Can someone chime in and verify the difference between the vacuum and electric trunk release. Does the vacuum one on 67 Eldorado Fleetwood only pop the trunk and does not pull it down? This is my vacuum release.
Thanks,
Hi Dennis,
Those are actually two different options, a trunk release solenoid, either vacuum or electric, and a trunk pull down unit, which has always been electric as far as I know. My 56 has electric for both, but I do think they tried a vacuum release unit, but I honestly don't know when or for how long.
I hope this has been helpful.
Rick
Only the RELEASE is vacuum-operated in 1967 and 1968. The vacuum cylinder and push-button in your set-up are vacuum. They were replaced by an electric switch and release in 1969-70. All the rest is the same.
The pull-down is separate and independent from the release and is MECHANICALLY OPERATED. No electric or vacuum is involved in the operation of the pull-down. An electric switch and wire operate the TRUNK lamp on the dash. Your pull-down mechanism fits 1967-70 inclusive.
Early trunk pull-downs, think 1955-58, were electrically operated motors. They became electric again in the mid '70s. But the unit you have, which fits 1967-70, is MECHANICAL. There is no electric or vacuum motor involved.
Charles Fares
Thanks Charles for your explanation. So the unit I have does both functions? Will a later electric unit fit into a 67 Eldorado?
Thanks.
A 1969-1970 electric release solenoid with integral latch, together with the electric push-button, and the interconnecting wiring harness from a 1969-70, will work in a 1967-68 Eldorado in place of the factory vacuum switch and vacuum solenoid.
Charles Fares
Quote from: Cadillac Fleetwood on September 05, 2021, 12:47:37 AM
Only the RELEASE is vacuum-operated in 1967 and 1968. The vacuum cylinder and push-button in your set-up are vacuum. They were replaced by an electric switch and release in 1969-70. All the rest is the same.
The pull-down is separate and independent from the release and is MECHANICALLY OPERATED. No electric or vacuum is involved in the operation of the pull-down. An electric switch and wire operate the TRUNK lamp on the dash. Your pull-down mechanism fits 1967-70 inclusive.
Early trunk pull-downs, think 1955-58, were electrically operated motors. They became electric again in the mid '70s. But the unit you have, which fits 1967-70, is MECHANICAL. There is no electric or vacuum motor involved.
Charles Fares
Charles,
How did the mechanical pull down unit operate then? Was it spring loaded somehow, or was there another method used?
I apologize, I guess I was mistakenly under the impression that the pull-down units were all electric from the beginning, as my 56 is, and the 77. However the 77 has a cable driven unit from a remote mounted motor instead of a direct drive right on the motor itself like the 56.
The other years that I have had in-between didn't have that option on them, so I didn't know what they could have had available, thus my ignorance on what was used.
Rick
The pull-down assembly at the rear of the trunk is spring-loaded. Fully raising the lid, and then lowering it to a near-closed position, i.e. 7/8", sets or "cocks" the unit to commence the pull-down.
At the right trunk hinge are three other parts to the system: a roller with a rubber wheel, a metal track with detents in which the roller rolls, and a hydraulic cylinder.
The bowden-type sheathed cable connects the lower end of the hydraulic cylinder to the trunk pull-down. The hydraulic cylinder contains a spring, and an orifice through which fluid passes and acts to smooth out the pull-down as the cable pulls on the spring-loaded pull-down assembly. Tension on the cable causes the pull-down to operate an bring the lid to a fuly-closed position,
Charles Fares
Quote from: Cadillac Fleetwood on September 05, 2021, 02:27:20 PM
The pull-down assembly at the rear of the trunk is spring-loaded. Fully raising the lid, and then lowering it to a near-closed position, i.e. 7/8", sets or "cocks" the unit to commence the pull-down.
At the right trunk hinge are three other parts to the system: a roller with a rubber wheel, a metal track with detents in which the roller rolls, and a hydraulic cylinder.
The bowden-type sheathed cable connects the lower end of the hydraulic cylinder to the trunk pull-down. The hydraulic cylinder contains a spring, and an orifice through which fluid passes and acts to smooth out the pull-down as the cable pulls on the spring-loaded pull-down assembly. Tension on the cable causes the pull-down to operate an bring the lid to a fuly-closed position,
Charles Fares
[/quote
l believe there's also a guide for the cable on the deck lid.
