How to get the main shock donuts in

[bruce_m20e]

So just got the plane and doing its first annual, there were a lot of issues with it, but i digress

The one I am addressing with my mechanic now is the shocks, got all new donuts to replace the original five donut configuration.  Jacked up the plane and removed the old ones, but now, the new ones, cant compress enough to put the bolt back through the shaft...  I have all my weight on the wing tip and still cant get it in...

[ArtVandelay]

There’s special tools required…you do have the maintenance manual?

[bruce_m20e]

29 minutes ago, ArtVandelay said:

There’s special tools required…you do have the maintenance manual?

I do

 

[Hank]

If you're changing from the old-style 5 donuts to 4, there's more parts to replace.

[PT20J]

Wow. I don't think the shock disks for the 5-disk configuration have been available for over 50 years!!

Check out SBM20-139A. https://www.mooney.com/wp-content/uploads/2020/12/SBM20-139A.pdf

And, you need the tool: https://www.knr-inc.com/products-list.html?view=article&id=133:knr-tools-mooney-landing-gear&catid=87:tools

Skip

[Andy95W]

7 minutes ago, Hank said:

If you're changing from the old-style 5 donuts to 4, there's more parts to replace.

Hank’s right.  If you are converting from the original shock discs to the Lord, you will have to get the parts listed in the service bulletin.  You will have to contact a place like Don Maxwell, or perhaps @Alan Fox has the salvage parts available.

https://www.mooney.com/wp-content/uploads/2020/12/SBM20-139A.pdf

[ArtVandelay]

I do
 

The maintenance manual (at least the J does) has description of the special tools required.

[Utah20Gflyer]

When my mechanic replaced my main shock disks he used a ratchet strap to compress the disks enough to put the hardware back on.  He removed the landing gear from the plane which might be a factor in using this method. 

[Alan Fox]

22 hours ago, bruce_m20e said:

So just got the plane and doing its first annual, there were a lot of issues with it, but i digress

The one I am addressing with my mechanic now is the shocks, got all new donuts to replace the original five donut configuration.  Jacked up the plane and removed the old ones, but now, the new ones, cant compress enough to put the bolt back through the shaft...  I have all my weight on the wing tip and still cant get it in...

I have the stack tibes , to convert it