Help with Front Caliper Bleeder(s) - BMW Luxury Touring Community
 
LinkBack Thread Tools Display Modes
post #1 of 7 Old Mar 20th, 2020, 7:09 am Thread Starter
Junior Member
 
Join Date: Apr 2015
Posts: 18
Help with Front Caliper Bleeder(s)

I am installing new Spiegler brake lines. My bike is a 1999K1200lt. The right front caliper has a very different looking bleeder than the one of the left. I managed to strip the hex cap when I was trying to remove it. So 2 questions:

1. What is this part on the Right caliper? What is its function?
2. Can't I just replace it with another bleeder like the one in the left caliper? The female side on each caliper look the same configuration to me.

Thanks.

Last edited by RABlvmy88; Mar 20th, 2020 at 7:26 am. Reason: Added Pic
RABlvmy88 is offline  
Sponsored Links
Advertisement
 
post #2 of 7 Old Mar 20th, 2020, 7:31 am
Senior Member
 
bmwcoolk1200's Avatar
 
Join Date: Feb 2015
Posts: 4,190
Re: Help with Front Caliper Bleeder(s)

Yes, it can be removed and replaced with a standard bleed screw but be aware that it is in there with loctite and will require some heat to remove without bugaring the threads.

BMW vent screw
34 21 2 330 310 VENT SCREW - M10 0.02 1 $13.69

You may be able to find one for less. I just went ahead and bought the BMW part but it was only $10 when I did.
Attached Thumbnails
Click image for larger version

Name:	Vent Screw.jpg
Views:	21
Size:	21.5 KB
ID:	156043  

Gordon
Sugar Hill, GA
2001 K1200LTI – Champagne (current ride) Lazy Susan
1998 R1100RT – Never should have sold it
1974 Yamaha TX 750 Twin. Omni Phase Balanced


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
bmwcoolk1200 is offline  
post #3 of 7 Old Mar 20th, 2020, 1:33 pm
Senior Member
 
dukey33's Avatar
 
Join Date: Feb 2008
Location: Seabrook, TX, USA
Posts: 707
Re: Help with Front Caliper Bleeder(s)

I don't recall it being very hard to remove. I think I just used a $10 heat gun.

Dave
-2000 K1200LT
-------------------------------
Life's too short to ride ugly motorcycles
dukey33 is offline  
 
post #4 of 7 Old Mar 20th, 2020, 2:41 pm
Senior Member
 
bmwcoolk1200's Avatar
 
Join Date: Feb 2015
Posts: 4,190
Re: Help with Front Caliper Bleeder(s)

Quote:
Originally Posted by dukey33 View Post
I don't recall it being very hard to remove. I think I just used a $10 heat gun.
Exactly but if you don't use heat, you are likely to leave the aluminum threads from the bleed attachment in the caliper making it unusable.

Gordon
Sugar Hill, GA
2001 K1200LTI – Champagne (current ride) Lazy Susan
1998 R1100RT – Never should have sold it
1974 Yamaha TX 750 Twin. Omni Phase Balanced


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
bmwcoolk1200 is offline  
post #5 of 7 Old Mar 20th, 2020, 3:14 pm Thread Starter
Junior Member
 
Join Date: Apr 2015
Posts: 18
Re: Help with Front Caliper Bleeder(s)

Thanks Guys, I did get it out fine, the hex cap on the top of the part is what is stripped. I just dont fully understand why they put this in and what its function was. I think it is called a "filler adapter", and I guess one is supposed to loosen the hex cap to bleed at that point. Just not sure why this part was used as compared to a traditional bleeder screw. Thanks or all the help.
RABlvmy88 is offline  
post #6 of 7 Old Mar 20th, 2020, 5:02 pm
Wrencher Extraordinaire
 
jzeiler's Avatar
 
Join Date: May 2004
Location: Hazel Green, AL, USA
Posts: 13,650
Re: Help with Front Caliper Bleeder(s)

It was used to "Fill" the brake system during production. Best way to fill an empty system is to push fluid from the calipers to the reservoir. BMW stopped that practice when they went to the servo brake system which had four separate circuits.

John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 114 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
K4AN

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
jzeiler is offline  
post #7 of 7 Old Mar 21st, 2020, 11:15 am Thread Starter
Junior Member
 
Join Date: Apr 2015
Posts: 18
Re: Help with Front Caliper Bleeder(s)

Thankyou! I was perplexed as to why this part was needed. Appreciate the explanation.
RABlvmy88 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the BMW Luxury Touring Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome