HVAC control cables
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Trailering
Joined: May 2015
Posts: 20
Likes: 0
From: Pasadena, TX
HVAC control cables
I recently purchased a project 76 F250 with factory installed A/C, & I'm in the process of restoring the HVAC system. The vacuum switches for temperature & mode control are both broken, & I'm ordering new ones from LMC. However, on the same page in LMC's catalog, I see something that I don't see on my truck. In addition to the cable that goes to the temperature control door, which I do have, they show a second cable that they call "Cable Assembly - Air," which I cannot find on my truck. It's item 14 on this link: Truck Parts and Truck Accessories
The mode door & the recirculating door are both vacuum controlled. So I'm not sure what this second cable is for or even if I'm supposed to have it. If any of you could provide some insight, I'd appreciate it.
The mode door & the recirculating door are both vacuum controlled. So I'm not sure what this second cable is for or even if I'm supposed to have it. If any of you could provide some insight, I'd appreciate it.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 783
From: Simi Valley, CA
I recently purchased a project 76 F250 with factory installed A/C, & I'm in the process of restoring the HVAC system. The vacuum switches for temperature & mode control are both broken, & I'm ordering new ones from LMC. However, on the same page in LMC's catalog, I see something that I don't see on my truck. In addition to the cable that goes to the temperature control door, which I do have, they show a second cable that they call "Cable Assembly - Air," which I cannot find on my truck. It's item 14 on this link: Truck Parts and Truck Accessories
The mode door & the recirculating door are both vacuum controlled. So I'm not sure what this second cable is for or even if I'm supposed to have it. If any of you could provide some insight, I'd appreciate it.
The mode door & the recirculating door are both vacuum controlled. So I'm not sure what this second cable is for or even if I'm supposed to have it. If any of you could provide some insight, I'd appreciate it.
D3TZ-18518-A .. A/C Regulator Cable - 1973/79 F100/350 & 1978/79 Bronco with factory installed integral A/C // 1978/79 F100/350 & Bronco with Hi/Lo Comfort Vent System / Obsolete
Lead Driver
Joined: Nov 2000
Posts: 6,619
Likes: 340
From: Albuquerque
vacuu switch assembly
I'm not sure on this but there may be a difference in the vacuum selector switch . I think something may have changed in midyear 1977. Mine doesn't operate the vacuum motor doors in proper sequence.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 783
From: Simi Valley, CA
D5TZ-19B888-A (replaced D3TZ-19B888-B) .. A/C Vacuum Controlled Selector Valve Assy - Includes the "kicker switch" for the A/C (Motorcraft YH-285) / Obsolete
1973/79 F100/350 & 1978/79 Bronco with factory installed integral A/C
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