Firewall crack repair
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8475
- Posts: 63
- Joined: Sun May 26, 2019 11:38 am
- Name: Dave Sprinkle
- Location: SF Bay
- Aircraft Type: 140
- Occupation-Interests: Engineer
- Contact:
Firewall crack repair
I noted that my firewall was cracking at the starter cable pass-through.
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- N76415 firewall cracks.jpg (62.52 KiB) Viewed 1250 times
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8475
- Posts: 63
- Joined: Sun May 26, 2019 11:38 am
- Name: Dave Sprinkle
- Location: SF Bay
- Aircraft Type: 140
- Occupation-Interests: Engineer
- Contact:
Re: Firewall crack repair
I cut out the cracked section.
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- N76415 firewall cracks removed.jpg (66.95 KiB) Viewed 1249 times
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8475
- Posts: 63
- Joined: Sun May 26, 2019 11:38 am
- Name: Dave Sprinkle
- Location: SF Bay
- Aircraft Type: 140
- Occupation-Interests: Engineer
- Contact:
Re: Firewall crack repair
I added a patch to cover the damaged section. Also added a couple of spherical "eyeball" fittings to support the penetrations of the other cables (mixture, throttle, oil temp, tach).
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- N76415 firewall patch and cable fittings.jpg (79.64 KiB) Viewed 1248 times
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8475
- Posts: 63
- Joined: Sun May 26, 2019 11:38 am
- Name: Dave Sprinkle
- Location: SF Bay
- Aircraft Type: 140
- Occupation-Interests: Engineer
- Contact:
Re: Firewall crack repair
Here's a close-up of the spherical cable fittings These are made by DoubleTee. I had these custom drilled to support two pass-throughs each. I highly recommend these.
https://www.firewallfittings.com/product/ttp-s-custom/
https://www.firewallfittings.com/product/ttp-s-custom/
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- N76415 firewall cable fittings.jpg (56.14 KiB) Viewed 1248 times
Last edited by 8475 on Tue Sep 24, 2024 11:39 am, edited 1 time in total.
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8475
- Posts: 63
- Joined: Sun May 26, 2019 11:38 am
- Name: Dave Sprinkle
- Location: SF Bay
- Aircraft Type: 140
- Occupation-Interests: Engineer
- Contact:
Re: Firewall crack repair
Here's a picture of the finished installation. Really pleased with how this turned out.
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- N76415 firewall cracks patched.jpg (116.55 KiB) Viewed 1248 times
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6643
- Posts: 2462
- 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
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6183
- Posts: 354
- Joined: Tue May 01, 2018 7:00 am
- Name: Mike Smith
- Location: Florida
- Aircraft Type: 140A (2) 1949 & 1950
- Occupation-Interests: Retired aerial power line patrol pilot for Gulf Power Co. CFIA, CFII, MEI
120-140 Assoc. Florida Rep. N9633A & N9688A - Contact: