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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: Motorhobo on July 24, 2018, 10:06:28 AM

Title: Changing locks in ignition switch assembly
Post by: Motorhobo on July 24, 2018, 10:06:28 AM

Is it possible to change the lock in an ignition switch assembly or is the lock epoxied or otherwise permanently mated with the lock housing?

Thanks -- MH

Title: Re: Changing locks in ignition switch assembly
Post by: Filmcamera on July 24, 2018, 11:13:29 AM

I am pretty sure it can be changed, I took mine out of my K100 RS 16V - I know your bike is different in many areas but I am pretty sure you will be bale to change the lock.

Title: Re: Changing locks in ignition switch assembly
Post by: Motorhobo on July 24, 2018, 11:25:09 AM

I'm not sure about that. Drake puts your K100RS in the K1100 section with separate parts. He has K75 ignition switches only as a complete assembly with key and lock. The fiche

https://www.bobsbmw.com/store/microfiche/DisplayImage.aspx?Size=Full&Type=Z&ImageID=163798

shows the lock housing as separate units but doesn't show they're joined.

I'll go take another look now -- if anyone has gotten the ignition switch lock out of the lock housing on 2V K-bikes feel free top chime in.

Title: Re: Changing locks in ignition switch assembly
Post by: Martin on July 24, 2018, 05:40:05 PM

On the 75s the whole switch just pushes into the rubber dash pad. I have removed the tumblers from the switch. To remove the switch needs to be in the on position and a piece of wire ( straightened paper clip) pushed into a small round hole in the housing. By pushing the paper clip in a detent is released allowing the tumblers to be removed. I am doing this from memory from about 15 years ago, so no responsibility accepted. :dunno
Regards Martin.

Title: Re: Changing locks in ignition switch assembly
Post by: Motorhobo on July 24, 2018, 08:35:28 PM

Hey Martin -- I suspected there'd be some kind of pinhole release but I still haven't found it. There are indentations on either side of the housing that look like they'd be a release mechanism but I didn't any pinhole...I'll take another look in the morning. Thanks!

Title: Re: Changing locks in ignition switch assembly
Post by: Laitch on July 25, 2018, 04:05:16 AM

Quote from: Motorhobo on July 24, 2018, 08:35:28 PM

Hey Martin -- I suspected there'd be some kind of pinhole release but I still haven't found it.

Woodgeek's first post photo (http://www.motobrick.com/index.php/topic,11172.msg97228.html#msg97228) doesn't show the lock in its switch assembly position but it does show the location on the cylinder of its release tab and describes that he pushed the lock cylinder outward from the housing once he depressed the tab.

Title: Re: Changing locks in ignition switch assembly
Post by: Motorhobo on July 25, 2018, 10:21:11 AM

Thanks Laitch -- masterful piece of searching there. I searched barrel, lock, ignition switch, lock core and cylinder but I guess I didn't combine lock and cylinder.

Anyway, I see the wafer/tang down at the bottom of the housing recess where the lock lives -- it was covered with grime. Will try to get it out when I find the key -- it's my parts bike so finding the key will take some searching of the physical variety.