I have read the other posts for this job and getting ready for the last few steps. I am down to the strut and spar bolts.
One question that came up is the AN4 bolt on the flap torque tube and what happens internally with the springs and bell crank when tension is removed. At this point ,with help and proper force will the wing just slide outward and off ?
And what precautions if any for the tube and bell crank springs in the fuselage ?
Thanks.
Wing removal question.
Forum rules
You must be a member of the Cessna 120-140 Association in order to post new topics, reply to existing topics, or search for information on this forum. Use the "Join" link in the red menu bar.
You must be a member of the Cessna 120-140 Association in order to post new topics, reply to existing topics, or search for information on this forum. Use the "Join" link in the red menu bar.
-
redbud40
- Posts: 17
- Joined: Fri May 03, 2024 9:36 pm
- Name: Mike Robinson
- Location: Granbury Texas
- Aircraft Type: C-140,RV6A
- Occupation-Interests: Retired Military, Airline Pilot
High School Volunteer Aviation dept
CFII - Contact:
Wing removal question.
Last edited by redbud40 on Sun Jul 05, 2026 10:11 pm, edited 1 time in total.
- 6643
- Posts: 2744
- Joined: Tue May 01, 2018 7:00 am
- Name: John C
- Location: KLCI, NH
- Aircraft Type: 1946 C140/C90
- Occupation-Interests: A&P, semi-retired
- Contact:
Re: Wing removal question.
The flap torque tube will get pulled back to the rearmost part of the cutout in the skin. Don't let it snap back.
If I recall correctly (last time was many years ago) you have enough side to side movement to work it out once both sides are unbolted.
If I recall correctly (last time was many years ago) you have enough side to side movement to work it out once both sides are unbolted.
John Cooper
www.skyportservices.net
www.skyportservices.net
-
redbud40
- Posts: 17
- Joined: Fri May 03, 2024 9:36 pm
- Name: Mike Robinson
- Location: Granbury Texas
- Aircraft Type: C-140,RV6A
- Occupation-Interests: Retired Military, Airline Pilot
High School Volunteer Aviation dept
CFII - Contact:
Re: Wing removal question.
Thanks for info. Sounds like even though I am only removing the right wing I need to remove the AN bolt from both the L and R flap rods that are sticking into the torque tube.
- 6597
- Posts: 530
- Joined: Tue May 01, 2018 7:00 am
- Name: David Sbur
- Location: Vancouver WA KVUO
- Aircraft Type: '46 140 0-200A
- Occupation-Interests: Agriculture
- Contact:
Re: Wing removal question.
Just disconnect the springs from where they attach to the bulkhead so you don't have any tension on anything.
-
redbud40
- Posts: 17
- Joined: Fri May 03, 2024 9:36 pm
- Name: Mike Robinson
- Location: Granbury Texas
- Aircraft Type: C-140,RV6A
- Occupation-Interests: Retired Military, Airline Pilot
High School Volunteer Aviation dept
CFII - Contact:
Re: Wing removal question.
Thanks springs disconnected …easy peasy. Ready for bolt removal , replace with screw drivers then four guys hefting it out. Fingers crossed no glitches
- 6643
- Posts: 2744
- Joined: Tue May 01, 2018 7:00 am
- Name: John C
- Location: KLCI, NH
- Aircraft Type: 1946 C140/C90
- Occupation-Interests: A&P, semi-retired
- Contact:
Re: Wing removal question.
Don't allow the wing strut to pivot down on the bolt at the gear box. There isn't enough clearance at the fuselage skin to allow it to reach the ground!
Don't forget to run strings through the wings to pull the control cables back in!
Don't forget to run strings through the wings to pull the control cables back in!
John Cooper
www.skyportservices.net
www.skyportservices.net