Cabin Heat Valve (on the firewall)

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: 14
Joined: Wed Nov 29, 2023 5:19 pm
Name:
Location: PA
Aircraft Type: C120
Occupation-Interests:
Contact:

Cabin Heat Valve (on the firewall)

Post by vindio »

'47 C-120 (C90)

When we pull the cabin heat knob all the way out (full heat), the knob gets stuck in the full open position (can't push it back in). I've noticed that if I open the cowling, and manually slide open the top hatch of the heat valve with my hand (see picture), the knob goes back to the closed position.

Is this valve something that can be lubricated/refurbished?

If not, does anybody have a part # for it? My searches have come back empty so far.

Thanks!
Attachments
Cabin Heat Valve Cessna 120.jpg
Cabin Heat Valve Cessna 120.jpg (53.64 KiB) Viewed 1282 times
User avatar
6597
Posts: 377
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: Cabin Heat Valve (on the firewall)

Post by 6597 »

If I recall, it's simple to take off and clean/lube. Disconnect the wire. Pretty simple device. Lube the cable while you are at it. Probably hasn't been done since new....
heater.jpeg
heater.jpeg (21.77 KiB) Viewed 1260 times
Post Reply