Cylinder removal problem
Moderators: GAHorn, Karl Towle, Bruce Fenstermacher
- rupertjl
- Posts: 384
- Joined: Thu Jun 17, 2004 5:29 pm
Cylinder removal problem
We have to take the #5 cylinder off due to low compression this annual. All the cylinder nuts came off easily except the top left nut looking at the #5 cylinder. It looks like the stud left loose because I can see the stud turn with nut but I cannot thread it out, or even pull it off assuming a cracked stud. Has anyone ever experienced this? The stud has a through hole on it and I can put a punch through it and turn the nut on the stud but now it is up to the pin and I can't remove it any further. It was getting late and dark so I quit for the evening instead of fighting with it too much, any insight would be greatly appreciated.
I looked at the overhaul manual and parts list, it lists all the bigger studs at 7/16 studs so the manuals says it shouldn't be different.
I looked at the overhaul manual and parts list, it lists all the bigger studs at 7/16 studs so the manuals says it shouldn't be different.
1950 170A: N9191A s/n 19366
- mit
- Posts: 1067
- Joined: Wed May 01, 2002 1:54 am
Re: Cylinder removal problem
It is a thur bolt. Read the manual again, look at the opposit side and hold the nut on that side.
Tim
- blueldr
- Posts: 4442
- Joined: Thu May 02, 2002 3:16 am
Re: Cylinder removal problem
Sounds as though someone may be be getting involved a bit above their understanding of that engine.
BL
- rupertjl
- Posts: 384
- Joined: Thu Jun 17, 2004 5:29 pm
Re: Cylinder removal problem
thanks guys, it hit me last night too...
Blueldr-rest assured I'm not doing this without my IA, he just decided to go eat dinner and I was more worried about what I'd find when the cylinder came off...
Blueldr-rest assured I'm not doing this without my IA, he just decided to go eat dinner and I was more worried about what I'd find when the cylinder came off...
1950 170A: N9191A s/n 19366
- Bruce Fenstermacher
- Posts: 10427
- Joined: Tue Apr 23, 2002 11:24 am
Re: Cylinder removal problem
Oh nuts Judd.
BL in this case your observation leaves me chuckle. Judd may have had a temporary brain fart but besides his IA he is surrounded by people who know aircraft engines believe me. Though they might be the "L" type.

BL in this case your observation leaves me chuckle. Judd may have had a temporary brain fart but besides his IA he is surrounded by people who know aircraft engines believe me. Though they might be the "L" type.

CAUTION - My forum posts may be worth what you paid for them!
Bruce Fenstermacher, Past President, TIC170A
Email: brucefenster at gmail.com
Bruce Fenstermacher, Past President, TIC170A
Email: brucefenster at gmail.com
- rupertjl
- Posts: 384
- Joined: Thu Jun 17, 2004 5:29 pm
Re: Cylinder removal problem
Yea too bad I don't have the 180 HP covnersion, parts would be a lot easier for me to "procure"
1950 170A: N9191A s/n 19366
-
- Posts: 449
- Joined: Mon Dec 13, 2010 3:49 am
Re: Cylinder removal problem
Boy I am picking up a lot of things on this thread I had not realized. "covnersion" made me look at the BL for blueldr. I always thought it was a split word with the first word ending at the "u"




It's not done till it's overdone
- GAHorn
- Posts: 21309
- Joined: Fri Apr 12, 2002 8:45 pm
Re: Cylinder removal problem
marathonrunner wrote:Boy I am picking up a lot of things on this thread I had not realized. "covnersion" made me look at the BL for blueldr. I always thought it was a split word with the first word ending at the "u"![]()
![]()
THUR you off, did it?

'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.

- blueldr
- Posts: 4442
- Joined: Thu May 02, 2002 3:16 am
Re: Cylinder removal problem
Re; "blueldr",
That moniker came about when there were three uf us in basically blue airplanes flying is loose formation to various fly ins. I was "blue leader" in deference to my advanced age and former military experience. I did the reporting to the air traffic control facilities as a flight of three and we usually landed in formation, runway width permitting.
In later years, some younger, wise-assed, Texan in the TIC170A, split that to "Blue Elder'. I guess I qualify-plus for the name since I'm now age ninety.
That moniker came about when there were three uf us in basically blue airplanes flying is loose formation to various fly ins. I was "blue leader" in deference to my advanced age and former military experience. I did the reporting to the air traffic control facilities as a flight of three and we usually landed in formation, runway width permitting.
In later years, some younger, wise-assed, Texan in the TIC170A, split that to "Blue Elder'. I guess I qualify-plus for the name since I'm now age ninety.
BL
- GAHorn
- Posts: 21309
- Joined: Fri Apr 12, 2002 8:45 pm
Re: Cylinder removal problem
That's "blu Eldr" .... 

'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.

- canav8
- Posts: 1006
- Joined: Thu Sep 25, 2008 2:34 pm
Re: Cylinder removal problem
Dont worry. What is amazing is there is a 90 year old computer literate amongst us. Thanks for being here. Dougblueldr wrote:Re; "blueldr",
That moniker came about when there were three uf us in basically blue airplanes flying is loose formation to various fly ins. I was "blue leader" in deference to my advanced age and former military experience. I did the reporting to the air traffic control facilities as a flight of three and we usually landed in formation, runway width permitting.
In later years, some younger, wise-assed, Texan in the TIC170A, split that to "Blue Elder'. I guess I qualify-plus for the name since I'm now age ninety.
52' C-170B N2713D Ser #25255
Doug
Doug
- n3833v
- Posts: 858
- Joined: Tue Apr 23, 2002 6:02 pm
Re: Cylinder removal problem
Age is nothing when you have health. Keep with it and all the advise. Thanks
John
John
John Hess
Past President 2018-2021
President 2016-2018, TIC170A
Vice President 2014-2016, TIC170A
Director 2005-2014, TIC170A
N3833V Flying for Fun
'67 XLH 900 Harley Sportster
EAA Chapter 390 Pres since 2006
K3KNT
Past President 2018-2021
President 2016-2018, TIC170A
Vice President 2014-2016, TIC170A
Director 2005-2014, TIC170A
N3833V Flying for Fun
'67 XLH 900 Harley Sportster
EAA Chapter 390 Pres since 2006
K3KNT
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