Russell Winje

Some good thoughts. I will keep my ears perked. The started was a possible when it happened, but it worked fine before and after. Still, I will keep an eye of everything.

Thanks for all the thoughts, I'll watch what I eat before I drive..... No heater there, very clean old car, top to bottom. As a note, the car continued after coming to a stop with the motor off, for about 20 seconds, then "clunk" and it stopped. From there it was normal again, and if possible, even more quite than it has been, which has been ever more quite since I started bringing it back to life.

Not sure where to even start. Took the 1949 Chrysler New Yorker out for a fine ride to town today. Ran like a champ. Strong running, **** right, great brakes. Drove into a friends driveway and in a turn I thought I had ran over a rock or pine cone and a thunk sound was followed by a whirling, buzzing sound centered under my seat. I didn't think much about it a the time, shut the car off and went in for a visit. About 20 minutes latter I came out and started the car, the whirling started again and in a few yards I shut the motor off and coasted to a stop. The whirling kept going with the motor off, the car stopped, like a rubber band unwinding. Then a clunk, thud and it was gone. Motor started, ran great, shift perfect, brakes great. And the car was the quietest since I started working on it nearly a year ago. There had always been a bit of noise I always attributed to age. That was gone. One the 20 miles home it ran perfect, and quiet. I have methodically drained and changed, with correct oils, the transmission oil and rear end oil. The vacuum brakes work great. The mystery is how it could make the sound of movement with the car stopped and the motor off. Checked that the starter hadn't engaged, and it was normal, fine. Ever had this happen to you? Thanks

It would seem that this is a Bendix Brake Booster, like used by Studebaker and Cadillac and others in that time period.

I will get under there and see if I can find a Model number.

Here are some pictures of the vacuum assist unit in my 46C. Its build card puts it out the door in May of 1949 in Pasadena, CA, VIN # 7099948. Note the picture with the two blocks used to send outgoing brake lines to wheel cylinders and mysterious line (with rubber hose over line for protection I guess).

Thanks for that picture. I will get a closer look at things and see which one I have. Note the block to the left that reads "brake fluid lines to wheel cylinders". That is where this mysterious line comes from.

Thanks, That's how I see it also. The block junction the lines all come together at, to the rear of the vacuum assist looked factory, but the purpose of the extra line didn't make any sense. I had dismissed it when I first looked under the hood because it was capped off. Because I replaced the vacuum advance diaphragm, and the extra line was laying right there, I had some questions, but because the vacuum line to the distributor was there and good I just hooked it up and left the unidentified line for latter. Well, it came to be latter when I was cleaning up the mess of wires yesterday, so once again I had to wonder. There just is no need for a brake line to the motor compartment. It is too short to go anywhere else, such as the front brake lines. Also, the front brake lines are in place and original, and of course, after the brake job, do work. Mystery.

Extra pictures. On top of the oil filler cap you can see the terminated end of the line. Two pictures show the line going past the battery disconnect switch and down. One pictures show the line going past the body to frame connection where it sneaks along the frame with the rubber hose protector.

Note, that rats nest of wires is being cleaned up, and that is why the mystery line has come back to my attention. Just part of the mess being cleaned up under the hood.

The picture with the distributor shows the line poking toward the vacuum diaphragm, which it does not connect too, just hanging in the air, capped off in a funky non factory block. The second picture shows it snaking up the inner fender well and past a terminal block. Where it goes back from there toward the master cylinder/vacuum assist, it is along side the frame and in a protective rubber hose and goes into a metal junction block that has a line from the vacuum assist and out to the front and rear brakes, and this mysterious line. All those lines would appear to be factory, not add on. There is not a trailer tow ball/tow package.

While in the process of cleaning up wiring under the hood I found a solid steel line that was disconnected and laying near the distributor vacuum lines. Someone had capped it off years ago. Tracing it back I ended up down stream from the vacuum brake assist unit where the supply from the assist split off for the front and read brakes. With both the front and rear brakes supplied with fluid from the assist unit, there seems to be no purpose for the plugged off line that ends in the motor compartment. I terminated in a standard type flare nut which someone capped. Any clues as to what the purpose was for this mysterious line? Thanks

With the improved weather, got the 1949 Chrysler out for a spin and a bit of youtube filming. Thought I would share it with you after all the assistance from this group. Again, thank you for your help over the months. https://youtu.be/pXzQ0n2iq_Q

Taking advantage of a snowy week on the farm I got the brake shoes/wheel cylinders/hoses/springs replaced front and rear with cleanup as I went along. A break in the weather, and a road test. All good to go. Thanks again for all the input

Good input. I will be checking these various things as I progress. Did change diff oil and pinion seal last fall. The Booster system is in place and will be checked.

I will check the King Pins, good advice. The brake parts are in a master kit; new cylinders, including master, springs, clips, hoses, shoes. Just waiting for the ice sheet to melt at the back bay so I can back out safely to move to the front bay.

Thanks, I will check that out today.

Just got a full kit to rebuild the brakes on my 49 New Yorker. When the weather allows I will pull the car into the shop and get started. Clean up and inspection will start the work. Any clues that I can use? Thanks.

Thanks, I will check that out

the 1958, 21st edition of "Motor's Auto Repair Manual", Page 478 and 479 explain nicely the M-6 transmission nicely. With this knowledge pictured and explained I feel confident with my further understanding, and thanks to all the input from you folks.

Good plan, thanks

Because of the cold weather here in the high desert mountains of the Pacific North West everything mechanical moves slower. In the summer I spray lubed the shifting connections figuring that would loosing up the ole girl after years of setting. Now with a sluggish lever I wonder if there is some hidden place to lubricate the shifting system that you know about. Thanks for the ideas.

That method will test my mental way of looking at the driving world. I'll try it. Thanks.

OK, this also makes a lot of sense. Thanks.

I like the "stately driving" idea. I will try looking smug while driving, unless I'm stuck on a RR crossing. Thanks.