Technical Drum brake primary secondary

When they are actually FREEZE plugs

 

NOPE don't know where you came up with that bullshit but the shoe with the least lining or lower fricion coeficiant always is the primary and goes to the front and the shoe that has the longer or more lining or lining with a higher friction coeficiant is the secondary and always goes to the back.
Just as on a 4 barrel, Primary = smaller and in front, Secondary = larger and and to the rear.
I did brake jobs every day for a living for years often fixing one or two that some guy did at home on mondays after they brought the car to where I worked on Monday morning.

 

Yes they have a fixed adjustment pin on the bottom. The two shoes act independently and are not self energizing.

 

As an aside, please don't erase your incorrect comments once you are corrected. That's not only poor form but it also jacks up the context for future readers. Just own it and learn like everyone else.

So, typically, longer/bigger shoes on back(on OT cars and "other" makes) but not on the super common Ford Lockheed brakes. On any where the shoes are independently mounted at one end, larger is in front?
D

 

I have many motors, heater, wiper,pwr. seat, pwr. windows. I cringe when one of the unwashed calls an internal combustion engine a "motor" or refers to the entire vehicle as such. Probably comes from euro-trash influence. I thought freeze/frost or core plugs were designed to pop out when the early non-glycol antifreeze became weak through evaporation and cold temperatures froze the coolant.

 

Above I was prompted to look up the definition of a motor, I just put “motor” in the Google bar. First definition had me do a double-take.

 

No and no

 

https://engineering.mit.edu/engage/...the-difference-between-a-motor-and-an-engine/

"What’s the difference between a motor and an engine?
As with almost any word, it all depends how far you go back in time for your definition…"

 

Thanks! That's the photo I should have included with my original post if I'd had the time.

 

Good

 

Maybe next time it's better to remain silent and let everyone think you have no clue, then to open your mouth and remove all doubt.

 

What were we talking about again?

 

Sportsball.

 

abchopped I am 75yo when I first started doing brakes back in the 60s , the mechanic in the stationed taught me when doing brakes do one side at a time , that way you can walk around to other side to check your work. tom

 

The last drum brakes I did, I cheated, took cellphone pics, getting to the point I don’t want to walk back and forth around the car

 

Many times I have found the person who worked on the brakes before me did it wrong, so pictures help, but may not be correct. A Motors manual, or factory shop manual is a big help on these old cars. Some things may be done differently on our hobby cars, then on todays cars.

 

I second this. Typically if I am at odds with a post that has what I know is incorrect information, I will "quote" it, along with my version of what I know is correct.

That way, even if the original poster deletes or edits their post, the original is preserved in a quote.

 

Yes, I agree. I worked in a service station for several years and would run into this also the corrections of weekend mechanics.

 

Same thing only different.

 

Drum brakes aren’t hard once one realizes they aren’t all the same, there are different types.

 

When I worked at a dealership parts counter, a tech would occasionally get his back up because I'd get him the part he asked for instead of the part he actually needed.

More than once a tech would ask for an ignition switch and when I'd put the switch in his hand he say something like, "No, No! I need the switch where the key goes in!" So I'd go pull an ignition lock cylinder for him and lay it out on the counter for his approval. But I always made sure to ask him, "Well if this is the switch, where does the wiring plug in to it that activates the starter and ignition system?"

Of course it was no real surprise when a week later the same tech would come in and ask for an ignition lock cylinder when he really wanted the switch.

 

I actually used that trick this time, and I took a picture! I was just too dumb to notice a different in shoe lengths or widths haha. I’ve also realized that I’ve done many drum brakes in the past with no consideration to primary and secondary shoes. So naturally I’ve been quizzing every man I know if they are aware of primary and secondary brake shoes, it’s about a 50/50 split so far haha

 

I definitely have no intention of editing out my mistakes, I welcome all info I can get. You guys have tons of knowledge here and it’s truly appreciated you all take the time to help