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Brake assembly Star Wheel Left vs Right

Posted: Tue May 13, 2025 4:43 am
by Phil Dally
Which side of the car does the left hand thread Star Wheel assembly belong in...Passenger or Driver?

It almost seems like the brake self adjusting feature is adjusting the brakes in the wrong direction!!

The picture is not a Corvair brakes but the finger is pointing at the exact part that I'm asking about.

Re: Brake assembly Star Wheel Left vs Right

Posted: Tue May 13, 2025 5:21 am
by gbullman
Easy way to figure it out. When the star wheel is going down (away from the backing plate) the adjuster needs to be expanding. Also the spring should not be touching the star wheel at all.

Just went through all of my self adjusters in the fall, they are finally working correctly, best brakes this car has had since I’ve owned it.

Re: Brake assembly Star Wheel Left vs Right

Posted: Tue May 13, 2025 5:23 am
by Wagon Master
Pull the cap off on the end next to the starwheel. They'll be marked L and R. To answer your question, the left hand thread one goes on the left, or drivers side.

Re: Brake assembly Star Wheel Left vs Right

Posted: Tue May 13, 2025 6:43 am
by Phil Dally
Okay we now have lift off.
They'll be marked L and R.
R & L letters were correct.
Also the spring should not be touching the star wheel at all.
Bottom spring that holds the shoes together in backwards.

Fully contacting the Star Wheel preventing it from turning.

Plus both little adjuster lever return springs were missing.

There are good pictures of both springs in 65 Shop Manual.

Now I'm going to take the rears apart and check them out.

I do believe these brakes will be ready for the autocross!!

Re: Brake assembly Star Wheel Left vs Right

Posted: Tue May 13, 2025 8:08 am
by jimbrandberg
I may have to disagree depending on how they're labeled. I just had to free some up last week so it should be fresh in my mind.
When you back up and apply the brakes the lever pushes down on the star wheel to expand the star wheel.
In the picture above I believe it is on the right side of the car. Backing up the wheel will be turning counter-clockwise. The lever engaging the star wheel will turn it clockwise. If you want it to expand when turning clockwise it has to be left hand thread.
So does L mean left side of the car or left hand thread?
Bonus point, the picture correctly has the short shoe forward.

Re: Brake assembly Star Wheel Left vs Right

Posted: Tue May 13, 2025 8:22 am
by Phil Dally
Good description of how the auto adjust system actually works Jim.

Re: Brake assembly Star Wheel Left vs Right

Posted: Tue May 13, 2025 9:04 am
by vairchet
In the original photo, spring is missing above adjuster. This is how it's supposed to be assembled (left side):
Left Rear Brake 01.jpg
Scans brought to you by an Artificial Entity without Intelligence
Scans brought to you by an Artificial Entity without Intelligence
Scanned photos are examples, not Corvair, but of a Chevelle.

Re: Brake assembly Star Wheel Left vs Right

Posted: Tue May 13, 2025 10:19 am
by 66vairguy
See picture of parts laid out for LM passenger rear side that might help a little

Re: Brake assembly Star Wheel Left vs Right

Posted: Tue May 13, 2025 3:21 pm
by Wagon Master
Sorry for the confusion. I misspoke. The L and R are marked as to position on the vehicle. The L or drivers side is conventional thread. The R or passenger side is lefthand thread.

Re: Brake assembly Star Wheel Left vs Right

Posted: Tue May 13, 2025 3:45 pm
by Phil Dally
Thank You to All.

I learned something today for sure...test drive manana.

Decided to do some yardwork & now I'm totally pooped.

Re: Brake assembly Star Wheel Left vs Right

Posted: Tue May 13, 2025 8:18 pm
by Frank DuVal
Right, Wagon, as one can see from the pictures above (all with star wheels) the right side of the car uses left hand threads to expand the adjuster when the start wheel is moved by the lever. And the left side adjuster is right hand threads. The L and R on the tip of the screw is the side of the car, just like the R on the lever in the very first photo, is for right side. :tu: :chevy: :tu:


Re: Brake assembly Star Wheel Left vs Right

Posted: Wed May 14, 2025 5:51 am
by jimbrandberg
I think they said the original photo above is not Corvair.
The subsequent photos by vairchet and 66vairguy are golden.
I like the information that L on the star wheel is left side of the car not left hand thread.

I've never understood the need for stating Drivers and Passenger instead of Left and Right. There's all those chaps in England and my mailman in a right hand drive Jeep. Sorry to judge but if you're standing at the front of the car wondering which side of the car is left you should probably just close the lid and call somebody.
Snagglepuss and exit stage left just came to mind. Now I can understand some confusion there so I'll just keep my seat.

When I remove brake springs I still lay them out directionally on the floor. It stems from when I didn't know what I was doing. At least now I question if they're correct, a lot can happen in 60 years.

Re: Brake assembly Star Wheel Left vs Right

Posted: Wed May 14, 2025 6:55 am
by Phil Dally
The picture is not a Corvair brake but the finger is pointing at the exact part that I'm asking about.

Re: Brake assembly Star Wheel Left vs Right

Posted: Wed May 14, 2025 7:01 am
by Wagon Master
It is/was my understanding that the left and right orientation on a vehicle is established as viewed from the drivers seat, in the driving position. That works for either left or right hand drive cars.

Re: Brake assembly Star Wheel Left vs Right

Posted: Wed May 14, 2025 7:38 am
by Frank DuVal
Right again, Wagon! :tu:

From the driver's perspective, not standing in front of the car. :chevy:

Yep, Phil, I recognize that Ford brake system, but the R on the lever means right, passenger, side of the car. And therefore that adjuster has left hand threads to get larger when the star wheel is turned by the lever. Actually a good picture since it addresses which side. :wave:

Oh, I see, the term passenger and driver's side does not work when you change driver position (how about that one off Corvair with the center driving position????). Stick with right and left....
:dogrun: :dogrun: :drinkinbuddy: :drinkinbuddy: :drinkinbuddy: :dogrun: :dogrun:

Re: Brake assembly Star Wheel Left vs Right

Posted: Wed May 14, 2025 9:08 am
by 66vairguy
jimbrandberg wrote: Wed May 14, 2025 5:51 am
I've never understood the need for stating Drivers and Passenger instead of Left and Right.
You are lucky --- fact is many folks confuse LEFT and RIGHT. A recent airliner accident (minor) was caused when the pilot moved the LEFT lever instead of the RIGHT lever --- this was a captain with 5,000 miles and a perfect record. Tech writers and ergonomic layout folks are keen to provide a difference.

My favorite is the U.K. RIGHT HAND DRIVE (but you drive on the LEFT side of the road) vs. most of the rest of the word that drives RIGHT HAND ROADS (steering wheel on LEFT).

That said in U.S.A the drivers side is on the LEFT and in the U.K. the drivers side is on the RIGHT ---- I'm so confused :rolling: :rolling: :rolling: :rolling: :rolling: :rolling:

Let's not get going on what is the FRONT of a Corvair engine ----- :banghead: :banghead: :banghead: