
Life time member
Here's where the O-rings go - I lifted them out of place for the picture to make them easier to see.

bit inside gas cap nose -- 1990 K1 UXzYAXu


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

bldrhouse

bldrhouse
active member
active member
@duck wrote:Here's where the O-rings go - I lifted them out of place for the picture to make them easier to see.

Thanks!  the top picture shows me almost exactly what I needed to know -- but issue is not the o-rings; it's the little spring and white capped gizmo on top.  There is a small circular gasket (not o-ring) that I believe fits UNDER the piece on which the spring sits?

z

    

duck

duck
Life time member
Life time member
This gasket? It goes under this piece:

bit inside gas cap nose -- 1990 K1 Nss8Mgq


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

10Back to top Go down   bit inside gas cap nose -- 1990 K1 Empty THANK YOU THANK YO! Sat Feb 22, 2020 3:05 pm

bldrhouse

bldrhouse
active member
active member
@duck wrote:This gasket? It goes under this piece:

 
Got it! 

What a great start to the morning!

Interesting how that internal gizmo does not show on the vid for rebuilding the gas cap.

Thank you very much.

now maybe the gas cap mounting ring will finally come loose from the gas tank opening...

z

    

11Back to top Go down   bit inside gas cap nose -- 1990 K1 Empty Re: bit inside gas cap nose -- 1990 K1 Sat Feb 22, 2020 3:38 pm

duck

duck
Life time member
Life time member
A word of advice: Don't take Chris Harris videos as gospel. (He's the guy who did that gas cap video.) It's great that he does those and he knows a lot about Ks but that's just the opinion of one mechanic.  For example, his advice to pack all of the gas cap parts with petroleum jelly seems very silly to me and is not necessary.

That gas cap mounting ring will come loose form the tank. Sometimes it just needs a little persuasion.

When you put the gas cap back on put some anti-seize on the screw threads and don't he-man tighten them.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

12Back to top Go down   bit inside gas cap nose -- 1990 K1 Empty Re: bit inside gas cap nose -- 1990 K1 Sun Feb 23, 2020 9:00 pm

bldrhouse

bldrhouse
active member
active member
@duck wrote:A word of advice: Don't take Chris Harris videos as gospel. (He's the guy who did that gas cap video.) It's great that he does those and he knows a lot about Ks but that's just the opinion of one mechanic.  For example, his advice to pack all of the gas cap parts with petroleum jelly seems very silly to me and is not necessary.

That gas cap mounting ring will come loose form the tank. Sometimes it just needs a little persuasion.

When you put the gas cap back on put some anti-seize on the screw threads and don't he-man tighten them.

Duck,

thanks for that; I get it and the assembly finally came off with lots of silicone spray and a bit of gentle leverage.  foul and now cleaned.
yeah, all that petroleum jelly seems a bit much.

z

    

13Back to top Go down   bit inside gas cap nose -- 1990 K1 Empty Re: bit inside gas cap nose -- 1990 K1 Tue Mar 03, 2020 2:11 pm

ashthespy

ashthespy
active member
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Don't mean to hijack this thread, but didn't think my question needed it's own thread ;-)

My current tank leaks gas out the lid when I top it up and take a little bend or brake a bit aggressively right after. My lid is the one with the key and the push button.
Should I replace the seals for this cap or look to change to the "newer" cap with only the key?

EDIT: Woah the whole thing is a bit pricey BMW-K-100-LT-RT-RS-16111453012 , so would rather rebuild the seals only..

Cheers,
Ash


__________________________________________________
1984 K100 RS
    

14Back to top Go down   bit inside gas cap nose -- 1990 K1 Empty Re: bit inside gas cap nose -- 1990 K1 Tue Mar 03, 2020 3:27 pm

MartinW

MartinW
Life time member
Life time member
Be patient second hand later caps do come up. After being quoted $180.00 Au by a BMW wrecker in Victoria, I picked up a really good one off Gumtree for $80.00 Au. Keep checking Ebay and whatever your equivalent of Gumtree/Craigs List is.
Regards Martin


__________________________________________________
K75s Hybrid
    

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