Wednesday, September 29, 2010

The most wanted Service Pack

Today, some Eurobricks members started to report they have received the Service Pack to fix their 8043 Excavator problems.

The Service Pack includes:

  • 4 new Linear Actuators.
  • A set of smaller parts (4) to fix the right track problem, consisting of:
    • 1x Axle and Pin Connector Perpendicular 3L with Center Pin Hole (32184).
    • 2x Axle Pin with Friction Ridges Lengthwise (43093).
    • 1x Axle 3 with Stud (6587).
  • Revised building instructions pages (41 and 45) from book 1.

As previously explained [1] the new LAs have an identical look to their predecessors, but could be distinguished by their new production code, located just below the orange cross hole.
According to the reported case, the code is 36X0. However I might check if this is an unique code (have my doubts), or if it will change over time as new production batches take place.

The new LAs and modification, are reported to be effective. Lower friction LAs, smoother and faster boom lift, and no more problems driving tracks.

Questions about the new LA design remain. What was changed? Has the internal screw pitch changed (meaning number of turns to run the full course)? Did the internal clutch suffered any changes? Does rod bends less when fully extended?
It should not take too long, until we get answers for at least some of these questions.

The main difficulty seems to be applying the track modifications, if you have the model previously built, as there aren't specific instructions to do it. It wouldn't be easy to the probably without dismantling a significant part of the model. As this is a building toy, it shouldn't be a problem however...

So it looks, soon we all be able to play and joy with the renewed beauty again.
In the country where I live, the new 8043 boxes are expected to arrive at stores in the middle of October.


Ninsei said...

How exactly can one ask for service pack? I've bought 8043 couple of weeks ago, and would like to ask for service pack (mainly because of revised LAs), I've tried to contact with Lego Customer Service (using email form), but with no answer... At least not yet.

TechnicBRICKs said...


Maybe a phone call turns to be more effective.
Guess you might have a free access number, for your country.

Mortymore said...

More images @ BS

Jetro said...

I'm not so very happy with the fact that it appears quite difficult to distinguish the 'old' from the 'new' :(

Alex Campos said...

I suppose their differences are like those between the two models of 9V geared motor: subtle yet present for those for whom they matter.

Anonymous said...

Im going to put a small dot on it with a sharpie when I get mine in the mail. Phil

Anonymous said...

@Jetro,@AVCampos: LEGO did the same with the defective PF IR Receivers recently. Corrected them and kept the new ones with the same appearance of the defective ones... the only difference is that the LED blinks shortly when the device is turned on.

TechnicBRICKs said...

The PF IR Receivers were not exactly defective.

As far as I remember there was a correction for one mode, never used by LEGO so far, and also an HW revision to include new features (additional working modes).

Daniel said...

I have the service bag.

The only number I can see written on the LA is '61927', but this is also written on the older LAs!

I have dismantled and compared an old and a new LA.

The new LA still takes the same number of rotations to extend. It still extends to the same length. There is still a clutch.

I have cut the white plastic sleeves into pieces to look at their teeth, and from what I can see, the sleeve is identical on both LAs.

The 'tooth' of the worm gear in the new LA is significantly smaller:


Performance changes:
-the new LA rattles less when extending/retracting
-the new LA is quieter
-the new LA extends/retracts more smoothly, especially at high speed

Because the new LA has a thinner 'tooth', the new LA bends more when fully extended:


TechnicBRICKs said...

Thanks Daniel!

This is really interesting.
From the 1st photo, it seems there is also some grease on the screw from the new LA.
But I guess it might be some lightning effect.

I think it deserves a post of its own.
Could I use your photos ant comments to write such post?


Daniel said...

Yes, you can use my photos and comments.

Daniel said...

I forgot to mention - there is a lot of grease in the new LA.

Was there any grease on the screw of the older LA? I did not get chance to check this myself, because I was trying each LA's screw in the other LA's sleeve (to check that the sleeves were the same), so the grease got mixed between the two sleeves.

Meanwhile I have posted this on eurobricks, along with two extra pictures showing the parts of the new LA which have the most grease.

TechnicBRICKs said...

The original LA that I've opened two years ago, did have any grease inside.
Don't know for those produced in between, but likely they haven't too.

Hopefully, I'll find sometime today, to write the post. :|

TechnicBRICKs said...

Did it, finally!... :)

Tropy said...

@ conchas
Could you please publish the instruction sheet inside the service pack? on the official web site TLC there isn't yet the book 1 of 8043.

Jetro said...

@Max You can see the instructions in this brickshelf gallery

Related Posts Plugin for WordPress, Blogger...

© 2007-2014 TechnicBRICKs
TechnicBRICKs contents may be sporadically updated, if the authors finds further relevant info about a certain post, or content/spell mistakes. Hence please don't be surprised if you find few changes at later visits, relative to a previous read.

TechnicBRICKs often shows other peoples' creations and/or images. We always try to credit the author(s) and link to their main publishing website, and if possible with their name in real life.
Since this is not always possible, we request that if you find something here that is yours or from someone you know, you leave a comment on the respective post and claim the authorship.

TechnicBRICKs is optimized for Firefox 16.0 and 1600x1200 resolution displays or wider.

LEGO® is a trademark of The LEGO Group of companies which does not sponsor, authorize or endorse this blog.
LEGO, the LEGO logo, the Brick and Knob configurations, the Minifigure and MINDSTORMS, are registered trademarks of The LEGO Group.
Original LEGO images are copyrighted by The LEGO Group and are used here in accordance with their fair play policy.
You can visit the official LEGO® website at