Author Topic: 1940 lasalle vacuum lines  (Read 177 times)

Offline Ben Medlock

  • Posts: 60
1940 lasalle vacuum lines
« on: February 11, 2018, 11:47:10 AM »
Trying to figure out routing of vacuum lines for 1940 5019 Lasalle I've been restoring. See attached picture:

I'm pretty sure I remember the metal tubing going through the firewall on the drives side in the big grommet with the main wiring harness but no matter how I twist and turn it just doesn't seem to fit. As seen in the pic I also have a Tee connector and a straight connector that looks like it plugs into something and a switching valve. This car is NOT equipt with a vacuum antenna. So, here's my questions:

1- Does anyone have a picture of the vacuum line routing or can the just expalin it?
2- What is the switch for?
3- Is there something else powered by vacuum other than the wiper motor?
4- Different subject but...... There is no hole in the body for an exterior antenna and it does NOT have running boards so where the heck does the antenna go?

Any and all help and advise is appreciated.

Online USNTar

  • Posts: 32
  • Name: J. Isaacson
Re: 1940 lasalle vacuum lines
« Reply #1 on: February 11, 2018, 08:09:28 PM »
I've got a 39 and would have to double check,  but I'm not sure what the tubes are. The switch is definitely for the vacuum type antenna though.  Like you I have a weird bird in that mine has an aftermarket radio,  but no running boards or evidence that it ever had an external antenna. I have no idea what kind of antenna it would have had unless it was built into the radio box itself and I haven'tccracked it open to see.
Jon Isaacson
CLC #31060
1939 LaSalle 50-19

Offline Brad Ipsen CLC #737

  • Posts: 794
    • CLC Member
      CLC Member #737
Re: 1940 lasalle vacuum lines
« Reply #2 on: February 11, 2018, 08:33:12 PM »
In the middle of your picture the short straight section is what goes through the big rubber donut.  The tube below that in your picture is on the engine side of the firewall.  The clip on the tube on the top of the picture goes under one of the large headed screws that hold the firewall pad to the body.  See my picture showing the tube going through the rubber donut.  A hose connects that to the tube from the vacuum pump.  That hose and tube and wire loom is held to the firewall by a double clip that has a big loop for the loom and a smaller loop (all in one clip) for the vacuum tube. This is all info from 40-52 but I think the design is similar on 40-50. Vacuum antenna goes in the left cowl in the upper corner.
Brad Ipsen
1940 Cadillac 60S
1938 Cadillac 9039
1940 Cadillac 6267
1940 LaSalle 5227
1949 Cadillac 6237X

Offline Tom Boehm

  • Posts: 230
    • CLC Member
      CLC Member #6750
  • Name: Tom Boehm CLC #6750
Re: 1940 lasalle vacuum lines
« Reply #3 on: February 12, 2018, 05:44:31 AM »
Brad is that a valve cover I see in your picture?

Offline Brad Ipsen CLC #737

  • Posts: 794
    • CLC Member
      CLC Member #737
Re: 1940 lasalle vacuum lines
« Reply #4 on: February 12, 2018, 08:57:10 PM »
Modified class maybe??
Brad Ipsen
1940 Cadillac 60S
1938 Cadillac 9039
1940 Cadillac 6267
1940 LaSalle 5227
1949 Cadillac 6237X

Offline Tom Boehm

  • Posts: 230
    • CLC Member
      CLC Member #6750
  • Name: Tom Boehm CLC #6750
Re: 1940 lasalle vacuum lines
« Reply #5 on: February 13, 2018, 04:39:58 AM »
Hello Ben, Here are pictures of the vacuum tube and hose routing on my 1940 Lasalle 50 series. Like Brad said, the hose goes through a round M shaped holder attached just under the hole in the firewall, along with the wiring harness. (engine side of firewall). Note the tab on the same bolt as the oil filler tube. Some of the parts are put in place temporary for the picture. The rubber firewall grommet is not shown. Being as though you can't fine evidence of an antenna, are you sure your car had a radio originally? My car does not have a radio so the vacuum tube goes only to the wipers.
« Last Edit: February 13, 2018, 04:55:37 AM by Tom Boehm »

 

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