Guys, I think what started this whole discussion was Dennis was selling a power trunk conversion. No matter if the release is vacuum or electric, he needs this part I've pictured. Dennis, if you don't have this part, feel free to contact me directly.
Bob
Quote from: Bob Hoffmann CLC#96 on September 05, 2021, 07:34:45 PM
Guys, I think what started this whole discussion was Dennis was selling a power trunk conversion. No matter if the release is vacuum or electric, he needs this part I've pictured. Dennis, if you don't have this part, feel free to contact me directly.
Bob
Bob, you are correct. You asked the question about drilling out the welds for this part early on in the ad posting. It became clear from subsequent posts that the Dennis had not done so, with the consequence that the welded-on mounting bracket was not present.
I have been discussing this trunk pull-down with a prospective purchaser for Dennis' parts, and our conversation, among other things, gravitated to the lack of this bracket. I told the prospective purchaser that I would try to find a photo or illustration of same, such as from a Fisher Body manual. But you have already done me an inestimable service by posting your photo, and for that I thank you most appreciatively. A photo is worth 1,000 words, as they say!
Charles Fares
Quote from: Bob Hoffmann CLC#96 on September 05, 2021, 07:34:45 PM
Guys, I think what started this whole discussion was Dennis was selling a power trunk conversion. No matter if the release is vacuum or electric, he needs this part I've pictured. Dennis, if you don't have this part, feel free to contact me directly.
Bob
Yes you are correct Bob!
Thanks Charles
Quote from: Cadillac Fleetwood on September 05, 2021, 08:14:39 PM
Bob, you are correct. You asked the question about drilling out the welds for this part early on in the ad posting. It became clear from subsequent posts that the Dennis had not done so, with the consequence that the welded-on mounting bracket was not present.
I have been discussing this trunk pull-down with a prospective purchaser for Dennis' parts, and our conversation, among other things, gravitated to the lack of this bracket. I told the prospective purchaser that I would try to find a photo or illustration of same, such as from a Fisher Body manual. But you have already done me an inestimable service by posting your photo, and for that I thank you most appreciatively. A photo is worth 1,000 words, as they say!
Charles Fares
Bob what I am not understanding is why would this bracket or what ever it is not already be on the car? Wouldn't it be a straight swap if the 67 Eldorado and the car it is going into is a 67 Eldorado? Wouldn't GM have made one trunk lid with everything and just add the options?
Quote from: Bob Hoffmann CLC#96 on September 05, 2021, 07:34:45 PM
Guys, I think what started this whole discussion was Dennis was selling a power trunk conversion. No matter if the release is vacuum or electric, he needs this part I've pictured. Dennis, if you don't have this part, feel free to contact me directly.
Bob
That's exactly why this forum is so helpful, saves a lot of headaches, time and frustration.
Quote from: Cadman-iac on September 05, 2021, 06:50:32 AM
Charles,
How did the mechanical pull down unit operate then? Was it spring loaded somehow, or was there another method used?
I apologize, I guess I was mistakenly under the impression that the pull-down units were all electric from the beginning, as my 56 is, and the 77. However the 77 has a cable driven unit from a remote mounted motor instead of a direct drive right on the motor itself like the 56.
The other years that I have had in-between didn't have that option on them, so I didn't know what they could have had available, thus my ignorance on what was used.
Rick
Quote from: dennisspeaks on September 06, 2021, 02:09:43 PM
Bob what I am not understanding is why would this bracket or what ever it is not already be on the car? Wouldn't it be a straight swap if the 67 Eldorado and the car it is going into is a 67 Eldorado? Wouldn't GM have made one trunk lid with everything and just add the options?
The bracket was part of the option and the body was fitted only if the option was selected. Only the pull down feature equipped vehicles will have this correct bracket.
The mechanical cable pull down was first offered in 1962
Quote from: Bob Hoffmann CLC#96 on September 05, 2021, 07:34:45 PM
Guys, I think what started this whole discussion was Dennis was selling a power trunk conversion. No matter if the release is vacuum or electric, he needs this part I've pictured. Dennis, if you don't have this part, feel free to contact me directly.
Bob
Hi Bob
Please call me today about the selling price for this item. 949-300-6369
thanks
Doug
Bob, Thanks for clearing that up in my mind. I appreciate it.
Quote from: V63 on September 06, 2021, 04:57:21 PM
The bracket was part of the option and the body was fitted only if the option was selected. Only the pull down feature equipped vehicles will have this correct bracket.
The mechanical cable pull down was first offered in 1962