Leaking Wing Fuel Sump Replacement

Ask Questions and Offer Advice Related to the Cessna 120 & 140 Type
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.
Post Reply
vindio
Posts: 33
Joined: Wed Nov 29, 2023 5:19 pm
Name:
Location: PA
Aircraft Type: C120
Occupation-Interests:
Contact:

Leaking Wing Fuel Sump Replacement

Post by vindio »

Our 1947 120 has developed a pretty constant ( 1 drop every few seconds) leak on one of the wing fuel sumps. I could make out “CAV -170” so I’m going to order two from aircraft spruce. Just wondering about the process to replace these sumps, is it just a matter of draining the tank and then replacing?



https://www.aircraftspruce.com/catalog/ ... NnCRloG1X2
Attachments
IMG_4154.jpeg
IMG_4154.jpeg (56.81 KiB) Viewed 95 times
IMG_4153.jpeg
IMG_4153.jpeg (50.87 KiB) Viewed 95 times
User avatar
6643
Posts: 2656
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: Leaking Wing Fuel Sump Replacement

Post by 6643 »

Did you try new o-rings? Much less expensive.

Yes, drain the tank, cut the safety wire, unscrew the valve. Installation is the reverse.
Post Reply