Brake System Flushing Tools - Page 3 - Mazda3 Forums : The #1 Mazda 3 Forum
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post #21 of 49 (permalink) Old 09-01-2018, 12:56 PM
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using cell phone double posted ops!

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post #22 of 49 (permalink) Old 09-01-2018, 12:57 PM
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I wonder how many of you debate with your Doctors,Dentist on your own health....



The caliper you mention is a GREAT example of one that was not being service for its operating environment and/or was isolated incident! ....You are correct about brake system not being 100% sealed. That is why brake fluid replacement and brake system periodic servicing at least checking moisture content is a must do!

The self adjusting rear brake shoes was a "feature" to make vehicles of the time look innovative to sell. A mechanical *engineer or defiantly a brake system designer (*like myself) or a historian of automotive history of mechanical designs would know that
To be clear if you are going to use what members on forum write at least use all the information, my wording I said that it would quote..."be easier and better method of adjusting the rear shoes on drum brakes systems" !
Furthermore...how many "owners" manuals describe the need for rear brake adjusting?

Now careful answering this one because there were actauly a few...but if you look them up you will understand why I am going to ... about what you find!

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post #23 of 49 (permalink) Old 09-01-2018, 05:29 PM
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VWandDodge,

That takes me back. I hope I'm not as old as your Dad, or I'll need to start calling you "sonny". My first several cars all had drums brakes, and my Dad told me to just drive in reverse and hit the brake pedal to adjust them after I replaced brake shoes. They always seemed to adjust nicely after just a couple of times...down the driveway of course!

These days I do prefer to work on calipers to replace pads. Glad to be done with drum brakes. I absolutely hated leaky rear wheel cylinders on my old Datsun roadsters (I had three of them!).
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post #24 of 49 (permalink) Old 09-01-2018, 05:41 PM Thread Starter
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VWandDodge,

That takes me back. I hope I'm not as old as your Dad, or I'll need to start calling you "sonny". My first several cars all had drums brakes, and my Dad told me to just drive in reverse and hit the brake pedal to adjust them after I replaced brake shoes. They always seemed to adjust nicely after just a couple of times...down the driveway of course!

These days I do prefer to work on calipers to replace pads. Glad to be done with drum brakes. I absolutely hated leaky rear wheel cylinders on my old Datsun roadsters (I had three of them!).
My first car to drive was a 1980 Plymouth Volaire with a slant-6, manual brakes (rear drums) and manual steering.

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post #25 of 49 (permalink) Old 09-13-2018, 12:36 PM
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So I got off my lazy rear and did a thorough review of the brake sections of both my Mazda 3 FSM and Ford Explorer (2011) FSM. I did a word search for "flush" and nothing came up in the brake sections even though the word Flush occurred like a hundred times throughout the few thousand pages of material.

I searched for "bleed" and saw this many times throughout the manuals with, of course, many instances in the brake section. I also paged through the brake sections looking at any part where brake fluid needed to be changed.

Nope, didn't see anything on flushing. The ABS sections didn't cover it either. Oh well.
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post #26 of 49 (permalink) Old 09-13-2018, 01:54 PM
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Look under R&R ABS system components.

If not found call a Dealer, ask for the service department and then ask the price difference between bleeding a brake system and a complete flushing and fluid replacement ABS equip vehicle.


There are some members that really know what we are talking about mainly because it is or was their trained profession in automotive repair, so debating or attempting to find fault with their responses when it concerns the "BRAKE" system on any given vehicle ....really????.... Maybe everyone should stop their cars The Flintstones way?

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post #27 of 49 (permalink) Old 09-13-2018, 03:10 PM
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OK, so what about this. For the sake of argument, say you do have a car with ABS, and you replace all of the fluid except for the small amount of what's left in the ABS reservoir. Who cares? You just got 90% of it. What little remains will eventually dilute out into the fresh stuff anyway. It's not like brake fluid can't last for years anyway.
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post #28 of 49 (permalink) Old 09-13-2018, 03:39 PM
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OK, so what about this. For the sake of argument, say you do have a car with ABS, and you replace all of the fluid except for the small amount of what's left in the ABS reservoir. Who cares? You just got 90% of it. What little remains will eventually dilute out into the fresh stuff anyway. It's not like brake fluid can't last for years anyway.
Until someone in the know actually explains what happens I'll just stick with this being good enough.
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post #29 of 49 (permalink) Old 09-13-2018, 04:45 PM
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Most ABC system do not circulate the brake fluid. So area's like the ABC controller and associated components unless you do a complete flushing the fluid will continue to age and collect contaminates like moisture and the effectiveness of the brake fluid deteriorates and will cause problems with the components in the ABS system and other hydraulic brake parts.

FYI...Factory Service Manuals for most platforms are worded for the "mechanic" in common terms.(i.e. alternators can be worded as generators,ECU and PCM and vice versa). The trained "mechanic" generally understands the difference between bleeding and flushing any fluids and more on topic to replace and service the brake fluid on a ABS equip vehicles. Most ALL Factory service Manuals with information about ABS will use predominantly use the word bleeding except in area's of warning or caution and then the word "FLUSH" may appear even if only for a single word ever used in the complete chapter having to do with ABC brakes systems.

Generally Factory Service Manuals were once only available to the dealers.
Information less known....the written material is many times sent to a publishing house in a foreign language from the engineering departments that set the service procedures. These publishers will use none mechanically or automotive technical employee's to translate the information into English (or other languages generally after the already English translation was done ) using more common language words so both the specialty factory trained auto technicians and mechanics as well none factory trained mechanics and Auto Technicians like ASE can understand the basic language information commonly used for servicing procedures. Professional auto service technicians and mechanic's know the difference and understanding the true meaning of commonly mis-used words on forums such as "bleeding" and "flushing".
I was going to post SEVERAL warning/cautions in randomly grabbed off my shelf official Factory Service Manuals that one or two only mention the word Flushing once just to satisfy a member or 2 with their good effort looking partial information up for themselves. But really it is still pointless unless you first understand everything I just pointed out about the way FSM are meant to be used and who is really suppose to use them in the first place? I mean we can all get how to be a Doctor and self learn, but who wants them to do heart surgery on you from that same Doctor? Us guys are funny, if it is a car we all were born knowing everything about them and how to work on them. I have customers filling the appointment books weekly that feel that way when they bring their car into the shop to get service work done. Or many times redo something they tried to fix the DYI their way. LOL

Math question....

If I have 1.5 quarts of brake fluid that will represent the total amount in a hypothetical ABS complete brake system and there is an accumulated 1/6 OZ of water in the system. What is the percentage of water in brake fluid?
Hint...it is a trick question!

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post #30 of 49 (permalink) Old 09-14-2018, 02:35 AM
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Math question....

If I have 1.5 quarts of brake fluid that will represent the total amount in a hypothetical ABS complete brake system and there is an accumulated 1/6 OZ of water in the system. What is the percentage of water in brake fluid?
Hint...it is a trick question!
whats that in metric?
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