Bottom seat bridge bolts - BMW Luxury Touring Community
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post #1 of 10 Old Mar 29th, 2020, 10:55 pm Thread Starter
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Bottom seat bridge bolts

Hello all. Hope everyone is doing their best with this partial national shutdown. When i removed the seat bridge for pulling my gas tank off for maintenance. The bottom right side bolt that goes in the Aluminum frame got a little buggerd up coming out . I'll have to run a tap in. Clean up the threads in the frame And a dye on the bolt. Anyone know thread pitch?? Thanks in advance..

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.

Last edited by james216; Mar 30th, 2020 at 9:35 am.
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post #2 of 10 Old Mar 30th, 2020, 4:48 pm
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Re: Bottom seat bridge bolts

M8 x 1.25 Usually they get buggered going in. I now have a set of heli-coils in M8 .

John
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post #3 of 10 Old Mar 30th, 2020, 10:27 pm Thread Starter
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Re: Bottom seat bridge bolts

Hmm. I noticed the right lower bolt had some difficulty twisting out. Then I looked at the starting threads. Ugg. Some aluminum in the 2nd pass and some aluminum dust below the hole. Not horrible. Chasing it and running a die should work.

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.
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post #4 of 10 Old Mar 31st, 2020, 6:48 am
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Re: Bottom seat bridge bolts

Quote:
Originally Posted by james216 View Post
Hmm. I noticed the right lower bolt had some difficulty twisting out. Then I looked at the starting threads. Ugg. Some aluminum in the 2nd pass and some aluminum dust below the hole. Not horrible. Chasing it and running a die should work.
These are a bugger to get lined up, but you want to push and pull the frame into alignment before inserting the bolts. You donít want to use about to pry the seat frame hole into alignment or have side force on the bolt while tightening. It is a pain when working alone. Much easier if you have someone to insert the bolts while you are wrestle the frame.

2017 KLR650 "Mule"
2007 K1200LT "Starship Enterprise", VOICE II, Navigator V, Motorrad Communicator
1987 Kawasaki Voyager XII
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post #5 of 10 Old Apr 3rd, 2020, 12:45 pm
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Re: Bottom seat bridge bolts

Having done this a few time of late, don't ask, I put in the clutch side loose, then the right rear, and finally I use a long screwdriver to lift the rear of the tank to line up the right front.
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post #6 of 10 Old Apr 3rd, 2020, 12:48 pm
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Re: Bottom seat bridge bolts

Same thing as what I usually do.

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
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post #7 of 10 Old Apr 3rd, 2020, 6:39 pm Thread Starter
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Re: Bottom seat bridge bolts

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Originally Posted by Voyager View Post
These are a bugger to get lined up, but you want to push and pull the frame into alignment before inserting the bolts. You donít want to use about to pry the seat frame hole into alignment or have side force on the bolt while tightening. It is a pain when working alone. Much easier if you have someone to insert the bolts while you are wrestle the frame.
I did it last time alone. Yea. That's probably when it happened. Putting them back in. I had no idea. Good advice Thanks...

2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
I'm a 4 percenter.
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post #8 of 10 Old Apr 5th, 2020, 12:09 am Thread Starter
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Re: Bottom seat bridge bolts

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Originally Posted by alabrew View Post
Having done this a few time of late, don't ask, I put in the clutch side loose, then the right rear, and finally I use a long screwdriver to lift the rear of the tank to line up the right front.
The right front? Has to mean the 8mm bolt ?

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1999 Suzuki Intruder VL1500LC. Betty Lou.
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post #9 of 10 Old Apr 5th, 2020, 4:42 am
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Re: Bottom seat bridge bolts

Every seat frame fits different. Some line up easy and others can be hard to get lined up. I always start the top smaller two bolts by the sting ray first & leave them loose.
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post #10 of 10 Old Apr 6th, 2020, 11:36 am Thread Starter
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Re: Bottom seat bridge bolts

I chased the threads on the bolt and frame. All is good. I will follow your advice.. Thanks Dave.
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2004 K1200LT. Big Mama
1999 Suzuki Intruder VL1500LC. Betty Lou.
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