Taper, out of roundness, and other defects.
Use the right tools and gauges.
In order to do a complete brake job, the drum should be resurfaced.
Scored drums are a major cause of noise and poor pedal action.
Scoring is often caused by dirt trapped in the drum, or by lining which has been worn down to the rivet heads.
Sometimes bonded linings are worn to the shoe rim, causing this kind of scoring.
New linings will make poor initial drum contact and give erratic brake action, unless the drums are resurfaced as part of a total brake job.
Take care when resurfacing a drum.
When metal is removed, the drum may be weakened, and its ability to absorb heat is reduced.
Some drums should never be resurfaced.
Hard spots in a drum appear as discolored patches.
Hard spots result from excessive heat, which is often caused by repeated and hard brake application.
These hard spots are actually a change in the chemistry of the metal, and cannot be removed.
Turning and grinding does not correct this condition.
Discard drums with hard spots.
We strongly recommend replacement of all rubber and brake hardware parts.
These are as important to a good brake job as quality linings.
Many fine brake relines have come back because an old part failed.
Don't risk time, money, and your reputation by reusing old parts.
Springs that have lost their tension often cause noise, extra wear, and pulling.
Don't risk it.
Before starting work on a disc brake, use penetrating oil on bleeder screws, which may be frozen by dirt or rust.
If the screw breaks, you may have to replace the caliper.
Disc brake rotors are scored by road dirt and by normal braking.
These rotors are too heavily scored and can't be reconditioned by machining.
Use a lathe to recondition rotors which are still serviceable.
Rust and contamination can be removed by hand sanding with abrasives.
Rotor hard spots are...
Hi, I'm Joe Slattery, and that little display you just saw was inspired by a recent happening in Videoland, a television commercial.
One of a batch of new ones we spread out all over the everloving watching machine.
And you wouldn't believe the way those ratings are checking out.
But new isn't the only word that's big up at AC.
Another word is now.
This is the era of now, the time of the big happening.
Man, if you ain't with what's happening, what's happening now? You're due for a quick ticket to has -been bill.
But kidding on the square though, these are mod times.
And whether or not it's the under 25 group that's running the world, we at AC aim to keep ahead of the action in every market across the country, youth or otherwise.
Big things are happening at AC.
Big happenings that are tuned to the tempo of the times.
And we want to lay a few of these happenings onto you to show you that AC is the brand to go with.
And after we're through here, you can call AC by any title you want.
The Mod brand, the Swingin' brand, the In brand, or the Now brand.
Just you remember to call AC for the products, the promotions, the progress, and the promise you're looking for.
To put more action in your sales and more money in your pockets.
And now, hold on to your hat and we'll show you why.
Music Sound of water and music Perhaps the biggest big happening among all AC products is something that's been happening all along.
The consistent peak standard, never flagging quality of the AC spark plug itself.
Here is where the AC spark plug division gets the major share of its top rated reputation.
Where the day in, year out AC performance story convinces and meets the acceptance of the great American motoring public.
Discounting all of the flamboyant competitive plays, it still remains factual and gospel that the AC spark plug product always was and still is America's number one plug.
Designed from the bottom up for all around maximum performance operation.
This is automotive engineering at its functional best.
Full time firepower for the greatest part of the driving public, the greatest part of the time.
That's what AC has worked to give American car owners and operators.
What we will continue to give them as long as we have the prime capability to do so.
One name, one brand, one standard of quality superiority.
This is what's happening in our AC spark plug division.
What will always happen on our designing tables, on our production line, in our testing facilities, out in the selling field.
There is nothing better that could happen to us and to you than today's AC spark plug.
The great one for the greatest part of today's automobile driving.
As well as for every other segment of the national spark plug market.
Everybody is pretty hip on the word quality and that works for whatever business you're in.
You use quite a lot of gas.
A service station operator prides himself on the quality gasoline he sells.
He's quick to impress his customers with the selling facts of this quality.
And they usually are impressed.
But do these same customers ever give an ounce of thought to the quality of the air they use? The average automobile engine uses 192 ,000 gallons of air a week.
Quality air? Air loaded with all sorts of dust, dirt, soot, and grit.
These particles can clog carburetors, cause stalling, power loss, low mileage.
They can even score cylinder walls.
One thing and only one thing can turn dust polluted air into quality air.
An efficient, hard -working, quality air filter.
An AC air filter.
This is the way, the AC way, to combat what are some of the engine's worst enemies.
Dust particles by the billions.
Some of them are so small even you guys with the 2020 eyes can't see them.
Others are so big and jagged you'd think it'd be easy to keep the rascals back from fouling up an engine.
Well up to now it was a pretty tough proposition, at least for most manufacturers.
But now something new has happened at AC.
A new invention by AC engineers called the Akron air filter with activated fibers.
To a car owner this means a revolution in engine protection.
Less engine wear, fewer overhauls, less power loss, less bearing wear.
What is this activated fibers deal? Well it means AC has gone and taken its exclusive Akron filter element material.
A material made of unique synthetic fibers and added certain special chemicals to it.
Now this does more for the filter than you ever figured possible.
First.
