Lower intake throttle body boots > advice? - BMW Luxury Touring Community
 
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post #1 of 7 Old May 26th, 2013, 2:56 pm Thread Starter
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Lower intake throttle body boots > advice?

I lowered the engine to replace the clutch.

Predictably I have the throttle body lower boots loose. (engine side of the throttle bodies)

I wish I saw a thread that included loosening the hose clamp on the lower so the upper non adjustable boot connection would not have disconnected.

I have played with fixing it and in the process I am not happy with any of the boot connections.

Is there a shortcut to temporarily remove the throttle bodies and lube and reposition all the boots? I would like to have the slip come from the adjustable clamps and then push the whole assembly down and then tighten the clamps.

It has to be right or the bike won't run correctly.

If you do a clutch replacement I would advise loosiening the adjustable clamps before doing the clutch and then reassembly would be much easier.

This must happen to everyone who does a clutch job, so before I make things worse how do I fix this? Do I need to lift the whole assembly and then reattach the upper and then lower the assembly?

Thanks,

Ian

2003 K1200LT
Aprilia Caponord





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post #2 of 7 Old May 26th, 2013, 3:20 pm
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Re: Lower intake throttle body boots > advice?

Same thing happened during my first engine tilt. For starters I dropped it way lower than needed.
The intake tubes almost came of the air-box. I removed that air-box and pushed the tubes back in with a plastic tool until the o-rings were seated properly.
I loosened the upper clamps on the boots for cyl 2-4, replaced the non-reusable clamps for cyl 1-2, and then dropped the air-box into them and tightened.
The photos show how tight things are in there...
Due to other issues I had to drop the engine completely and removed the fuel rail and throttle bodies.
If you haven't removed the left radiator fan assembly things will be pretty cramped. Also the left bracket (the one that holds the crash bar) should be off.
This should give you enough hand access to make sure the boots are properly installed with no air leaks.
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post #3 of 7 Old May 26th, 2013, 3:21 pm
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Re: Lower intake throttle body boots > advice?

Both of my LT's have the adjustable clamps on the whole throttle body. You just have to be careful on how you position them to make sure you have wide open throttle.

Dave Selvig
2004 Black LT
2000 Canon Red LT



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post #4 of 7 Old May 26th, 2013, 4:26 pm
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Re: Lower intake throttle body boots > advice?

I elected to remove the whole assembly when I did my clutch job. Made it a lot easier.
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post #5 of 7 Old May 27th, 2013, 12:31 am Thread Starter
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Re: Lower intake throttle body boots > advice?

Quote:
Originally Posted by jzeiler
I elected to remove the whole assembly when I did my clutch job. Made it a lot easier.

I am going to go this route. I have to know they are secure, I hate taking all the tupperware off.

If I remove them I can get it done rite.

Thanks for the help everyone,

Ian

2003 K1200LT
Aprilia Caponord





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post #6 of 7 Old May 27th, 2013, 9:04 am
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Re: Lower intake throttle body boots > advice?

Remove air box . I would also unclip and free the radiator , failure to do so COULD unseal the radiator lowers. then tilt motor.

Pete Murray
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post #7 of 7 Old May 27th, 2013, 3:52 pm Thread Starter
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Re: Lower intake throttle body boots > advice?

On tip I would pass on to others if you have to take the throttle bodies off, undo the engine vent hose.

It is on the other side next to the two fuel lines. It is held on with a hose clamp. If you take it off before removing throttle bodies you will not have to worry about it seperating from the throttle body manifold.

I managed to take everything off and after playing with the vent line I have everything reassembeled properly. Now my throttle cable gave way, I had the routing on the cables wrong and gave a twist of the throttle and the cable popped.

I need to do the update anyway to time to drop a little more coin before reassembly.

Ian

2003 K1200LT
Aprilia Caponord





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