Removing intercoolers for spark plug work

[dkkim73]

Does anyone have any advice on getting access for upper spark plug work on the TSIO-550? 

It seems that one must remove the intercoolers and possibly associated mounts and baffles to get access to upper plugs. 

Getting some rough running and thinking of checking all the plugs. 

Thanks,

David

 

[exM20K]

I don’t recall any issues getting at them the last time I did a borescope inspection. Definitely didn’t remove the intercooler.

-dan

[LANCECASPER]

1 hour ago, dkkim73 said:

Does anyone have any advice on getting access for upper spark plug work on the TSIO-550? 

It seems that one must remove the intercoolers and possibly associated mounts and baffles to get access to upper plugs. 

Getting some rough running and thinking of checking all the plugs. 

Thanks,

David

 

I had to remove the intercoolers to replace the top plugs.

[M20TN_Driver]

I am pretty sure I had to remove the intercooler to get to them.  I had the shop install screws that you can access from the TOP of the intercooler so that it is a much easier job moving forward.  Def have to take it off to get to the injectors...

[dkkim73]

Any basic info on removing them? There are hose-clamp fittings on the ends and screws attaching them to a bracket/baffle. The whole system has some rigidity, so curious where you just need to apply brutane (ie. bend the hoses a bit to disengaged) and where there might be a hidden point that needs to be unscrewed or relieved. Do you have to remove the hoses from the other ends, etc. 

Interestingly, the PDF manuals I have don't provide much specificity. 

 

[LANCECASPER]

7 hours ago, dkkim73 said:

Any basic info on removing them? There are hose-clamp fittings on the ends and screws attaching them to a bracket/baffle. The whole system has some rigidity, so curious where you just need to apply brutane (ie. bend the hoses a bit to disengaged) and where there might be a hidden point that needs to be unscrewed or relieved. Do you have to remove the hoses from the other ends, etc. 

Interestingly, the PDF manuals I have don't provide much specificity. 

 

Brian Kendrick came to my hangar and did the top plugs since he was going to do some other things as well. It’s tedious getting to all of the hardware on the intercoolers and much more tedious putting it back together. If you’ve never done it before I’d let someone who has done it do it the first time at least. Not a bad idea to have some of the extra hardware called out in the parts manual for the intercoolers.

[dkkim73]

4 hours ago, LANCECASPER said:

5 hours ago, dkkim73 said:

 

Brian Kendrick came to my hangar

 

[M20TN_Driver]

On 8/31/2024 at 8:48 AM, dkkim73 said:

Any basic info on removing them? There are hose-clamp fittings on the ends and screws attaching them to a bracket/baffle. The whole system has some rigidity, so curious where you just need to apply brutane (ie. bend the hoses a bit to disengaged) and where there might be a hidden point that needs to be unscrewed or relieved. Do you have to remove the hoses from the other ends, etc. 

Interestingly, the PDF manuals I have don't provide much specificity. 

 

I did them myself first time.  Its not difficult work, but as the other posts indicate it can be tedious.  The hoses also can be sticky to pull off the hardware if this is the first time they are coming off.  Just take your time and have patience.  The intercoolers also have relatively thin flanges on the base for mounting hardware--be sure to carefully ease them out of place so you don't bend those.