Answers.Body: <p>It's structural, but not really mandatory:</p>
  
  <p><img src="https://i.sstatic.net/qEKn5.jpg" alt="enter image description here"></p>
  
  <p>The full (4 pages) instruction can be found by googling or e.g. there: <a href="http://lego.brickinstructions.com/lego_instructions/set/6847/Space_Dozer" rel="nofollow noreferrer">http://lego.brickinstructions.com/lego_instructions/set/6847/Space_Dozer</a></p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2013-12-29T20:12:53.897Z
Answers.Text: Well, it's not really of structural importance, as the 4 x 6 plate in step 2 holds them together. I had the scanned instructions already, but was wondering if on the box, any of the alternative builds sometimes pictured used it.
Answers.UserDisplayName: Reven
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2013-12-29T23:15:20.630Z
Answers.Text: Well, it will, to some degree, keep the 1x6 technic beams from coming off the plate above when too much pressure is applied from above. Without that axle, I see the 1x6's coming off all too easily.
Answers.UserDisplayName: gev
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2013-12-31T22:49:39.367Z
Answers.Text: if they'd put a plate under those beams to keep them in place the vehicle would have no ground clearance (or possibly negative clearance). You could always build it and find out...
Answers.UserDisplayName: Móż
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2013-12-29T13:59:17.877Z
Answers.LastActivityDate: 2013-12-29T13:59:17.877Z
Answers.UserDisplayName: Stephane Delcroix
Answers.Body: <p>When weight is applied on the structure, the wheels are are creating a twisting motion that will eventually dissasemble the 1x6 beams.</p>
  
  <p><img src="https://i.sstatic.net/s3AIR.jpg" alt="enter image description here"></p>
  
  <p>With the extra structural part when a load is applied there is a lot of flexing but the 1x6 beams are staying in place. </p>
  
  <p><img src="https://i.sstatic.net/CWMTk.jpg" alt="enter image description here"></p>
  
  <p>Effectively, the axle is preventing the beams from rotating out of place.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-01-02T07:42:11.147Z
Answers.Text: Yay for Science! Nothing like the experimental approach. :)
Answers.UserDisplayName: Reven
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-01-01T16:52:56.717Z
Answers.LastActivityDate: 2014-01-01T16:52:56.717Z
Answers.UserDisplayName: pcantin
Body: <p>In set 6847 (Space Dozer, <a href="http://www.peeron.com/inv/sets/6847-1" rel="nofollow">http://www.peeron.com/inv/sets/6847-1</a>) there is a black Technic Axle 6 that has no structural or cosmetic function in the set. I don't have the original instructions or box, so it might have been included to build one of the alternate sets. Or some other reason?</p>
  
Tags: <building><piece-information>
Title: What is the purpose of the Technic Axle 6 in set 6847?
UserDisplayName: Reven
ThreadText: # What is the purpose of the Technic Axle 6 in set 6847?
  
  (Asked by: username_0 on 2013-12-29)
  
  In set 6847 (Space Dozer, <http://www.peeron.com/inv/sets/6847-1>) there is a black Technic Axle 6 that has no structural or cosmetic function in the set. I don't have the original instructions or box, so it might have been included to build one of the alternate sets. Or some other reason?
  
  **Tags:** building, piece-information
  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_1 on 2013-12-29. Score: 4 | Accepted answer
  
  It's structural, but not really mandatory:
  
  ![enter image description here](https://i.sstatic.net/qEKn5.jpg)
  
  The full (4 pages) instruction can be found by googling or e.g. there: <http://lego.brickinstructions.com/lego_instructions/set/6847/Space_Dozer>
  
  > **Comments:**
  > **username_0**: Well, it's not really of structural importance, as the 4 x 6 plate in step 2 holds them together. I had the scanned instructions already, but was wondering if on the box, any of the alternative builds sometimes pictured used it.  
  > **username_2**: Well, it will, to some degree, keep the 1x6 technic beams from coming off the plate above when too much pressure is applied from above. Without that axle, I see the 1x6's coming off all too easily.  
  > **username_3**: if they'd put a plate under those beams to keep them in place the vehicle would have no ground clearance (or possibly negative clearance). You could always build it and find out...  
  
  ---
  
  ### Answer by username_4 on 2014-01-01. Score: 8
  
  When weight is applied on the structure, the wheels are are creating a twisting motion that will eventually dissasemble the 1x6 beams.
  
  ![enter image description here](https://i.sstatic.net/s3AIR.jpg)
  
  With the extra structural part when a load is applied there is a lot of flexing but the 1x6 beams are staying in place.
  
  ![enter image description here](https://i.sstatic.net/CWMTk.jpg)
  
  Effectively, the axle is preventing the beams from rotating out of place.
  
  > **Comments:**
  > **username_0**: Yay for Science! Nothing like the experimental approach. :)  
  
  ---
  
  