RE: Gas cap won't latch - 4

Zitat von Lee im Beitrag #42

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Zitat von Richard230 im Beitrag #40

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I don't know what the vertical pin does, but mine does not stick up through the hole in the plunger. I really wish I knew exactly how the cap keyless locking mechanism functioned. I can't figure out what the vertical pin does, but I suspect whatever it does,

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I also would like to know what the vertical pin does.
On both of our bikes the pin does not always stick up. On our bikes the cap works ok even when the pin is not raised.
I started to pay attention to that pin after we had trouble with Debbie's cap not opening.

I mentioned to the service manager at Kansas City about the pin not always being in the raised position and he said it didn't matter.

I think her plunger was gummed up. After spraying it with WD 40 several times it took two days for the cap to work normally.
When her cap would not open she would cycle the switch on and off or raise the tab several times.
Her hearing is better than mine. She would listen for a click before fully lifting the tab.

I don't think any of this will help you but it might help others when the cap refuses to open.

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Zitat von Freddyfruitbat im Beitrag #7

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I had the cap intermittently jam shut on my keyless 1200RS a few months ago; fortunately it got swapped out during month 24 of my 2-year used warranty(!)

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Zitat von Lee im Beitrag #43

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The keyless cap cost $438 US

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I may have lost it once, but I have a key and my gas cap always latches.....

Zitat von Richard230 im Beitrag #46

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I am going to pass on that eBay fuel cap assembly. Just installing it on the fuel tank would be a challenge for me. If I can't fix the problem by the weekend, I still plan to break off the plunger, or ram it back into the mechanism with a hammer and drift so that it is not obstructing the closing of the cap. It looks to me like the cap should close and latch just fine once that plunger is out of the way and I really don't need a locking gas cap, just one that opens and closes.

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Zitat von Mr. 36654 im Beitrag #48

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I may have lost it once, but I have a key and my gas cap always latches.....

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Zitat von Lee im Beitrag #50

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Zitat von Mr. 36654 im Beitrag #48

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I may have lost it once, but I have a key and my gas cap always latches.....

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Shit can still happen :)
I had to replace the gas cap assemble on one of our K75 bikes because the lock failed.
I dislike any type of lock on a gas cap.

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Here is where things stand now with my headache. Clearly the vertical locking pin is the problem. I pushed the locking plunger all the way in and the pin is now exposed. There is no way I can press it downward so that it can be inserted into the hole in the plunger. I can press it down very slightly, but not enough to get it back into the plunger and its hole. Looking at the parts, my best guess is that the pin is moved by an electric magnet and that is what pulls the plunger back and forth. But something is either stuck, bent or the wire controlling the mechanism has either become disconnected or is broken. I am just very thankful that the device broke after I had opened up the cap and had filled my fuel tank. If something had failed while the cap was locked I definitely would have been SOL. Unless someone comes up with another idea for solving this puzzle, I still think my only option is to remove the plunger mechanism by force and hope that the cap will seal once that obstruction has been removed. If I can manage to do that is sure looks to me like the cap should lock down with the movable tang fitting into the slot under the front of the cap cover as long as the plunger is not there to prevent fully closing the cap. I just wonder how much damage I will do when I try to remove the plunger and how much force it will take to remove it. Attached are the latest pictures of the locking plunger and its unruly locking pin.

IMG_9710.JPG - Bild entfernt (keine Rechte)IMG_9712.JPG - Bild entfernt (keine Rechte)

Zitat von wessie im Beitrag #53

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have you considered lifting the mechanism from the tank? From the Ebay item, it looks like it comes out and you can check the electrical connection and maybe see if the pin has popped out of a guide or something

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Dose the latch fully extend 90 degrees?, if not there is a small black rubber switch under the latch that may be stuck?

Regarding the pin that you believe is actuated by an electromagnet - Have you started the bike and then shut it down pior to trying to move the pin? I believe we have 90 seconds from the time the bike is shutdown to open the gas cap.
Just thinking the same 90 second period might be applicable to moving the pin.

Just a thought.
Bill

Zitat von Unkgd im Beitrag #56

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Regarding the pin that you believe is actuated by an electromagnet - Have you started the bike and then shut it down pior to trying to move the pin? I believe we have 90 seconds from the time the bike is shutdown to open the gas cap.
Just thinking the same 90 second period might be applicable to moving the pin.

Just a thought.
Bill

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There's nothing to fear in removing the filler cap. If I remember correctly, the whole job can be done with a TX25 screwdriver.

More discussion here on the subject.... on another BMW forum.... consensus of opinion is.. slide the locking pin towards the rear of the motorcycle to get the cap to shut. It is possible to tap it into the wrong position when refuelling. (I appreciate the OP has tried this)

https://advrider.com/f/threads/brand-new...ailure.1131507/

Zitat von Richard230 im Beitrag #46

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Zitat von Lee im Beitrag #42

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Zitat von Richard230 im Beitrag #40

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I don't know what the vertical pin does, but mine does not stick up through the hole in the plunger. I really wish I knew exactly how the cap keyless locking mechanism functioned. I can't figure out what the vertical pin does, but I suspect whatever it does,

---

I also would like to know what the vertical pin does.
On both of our bikes the pin does not always stick up. On our bikes the cap works ok even when the pin is not raised.
I started to pay attention to that pin after we had trouble with Debbie's cap not opening.

I mentioned to the service manager at Kansas City about the pin not always being in the raised position and he said it didn't matter.

I think her plunger was gummed up. After spraying it with WD 40 several times it took two days for the cap to work normally.
When her cap would not open she would cycle the switch on and off or raise the tab several times.
Her hearing is better than mine. She would listen for a click before fully lifting the tab.

I don't think any of this will help you but it might help others when the cap refuses to open.

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But if it doesn't make any difference if the pin has not raised into the hole in the plunger, than what possible purpose could it be useful for?

I think what I will try next is some Mouse Milk lubricant. A friend who owns an airplane gave me a little of that very expensive lube. He claims that it is the best penetrating lubricant available. I tried it once on a water spigot handle that wouldn't move and it loosened up immediately.

I am going to pass on that eBay fuel cap assembly. Just installing it on the fuel tank would be a challenge for me. If I can't fix the problem by the weekend, I still plan to break off the plunger, or ram it back into the mechanism with a hammer and drift so that it is not obstructing the closing of the cap. It looks to me like the cap should close and latch just fine once that plunger is out of the way and I really don't need a locking gas cap, just one that opens and closes.

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