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 Throttle Body Strip Down + Rebuild. 56k Beware. 
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 Post subject: Throttle Body Strip Down + Rebuild. 56k Beware.
PostPosted: Sun Jan 07, 2007 1:38 pm 
RT BiKiloPoster

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Hi,

Hopefully this is some help to you all.
I completely stripped my throttle body down and then took pics on the rebuild.

Firstly, Pay attention to which way the butterfly opens in the throttlebody and also which way to head of the screw faces.

This is the rear of the throttle body, the side which bolts up to the inlet manifold.
Image


Here is the throttle body before the strip down.
As you look at it, The top half of the butterfly should pivot towards you.
This is very important that you remember which way it pivots.
Image

Now turn the TB on the side where the throttle cable locates.
Now remove the 13mm nut and washer with the 2 prongs on from the threaded rod.

Image

You are left with this:
Image

Some of these parts maybe a little stiff to remove, So a gentle tap will help.
I used a small plastic tool I work with.
Remove the upper part where the throttle cable locates into.

You are left with this:
Image

Remove the washer.

Image

PAY ATTENTION TO WHERE THE WHITE COTTON BUD IS POINTING TO:

Image

You can make out where the springed coil is sitting. Now look at the previous 2 pics and take note of how it is sitting here also.

Remove the upper piece of metal, A gentle tap will suffice.
Once removed, the coil loses some tension and extends.

Image

Remove the upper white half of the plastic and take note of where the 2 prongs on the coil locate. Look where the blue finger is pointing. (I'm a smurf btw)
Remove spring.

Image

Notice the white plastic sleeve?

Image

Remove and store with the upper half and spring.

Image

Lower part of plastic on the right hand side, the spring is also placed down how it would sit on the TB and upper half of the plastic on the left - This is upside down by the way :mrgreen:


THIS IS ONE SIDE OF THE THROTTLE BODY STRIPPED.

I had a cup of tea at this point and a Mars bar!


Turn the TB over.
Sorry for the poor quality of this pic.

You have a long metal tab with 2 prongs either end, bent up over the 7mm bolts. I can only guess that these are to stop the bolts working loose?

Image

Bend back these tabs and remove the bolts.
**KEEP YOUR EYES OUT FOR ANY SMALL NUTS FALLING**
I'll show you what I mean in a minute.

Image

Once the bolts are undone, remove the upper black switch and store away.

You are left with this:

Image

Undo the 2 torx screws - T25 or T20.
And remove the 2nd black cover.

When I said watch out for falling nuts, what happens is when the bolts are removed the nuts that secure these bolts fall out from the bottom of the lower 2nd black cover.

Image

You can glue them back into place or use a bit of skill later in locating them, but the glue is the easier option.

This is the nut fitted back securely.
Only one came out which is wierd?

Image

**WORTH NOTING, THE ROD ON THIS SIDE HAS A "D" SECTION TO IT, SO EVERYTHING WILL ONLY FIT ONE WAY**

You are now left with this.
Remove the upper metal section. But at the same time, it may be fiddly due to the way how the springed coil sits inside a groove in it. Can you see it?

Also, note how the coil locates.

Image

You are left with this:
Image

Can you see the "D" section to the rod?

Image

Now lift off the coil with the white plastic insert.

Image


This is the 2nd side fully stripped.

Look at the butterfly. See the 2 flat bladed screws? Undo them.

The head of the screws must be at the rear of the butterfly/inlet manifold side.


Image


Once the screws are removed, (Not like in this pic BTW), turn the butterfly to the open position and press or tap the round disc out.

Image

Once the disc is removed, the rod will push out easy enough - if not, a gentle tap will help.

Image

Image

At this stage, I also removed the idle bleed screw (Term correct?)

Seen here just above the bar:

Image

Or here just above the bar:

Image

Apparently it's a beyatch to set-up and get the idle perfect? But I just noted how much thread was showing and refitted it to the same, if not slightly out position.

I then soaked pretty much in a degreasant/cleaner and got it looking shiny.
I paid particular attention to where the idle screw sits and its threads.
Also the 2 take offs to the actuator and DV.

I cleaned inside the TB and paid attention to any raised spots etc.

I also cleaned up the 2 springed coils, I think I should of put some grease on them? I only used wd40. But this can be addressed at a later date.

I wd40'd the butterfly too.

Image

Image



One thing I will say, is when you are refitting the butterfly disc back into the rod section - Take a little time to get it sitting perfect with no gaps.

Rebuilding is exactly the opposite of this.

The way I done mine was by stripping it down, then completely forgetting where everything goes :roll: Then stripping each half of my other throttle body down. So I know this is correct :mrgreen:

HTH

Chaz

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PostPosted: Sun Jan 07, 2007 1:39 pm 
RT BiKiloPoster

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Nice one chaz.

