As the title says, those long springs that keep your flaps neutral up behind the headliner have caused some grooves in the bellcrank. I read a possible repair using AN115-8 cable shackles, but at $15 a pop times 4 I thought I'd see if anyone had another acceptable repair. Something I need to address for next annual.
Illustration 49-7, part# 0411339 Bellcrank Assembly/Flap
C-140 Flap bellcrank wear at spring connnection
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C-140 Flap bellcrank wear at spring connnection
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- Cessna 140 Flap Spring and Bell Crank Repair.pdf
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- Name: Mac Forbes
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Re: C-140 Flap bellcrank wear at spring connnection
Dave, I think it may have been John Cooper who suggested that maybe welding up the area and re-drilling holes might be an acceptable repair(?) and alternative to David Owen's neat fix and excellent write-up. If I'm seeing it correctly, though, and if the springs are also worn, the addition of the cable shackles may provide a bit of tolerence for shortening/re-arching the springs, 'though minor spring length adjustment may not be critical(?). Aircraft parts and pieces seem to always even out pace runaway inflation, don't they!?
Mac
Mac
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Re: C-140 Flap bellcrank wear at spring connnection
How about tailwheel spring clips, $3.95 each?
John Cooper
www.skyportservices.net
www.skyportservices.net
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Re: C-140 Flap bellcrank wear at spring connnection
On my way to the hangar now to investigate, very clever!How about tailwheel spring clips, $3.95 each?
Mac, yes, I will check the spring ends, if I find some wear then yes we'll 'adjust' them. I suspect if I use the spring clips I'd have to shorten the springs anyway. Thanks all!