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-   -   Lycoming SB 632 7/17/2017 (https://vansairforce.net/community/showthread.php?t=151506)

Apexeon 07-18-2017 06:47 AM

Lycoming SB 632 7/17/2017
 
I just saw this on a facebook post. Going to read the entire SB then try to track down serial numbers for my rods that were installed a couple of years ago during my OH to see if I have to do this. This could be a huge expense for some Lycoming owners.

EDIT: Looks like my engine won't be affected as my rods were shipped in 2014, before the specified time period.

http://www.lycoming.com/sites/defaul...0Removal_0.pdf

johngoodman 07-18-2017 07:18 AM

Yup, our engine is on there. In fact, I'd say if you bought a Lyc in the past year, you're on there.
John

airguy 07-18-2017 07:53 AM

Yeesshhh.... this one might get ugly.

tspear 07-18-2017 08:04 AM

Quote:

Originally Posted by airguy (Post 1188792)
Yeesshhh.... this one might get ugly.

I have not read in detail many Lycoming SBs. What I find interesting on this one is the warranty information is front and center, I have never seen the warranty information so prominently displayed before.

Tim

airguy 07-18-2017 09:09 AM

Quote:

Originally Posted by tspear (Post 1188797)
I have not read in detail many Lycoming SBs. What I find interesting on this one is the warranty information is front and center, I have never seen the warranty information so prominently displayed before.

Tim

That, and the time of compliance within next 10 hours to inspect....

Lycoming must realize they really stepped in something here - curious to hear the backstory on this one. At least its a relatively small time window for production.

My engine is not on the applicable list, I dodged this bullet.

boom3 07-18-2017 09:21 AM

Big bummer. I'm always amazed when something like this comes up as the engines really haven't changed since the 50's.

Have they ever been perfect or does one SB eventually just create another down the road after material and or procedures change? I'm guessing it is always work in progress after looking at the 74 pages of Service Bulletins Letters and Instructions.

Wow, tough business...

airguy 07-18-2017 09:35 AM

Can you replace the con-rods and bearings without splitting the case? Doesn't look practical to me but I've never opened an engine either. This looks like a pretty invasive fix to a nearly new engine.

Bavafa 07-18-2017 09:47 AM

I didn't see a date for the engine/parts shipped but checked my S/N and luckily I am not affected

SkyFlorida 07-18-2017 09:47 AM

Got my engine through Van's at SnF 2016. Still in box.

And it's on the SB list.

Kyle Boatright 07-18-2017 09:52 AM

Quote:

Originally Posted by airguy (Post 1188835)
Can you replace the con-rods and bearings without splitting the case? Doesn't look practical to me but I've never opened an engine either. This looks like a pretty invasive fix to a nearly new engine.

It is invasive but can be done.


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