Now go and do it all again with MACRO mode on the cam :P

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PostPosted: Sun Jan 07, 2007 1:46 pm 
RT BiKiloPoster

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Haha!! I was using my 2 day old N73 with oily hands.

It's still grubby now :(

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PostPosted: Sun Jan 07, 2007 1:47 pm 
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The camera seems to backfocus quite a bit.. :roll:

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PostPosted: Sun Jan 07, 2007 1:51 pm 
RT BiKiloPoster

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Well.. I'm not a cameraman :wink:

I was more concerned about trying to take pics, get my car running perfect and also doing a guide for other people.

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PostPosted: Sun Jan 07, 2007 3:00 pm 
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Pleased to hear you got it sorted mate :D

Good detailed guide too with lots of helpful pics... im sure it will be very useful to many as it seems to be quite a common problem.


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PostPosted: Sun Jan 07, 2007 3:26 pm 
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Good post ...
had nowt that i could fix on mine ...just took it all apart cleaned and re-oiled .
hence i didn't take any pics ...as there wasn't anything to fix really...play in the butterfly mounts ...would be the only thing i could sort out ...but it had non that was noticeable.

taking pics ...

not having a go at you ...just some tips.


when i first took close ups they were like some of yours ....my camera was too near to the subject


you can get them better ...if you never hold the camera closer than a foot to 18 inches ...put it in macro mode and zoom in ..from a foot 18 inches away
or take a very high res pic further back and crop in adobe.


you'll soon get good at it ...
i sometimes take about 10 pics for every one i use ....one with flash one without ...one in macro one out of macro ... flash in macro ..macro without flash .etc.


part of the problem ...is that the tiny LCD displays on the back of the camera...you cant tell if its in focus ...
my next cam will be an SLR digital ...you can look thru the lens on these and focus ...and see the actual pic your taking.


All the best...mark


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PostPosted: Sun Jan 07, 2007 3:56 pm 
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One point that I'll just add, if I may.

When I took the brass shaft that holds the butterfly disk out of mine, it has a sharp edge where the cut-out section is.

I spent just a couple of minutes smoothing this and since then, have never had any any sticking problems with this throttle body. :D


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PostPosted: Sun Jan 07, 2007 6:43 pm 
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I think this should be a sticky. :)


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PostPosted: Sun Jan 07, 2007 7:39 pm 
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Nice one chaz mate, I did mine today aswell and also took a load of photo's of every step, something like 40 photos i ended up taking i think.
End result is good though so im pleased with it.


One of it stripped down

Image

Then after a load of cleaning, loads more photo's and rebuilding here is a couple of the end result

Image

Image

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Last edited by Jase 220 on Sun Jan 07, 2007 9:47 pm, edited 1 time in total.

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PostPosted: Sun Jan 07, 2007 7:50 pm 
RT BiKiloPoster

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I knew you came down to work with an ulterior motive :twisted:

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PostPosted: Sun Jan 07, 2007 7:54 pm 
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Well didnt plan to do it so soon but seeing you making a start on stripping your throttle body yesterday gave me the incentive to do mine today.

Besides was too wet to fit de-cat today :( and this i could do in the dry :)

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PostPosted: Sun Jan 07, 2007 10:37 pm 
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Quality post mate, defo needs to be a sticky.

Also did mine today. Was FILTHY! !

Think thats sorted my idle and stalling problems as everything was clogged up.

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PostPosted: Mon Jan 08, 2007 1:00 am 
RT BiKiloPoster

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kash wrote:
Quality post mate, defo needs to be a sticky.

Also did mine today. Was FILTHY! !

Think thats sorted my idle and stalling problems as everything was clogged up.


Hi

Glad to hear it :)

Did you follow the guide? If so, was any of it unclear or did I miss anything out?
Any suggestions on making it better?

Cheers

Chaz

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PostPosted: Mon Jan 08, 2007 4:47 pm 
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chazjenkins wrote:
kash wrote:
Quality post mate, defo needs to be a sticky.

Also did mine today. Was FILTHY! !

Think thats sorted my idle and stalling problems as everything was clogged up.


Hi

Glad to hear it :)

Did you follow the guide? If so, was any of it unclear or did I miss anything out?
Any suggestions on making it better?

Cheers

Chaz


Sure did! Was browsing on here just before i started so that was a spot of luck. No mate, i though it was spot on, nice and precise.

Though one questins, are the cottons buds standard on the coupe? I couldn't seem to locate them :P

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PostPosted: Mon Jan 08, 2007 5:15 pm 
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Moved to FAQ.
Thanks all!

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 Post subject: Re: Throttle Body Strip Down + Rebuild. 56k Beware.
PostPosted: Tue Oct 28, 2008 10:55 pm 
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Cleaned mine today... I think it was in need of it!

Image

Image

Those are 'before' pictures, obviously.

Not as clean as some on the outside, but clean where it counts ;)

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